Contents
- The climate of Denver, CO
- The best time to visit Denver, CO
- The worst time to visit Denver, CO
- Weather hazards
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The colorful sky above the sunlit Denver city, Colorado in autumn
The climate of Denver, CO
Denver has a semi-arid, continental type of climate (Köppen climate classification BSk) with hot summers and cold winters. Denver, the capital of Colorado, lies in the South Platte River Valley, east of the foothills of the Rocky Mountains. The nearby mountain areas influence the climate and produce microclimates of subtropical and humid continental nature in the adjacent regions of Denver.
Denver, the High Mile City, stands on the High Plains at an average elevation of one mile above sea level and consists of open areas in the city's center, while hills surround the west, north, and south regions. The difference between the daily high and low temperatures is extreme due to high elevation and aridness. Sunshine is plenty and registers almost 3100 hours over the year. Denver is a dry area with humidity rarely going above 57% at any time of the year.
Summers are hot and the high temperatures in the peak of July register above 90°F (32.2°C) for many days, some of which even touch 100°F (37.8°C). Annual precipitation is low to the tune of 14" (356mm), with 70% occurring during the summer.
Winters are cold with plenty of snow; snowfall registers to 54" (1372mm) in Denver, usually from October to April. December has the lowest temperatures during the year that average 17°F (-8.3°C) but a few nights may quickly plummet below -10°F (-23.3°C). Winter days average 42°F (5.6°C), but occasional cold fronts may see them go below 32°F (0°C) and even close to 0°F (-17.8°C). Chinook winds bring warmness during the winter. Tornadoes occur on the eastern side of Denver during spring and summer.
Denver, the High Mile City, stands on the High Plains at an average elevation of one mile above sea level and consists of open areas in the city's center, while hills surround the west, north, and south regions. The difference between the daily high and low temperatures is extreme due to high elevation and aridness. Sunshine is plenty and registers almost 3100 hours over the year. Denver is a dry area with humidity rarely going above 57% at any time of the year.
Summers are hot and the high temperatures in the peak of July register above 90°F (32.2°C) for many days, some of which even touch 100°F (37.8°C). Annual precipitation is low to the tune of 14" (356mm), with 70% occurring during the summer.
Winters are cold with plenty of snow; snowfall registers to 54" (1372mm) in Denver, usually from October to April. December has the lowest temperatures during the year that average 17°F (-8.3°C) but a few nights may quickly plummet below -10°F (-23.3°C). Winter days average 42°F (5.6°C), but occasional cold fronts may see them go below 32°F (0°C) and even close to 0°F (-17.8°C). Chinook winds bring warmness during the winter. Tornadoes occur on the eastern side of Denver during spring and summer.
The best time to visit Denver, CO
April and May in spring and September and October in autumn are the best times to visit Denver with comfortable temperatures - the daily highs are warm 60°F (15.6°C) to 78°F (25.6°C), while the nightly lows are between 34°F (1.1°C) to 48°F (8.9°C).
The summer season is hot, while the winters are cold. Summer attracts tourists in large numbers and competition for campsites along the popular trails. Thunderstorms and tornadoes also invade Denver during the summer.
The summer season is hot, while the winters are cold. Summer attracts tourists in large numbers and competition for campsites along the popular trails. Thunderstorms and tornadoes also invade Denver during the summer.
The worst time to visit Denver, CO
November to February is the worst time to visit Denver, as the winter is severe with heavy snow accumulation.
The plains bear the grunt of the chilly gusts of wind in the cold season. Frost is a regular guest even though the days rarely lack sunshine. Freezing nights are not a welcome proposal to the tourists, even though a few visitors endure them in the hope of the open ski season on the mountain slopes. Winter has discounted rates the majority of the time due to the inclement weather.
The plains bear the grunt of the chilly gusts of wind in the cold season. Frost is a regular guest even though the days rarely lack sunshine. Freezing nights are not a welcome proposal to the tourists, even though a few visitors endure them in the hope of the open ski season on the mountain slopes. Winter has discounted rates the majority of the time due to the inclement weather.
Weather hazards
Denver is prone to wildfires, thunderstorms, tornadoes, and hailstorms during summer and snowstorms during the winter. The scorching heat makes the area susceptible to wildfires such as the Hayman Fire of 2002. Thunderstorms with lightning are frequent during the summer, especially in the surrounding high mountainous regions, while tornadoes strike mostly the areas near the eastern suburbs of Denver. Blizzards are occasional in the rough winter weather, deposit large amounts of snow that poses difficulty for vehicular movement, and generally, stall daily life.
