Climate and monthly weather forecastFort Lyon, CO
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Fort Lyon, Colorado, with temperature in the range of an average low of 27°F (-2.8°C) and an average high of 45.1°F (7.3°C). Fort Lyon experiences an average high-temperature of a still frosty 45.1°F (7.3°C) in January, subtly different from December's 43.7°F (6.5°C). Weather in January »Weather in February
February, the last month of the winter in Fort Lyon, is another chilly month, with temperature in the range of an average high of 47.8°F (8.8°C) and an average low of 28.8°F (-1.8°C). An average high-temperature of a still frosty 47.8°F (8.8°C) marks February, exhibiting a close resemblance to the conditions in January. Weather in February »Weather in March
March, the first month of the spring in Fort Lyon, is a refreshing month, with an average temperature varying between 60.4°F (15.8°C) and 39.2°F (4°C). The transition to March introduces an increase in the average high-temperature, shifting from a chilly 47.8°F (8.8°C) in February to a moderate 60.4°F (15.8°C). Weather in March »Weather in April
April is a comfortable spring month in Fort Lyon, Colorado, with an average temperature fluctuating between 45.1°F (7.3°C) and 67.3°F (19.6°C). In Fort Lyon, the average high-temperature in April slightly rises, from a mild 60.4°F (15.8°C) in March, to a still refreshing 67.3°F (19.6°C). Weather in April »Weather in May
May, the last month of the spring in Fort Lyon, is a warm month, with an average temperature fluctuating between 53.6°F (12°C) and 76.5°F (24.7°C). The average high-temperature increases in May, moving from a comfortable 67.3°F (19.6°C) in April to a moderately hot 76.5°F (24.7°C). Weather in May »Weather in June
June, the first month of the summer in Fort Lyon, is a hot month, with an average temperature varying between 90.1°F (32.3°C) and 66.2°F (19°C). With the onset of June, Fort Lyon's weather sees a temperature rise, transitioning from a warm 76.5°F (24.7°C) in May to a hot 90.1°F (32.3°C). Weather in June »Weather in July
July, like June, is another hot summer month in Fort Lyon, Colorado, with an average temperature fluctuating between 92.8°F (33.8°C) and 70.9°F (21.6°C). July is the month when Fort Lyon experiences its warmest temperatures, averaging a high of 92.8°F (33.8°C) and a low of 70.9°F (21.6°C). July's mean heat index is computed to be a very hot 96.8°F (36°C). Weather in July »Weather in August
The last month of the summer, August, is another hot month in Fort Lyon, Colorado, with an average temperature varying between 90.1°F (32.3°C) and 68.5°F (20.3°C). Welcoming August, Fort Lyon notes an average high-temperature of a still tropical 90.1°F (32.3°C), nearly consistent with July's 92.8°F (33.8°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Fort Lyon, Colorado, with an average temperature varying between 61.9°F (16.6°C) and 83.5°F (28.6°C). In the transition to September, Fort Lyon observes a minor drop in the average high-temperature, shifting from a tropical 90.1°F (32.3°C) in August to a warm 83.5°F (28.6°C). Weather in September »Weather in October
October, like September, in Fort Lyon, Colorado, is another comfortable autumn month, with an average temperature fluctuating between 47.1°F (8.4°C) and 67.6°F (19.8°C). In Fort Lyon, the average high-temperature in October significantly decreases from a moderately hot 83.5°F (28.6°C) in September to a comfortable 67.6°F (19.8°C). Weather in October »Weather in November
November, the last month of the autumn in Fort Lyon, is another refreshing month, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 55.8°F (13.2°C). The average high-temperature decreases in November, shifting from an enjoyable 67.6°F (19.8°C) in October to a still refreshing 55.8°F (13.2°C). Weather in November »Weather in December
December, the first month of the winter in Fort Lyon, is still a chilly month, with an average temperature varying between 43.7°F (6.5°C) and 26.6°F (-3°C). Fort Lyon notes the coldest temperatures in December, with a high average of 43.7°F (6.5°C) and a low of 26.6°F (-3°C). Weather in December »Updated: Jul 1, 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
With an average relative humidity of 58%, January is the most humid month.
January, November and December are months with the least rain in Fort Lyon when the rain falls for 3.3 days and typically aggregates up to 0.35" (9mm) of rain.
Throughout the year, there are 89.9 rainfall days, and 10.2" (259mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
In Fort Lyon, during the entire year, snow falls for 23.2 days and aggregates up to 10.28" (261mm) of snow.
