Climate and monthly weather forecastDerby, CO
Climate and monthly weather forecast
Weather in January
January, like December, in Derby, Colorado, is a wintry winter month, with an average temperature varying between 23.2°F (-4.9°C) and 42.4°F (5.8°C). January's advent presents an average high-temperature of a still icy 42.4°F (5.8°C), indicating a slight variation from the conditions of the previous month. Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Derby, Colorado, with an average temperature varying between 42.4°F (5.8°C) and 22.5°F (-5.3°C). The commencement of February records an average high-temperature of a still wintry 42.4°F (5.8°C), identical to January. Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Derby, Colorado, with an average temperature fluctuating between 31.5°F (-0.3°C) and 54.1°F (12.3°C). March signals a shift in the average high-temperature, moving from February's cold 42.4°F (5.8°C) to a fresh 54.1°F (12.3°C). Weather in March »Weather in April
April in Derby, Colorado, is a mild spring month, with temperature in the range of an average low of 36.1°F (2.3°C) and an average high of 60.3°F (15.7°C). The shift from March to April introduces a subtle increase in the average high-temperature, moving from a cool 54.1°F (12.3°C) to a moderate 60.3°F (15.7°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Derby, Colorado, with an average temperature varying between 44.4°F (6.9°C) and 69.1°F (20.6°C). The shift into May is characterized by a subtle rise in the average high-temperature, transitioning from April's refreshing 60.3°F (15.7°C) to an agreeable 69.1°F (20.6°C). Weather in May »Weather in June
June, the first month of the summer in Derby, is a moderately hot month, with an average temperature ranging between min 56.5°F (13.6°C) and max 84.2°F (29°C). Derby in June experiences a marked increase in the average high-temperature, ascending from May's agreeable 69.1°F (20.6°C) to a moderately hot 84.2°F (29°C). Weather in June »Weather in July
July in Derby, Colorado, is a tropical summer month, with an average temperature varying between 61.7°F (16.5°C) and 88.3°F (31.3°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 88.3°F (31.3°C) and a low of 61.7°F (16.5°C). The heat index for July is evaluated at a hot 89.6°F (32°C). Weather in July »Weather in August
August, the last month of the summer in Derby, is also a hot month, with an average temperature ranging between min 60.3°F (15.7°C) and max 87.1°F (30.6°C). August reports an average high-temperature of a still hot 87.1°F (30.6°C), slightly varied from July's 88.3°F (31.3°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Derby, Colorado, with an average temperature varying between 53.8°F (12.1°C) and 79.5°F (26.4°C). The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a tropical 87.1°F (30.6°C) in August to a warm 79.5°F (26.4°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Derby, Colorado, with temperature in the range of an average low of 40.1°F (4.5°C) and an average high of 63.3°F (17.4°C). A notable decrease in the average high-temperature is observed during October, falling from a warm 79.5°F (26.4°C) in September to a refreshing 63.3°F (17.4°C). Weather in October »Weather in November
November, the last month of the autumn in Derby, is also a fresh month, with an average temperature varying between 30.6°F (-0.8°C) and 52.7°F (11.5°C). The shift to November brings a decrease in the average high-temperature, falling from an enjoyable 63.3°F (17.4°C) in October to a cool 52.7°F (11.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Derby, Colorado, with an average temperature varying between 21.9°F (-5.6°C) and 41.2°F (5.1°C). Derby's coldest month, December, registers temperatures that range from a high of 41.2°F (5.1°C) to a low of 21.9°F (-5.6°C). Weather in December »Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the least rainfall are January and December Rain falls for 2.3 days and accumulates 0.08" (2mm) of rain.
In Derby, during the entire year, the rain falls for 48.3 days and collects up to 3.19" (81mm) of precipitation.
January through May, October through December are months with snowfall.
Throughout the year, there are 19.6 snowfall days, and 8.5" (216mm) of snow is accumulated.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
The most humid month is February, with an average relative humidity of 64%.
With an average of 6.7h of sunshine, February has the least sunshine of the year.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
In Derby, snow does not fall in June through September.