Weather in January
January, like December, in Denver, Colorado, is another cold winter month, with temperature in the range of an average high of 40.5°F (4.7°C) and an average low of 21.6°F (-5.8°C). In Denver, Colorado, the average high-temperature in January is essentially the same as in December - a still wintry 40.5°F (4.7°C). Weather in January »
Weather in February
February, the last month of the winter in Denver, is also a wintry month, with an average temperature fluctuating between 20.8°F (-6.2°C) and 40.5°F (4.7°C). In February, the average high-temperature remains the same as in January - a still wintry 40.5°F (4.7°C). Weather in February »
Weather in March
March, the first month of the spring in Denver, is a fresh month, with an average temperature varying between 51.4°F (10.8°C) and 29.7°F (-1.3°C). In Denver, the average high-temperature in March increases from a wintry 40.5°F (4.7°C) in February to a cool 51.4°F (10.8°C). Weather in March »
Weather in April
April in Denver, Colorado, is a mild spring month, with an average temperature ranging between max 57.2°F (14°C) and min 34.3°F (1.3°C). In April, the average high-temperature slightly increases from a cool 51.4°F (10.8°C) in March to a mild 57.2°F (14°C). Weather in April »
Weather in May
May, the last month of the spring in Denver, is a comfortable month, with an average temperature fluctuating between 65.8°F (18.8°C) and 42.4°F (5.8°C). In May, the average high-temperature slightly increases from a mild 57.2°F (14°C) in April to a comfortable 65.8°F (18.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Denver, Colorado, with an average temperature fluctuating between 81°F (27.2°C) and 54.5°F (12.5°C). In June, the average high-temperature soars, from an enjoyable 65.8°F (18.8°C) in May, to a warm 81°F (27.2°C). Weather in June »
Weather in July
July, like June, in Denver, Colorado, is a moderately hot summer month, with temperature in the range of an average high of 84.4°F (29.1°C) and an average low of 59.2°F (15.1°C). The warmest month is July, with an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 59.2°F (15.1°C). The average heat index in July is calculated to be 84.2°F (29°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Denver, Colorado, with an average temperature fluctuating between 83.1°F (28.4°C) and 58.3°F (14.6°C). In Denver, the average high-temperature in August is almost the same as in July - a still moderately hot 83.1°F (28.4°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Denver, Colorado, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 51.4°F (10.8°C). In Denver, the average high-temperature in September marginally drops from 83.1°F (28.4°C) in August to a still warm 76.6°F (24.8°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Denver, Colorado, with an average temperature ranging between min 38.3°F (3.5°C) and max 61.3°F (16.3°C). In October, the average high-temperature plummets from a moderately hot 76.6°F (24.8°C) in September to an enjoyable 61.3°F (16.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Denver, Colorado, with temperature in the range of an average high of 50.7°F (10.4°C) and an average low of 29.1°F (-1.6°C). In Denver, the average high-temperature in November drops from an enjoyable 61.3°F (16.3°C) in October to a fresh 50.7°F (10.4°C). Weather in November »
Weather in December
December, the first month of the winter in Denver, is also a wintry month, with an average temperature fluctuating between 39.9°F (4.4°C) and 20.7°F (-6.3°C). The coldest month is December, with an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 20.7°F (-6.3°C). Weather in December »
[Resources]FAQ
What is the driest month in Denver?
January and December are months with the least rain in Denver, Colorado, when the rain falls for 3.7 days and typically aggregates up to 0.39" (10mm) of rain.
How much does it rain in Denver?
In Denver, Colorado, during the entire year, the rain falls for 119.5 days and collects up to 12.95" (329mm) of precipitation.
When does it snow in Denver?
Months with snowfall in Denver, Colorado, are January through May, October through December.
How many days does it snow in Denver?
Throughout the year, in Denver, there are 43.5 snowfall days, and 35.67" (906mm) of snow is accumulated.
When is the lowest UV index in Denver?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the most humid month in Denver?
February is the most humid month in Denver, Colorado, with an average relative humidity of 66%.
What is the month with the least sunshine in Denver?
The month with the least sunshine is February, with an average of 6.9h of sunshine.
What is the snowiest month in Denver?