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 5.2 days and typically aggregates up to 2.17" (55mm) of snow.
With an average of 6.7h of sunshine, February has the least sunshine of the year in Fort Lyon, Colorado.
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.
The least humid month is June, with an average relative humidity of 38%.
June through September are months without snowfall.
The month with the longest days is June, with an average of 14h and 48min of daylight.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
The warmest month is July, with an average high-temperature of 92.8°F (33.8°C) and an average low-temperature of 70.9°F (21.6°C).
July is the month with the most rainfall. Rain falls for 13.8 days and accumulates 1.81" (46mm) of precipitation.
July has the most sunshine of the year, with an average of 11.9h of sunshine.
December tends to be the coldest month, with temperatures averaging a daily high of 43.7°F (6.5°C) and a low of 26.6°F (-3°C).
December has the shortest days of the year, with an average of 9h and 36min of daylight.
Average temperature
Fort Lyon, CO
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (43.7°F).
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is December (26.6°F).
Average pressure
Fort Lyon, CO
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
29.94"Hg - Average pressure in April:
29.85"Hg - Average pressure in May:
29.85"Hg - Average pressure in June:
29.82"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.94"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed
Fort Lyon, CO
- Average wind speed in January:
8.2mph - Average wind speed in February:
9.4mph - Average wind speed in March:
10.7mph - Average wind speed in April:
11.7mph - Average wind speed in May:
11.3mph - Average wind speed in June:
11.3mph
- Average wind speed in July:
10.1mph - Average wind speed in August:
9.4mph - Average wind speed in September:
10.3mph - Average wind speed in October:
9.6mph - Average wind speed in November:
9mph - Average wind speed in December:
8.3mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is January (8.2mph).
Average humidity
Fort Lyon, CO
The month with the highest relative humidity is January (58%).
The month with the lowest relative humidity is June (38%).
Average rainfall
Fort Lyon, CO
- Average rainfall in January:
0.35" - Average rainfall in February:
0.47" - Average rainfall in March:
0.71" - Average rainfall in April:
0.91" - Average rainfall in May:
1.14" - Average rainfall in June:
1.22"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.38" - Average rainfall in September:
0.71" - Average rainfall in October:
0.79" - Average rainfall in November:
0.35" - Average rainfall in December:
0.35"
The wettest month (with the highest rainfall) is July (1.81").
The driest months (with the least rainfall) are January, November and December (0.35").
Average rainfall days
Fort Lyon, CO
- Average rainfall days in January:
3.3 days - Average rainfall days in February:
4.2 days - Average rainfall days in March:
7 days - Average rainfall days in April:
9 days - Average rainfall days in May:
10.6 days - Average rainfall days in June:
10.6 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
11.3 days - Average rainfall days in September:
7.8 days - Average rainfall days in October:
5.3 days - Average rainfall days in November:
3.4 days - Average rainfall days in December:
3.6 days
The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is January (3.3 days).
Average snowfall
Fort Lyon, CO
- Average snowfall in January:
2.05" - Average snowfall in February:
2.17" - Average snowfall in March:
1.69" - Average snowfall in April:
0.43" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Fort Lyon, CO
- Average snowfall days in January:
4.9 days - Average snowfall days in February:
5.2 days - Average snowfall days in March:
2.6 days - Average snowfall days in April:
1.5 days - Average snowfall days in May:
0.1 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:
1.5 days - Average snowfall days in November:
2.6 days - Average snowfall days in December:
4.8 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Fort Lyon, CO
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
6h and 48min - Average sunshine in February:
6h and 42min - Average sunshine in March:
8h and 48min - Average sunshine in April:
10h and 42min - Average sunshine in May:
11h and 18min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
11h and 48min - Average sunshine in September:
10h and 36min - Average sunshine in October:
8h and 0min - Average sunshine in November:
7h and 6min - Average sunshine in December:
6h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days
Fort Lyon, CO
- Average sunshine days in January:
23.8 days - Average sunshine days in February:
20.6 days - Average sunshine days in March:
21.7 days - Average sunshine days in April:
18.8 days - Average sunshine days in May:
18.2 days - Average sunshine days in June:
16.8 days
- Average sunshine days in July:
13.2 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
19.9 days - Average sunshine days in October:
23.2 days - Average sunshine days in November:
24.5 days - Average sunshine days in December:
24.4 days
The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (13.2 days).
Average UV index
Fort Lyon, CO
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover
Fort Lyon, CO
The months with the most cloud cover are February and April (Cloud cover 25).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility
Fort Lyon, 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).