With an average of 15h and 0min of daylight, June has the longest days of the year.
The months with the most sunshine are June and July, with an average of 11.9h of sunshine.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
Derby witnesses the warmest weather in July, with temperatures averaging a high of 88.3°F (31.3°C) and a low of 61.7°F (16.5°C).
July is the month with the most rainfall. Rain falls for 8.2 days and accumulates 0.59" (15mm) of precipitation.
August is the least humid month in Derby, with an average relative humidity of 39%.
The month with the most snowfall is October, when snow falls for 1.7 days and typically aggregates up to 1.42" (36mm) of snow.
Derby's December weather reaches an average high of 41.2°F (5.1°C) and an average low of 21.9°F (-5.6°C), making it the coldest month.
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Derby, CO
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (41.2°F).
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure
Derby, CO
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30"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 months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed
Derby, CO
- Average wind speed in January:
6.1mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.7mph - Average wind speed in April:
6.9mph - Average wind speed in May:
6.3mph - Average wind speed in June:
6.5mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity
Derby, CO
The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (39%).
Average rainfall
Derby, CO
- Average rainfall in January:
0.08" - Average rainfall in February:
0.16" - Average rainfall in March:
0.31" - Average rainfall in April:
0.24" - Average rainfall in May:
0.55" - Average rainfall in June:
0.35"
- Average rainfall in July:
0.59" - Average rainfall in August:
0.24" - Average rainfall in September:
0.16" - Average rainfall in October:
0.24" - Average rainfall in November:
0.2" - Average rainfall in December:
0.08"
The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").
Average rainfall days
Derby, CO
- Average rainfall days in January:
2.3 days - Average rainfall days in February:
1.2 days - Average rainfall days in March:
4.7 days - Average rainfall days in April:
5.3 days - Average rainfall days in May:
6.2 days - Average rainfall days in June:
5.7 days
- Average rainfall days in July:
8.2 days - Average rainfall days in August:
5.3 days - Average rainfall days in September:
3.3 days - Average rainfall days in October:
2.3 days - Average rainfall days in November:
2.1 days - Average rainfall days in December:
1.7 days
The month with the highest number of rainy days is July (8.2 days).
The month with the least rainy days is February (1.2 days).
Average snowfall
Derby, CO
- Average snowfall in January:
0.71" - Average snowfall in February:
1.22" - Average snowfall in March:
1.1" - Average snowfall in April:
0.91" - Average snowfall in May:
1.26" - Average snowfall in June:
0"
The month with the highest snowfall is October (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Derby, CO
- Average snowfall days in January:
3.2 days - Average snowfall days in February:
4.7 days - Average snowfall days in March:
2.8 days - Average snowfall days in April:
2.1 days - Average snowfall days in May:
0.8 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 days - Average snowfall days in October:
1.7 days - Average snowfall days in November:
2.3 days - Average snowfall days in December:
2 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Derby, CO
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
7h and 0min - Average sunshine in February:
6h and 42min - Average sunshine in March:
9h and 6min - Average sunshine in April:
10h and 54min - Average sunshine in May:
11h and 18min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
11h and 48min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 30min - Average sunshine in November:
7h and 12min - Average sunshine in December:
7h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days
Derby, CO
- Average sunshine days in January:
27.4 days - Average sunshine days in February:
23.2 days - Average sunshine days in March:
25.3 days - Average sunshine days in April:
22.8 days - Average sunshine days in May:
21.9 days - Average sunshine days in June:
20.1 days
- Average sunshine days in July:
19.6 days - Average sunshine days in August:
22.3 days - Average sunshine days in September:
24.5 days - Average sunshine days in October:
26.7 days - Average sunshine days in November:
26.5 days - Average sunshine days in December:
28.5 days
The month with the most sunshine days is December (28.5 days).
The month with the least sunshine days is July (19.6 days).
Average UV index
Derby, CO
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Derby, CO
The months with the most cloud cover are February, April and May (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility
Derby, 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).