The month with the most snowfall is March, when snow falls for 6.7 days and typically aggregates up to 6.26" (159mm) of snow.
When is Daylight Saving Time (DST) in Denver?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Denver, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from MDT to MST.
What is the rainiest month in Denver?
The month with the most rainfall in Denver, Colorado, is May, when the rain falls for 18.2 days and typically aggregates up to 2.36" (60mm) of precipitation.
What is the least humid month in Denver?
The least humid month in Denver is June, with an average relative humidity of 41%.
When it does not snow in Denver?
In Denver, snow does not fall in June through September.
When are the longest days in Denver?
The month with the longest days is June, with an average of 14h and 56min of daylight.
What are the months with the most sunshine in Denver?
The months with the most sunshine in Denver, Colorado, are June through August, with an average of 11.8h of sunshine.
When is the highest UV index in Denver?
June and July, with an average maximum UV index of 6, are months with the highest UV index in Denver.
What is the warmest month in Denver?
July is the warmest month in Denver, Colorado, with an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 59.2°F (15.1°C).
What is the coldest month in Denver?
With an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 20.7°F (-6.3°C), December is the coldest month in Denver, Colorado.
What is the month with the shortest days in Denver?
With an average of 9h and 25min of daylight, December has the shortest days of the year in Denver, Colorado.
Average temperature
Denver, CO
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (39.9°F).
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure
Denver, CO
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).
Average wind speed
Denver, CO
- Average wind speed in January:
6.2mph - Average wind speed in February:
6.2mph - Average wind speed in March:
6.5mph - Average wind speed in April:
6.6mph - Average wind speed in May:
5.9mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.7mph - Average wind speed in September:
5.7mph - Average wind speed in October:
5.8mph - Average wind speed in November:
6mph - Average wind speed in December:
5.8mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.7mph).
Average humidity
Denver, CO
The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is June (41%).
Average rainfall
Denver, CO
- Average rainfall in January:
0.39" - Average rainfall in February:
0.75" - Average rainfall in March:
1.26" - Average rainfall in April:
1.42" - Average rainfall in May:
2.36" - Average rainfall in June:
1.34"
- Average rainfall in July:
1.85" - Average rainfall in August:
1.1" - Average rainfall in September:
0.71" - Average rainfall in October:
0.79" - Average rainfall in November:
0.59" - Average rainfall in December:
0.39"
The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days
Denver, CO
- Average rainfall days in January:
3.7 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
13.9 days
- Average rainfall days in July:
18.4 days - Average rainfall days in August:
15.1 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
6.1 days - Average rainfall days in November:
4.4 days - Average rainfall days in December:
4.3 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (3.7 days).
Average snowfall
Denver, CO
- Average snowfall in January:
3.03" - Average snowfall in February:
5.94" - Average snowfall in March:
6.26" - Average snowfall in April:
6.22" - Average snowfall in May:
2.72" - Average snowfall in June:
0"
The month with the highest snowfall is March (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Denver, CO
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
6.7 days - Average snowfall days in April:
4.8 days - Average snowfall days in May:
1.8 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.1 days - Average snowfall days in October:
2.8 days - Average snowfall days in November:
4.7 days - Average snowfall days in December:
7 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Denver, CO
- Average daylight in January:
9h and 44min - Average daylight in February:
10h and 44min - Average daylight in March:
11h and 59min - Average daylight in April:
13h and 17min - Average daylight in May:
14h and 23min - Average daylight in June:
14h and 56min
- Average daylight in July:
14h and 39min - Average daylight in August:
13h and 41min - Average daylight in September:
12h and 26min - Average daylight in October:
11h and 8min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 25min
The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).
- Average sunshine in January:
7h and 6min - Average sunshine in February:
6h and 54min - Average sunshine in March:
9h and 6min - Average sunshine in April:
10h and 48min - Average sunshine in May:
11h and 12min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 48min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 24min - Average sunshine in November:
7h and 18min - Average sunshine in December:
7h and 6min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).
Average sunshine days
Denver, CO
- Average sunshine days in January:
22.7 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
16.6 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
9.1 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
5.6 days - Average sunshine days in August:
8.8 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
20.7 days - Average sunshine days in November:
23 days - Average sunshine days in December:
22.4 days
The month with the most sunshine days is November (23 days).
The month with the least sunshine days is July (5.6 days).
Average UV index
Denver, CO
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Denver, CO
The month with the most cloud cover is April (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility
Denver, CO
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
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