Climate and monthly weather forecastSimla, CO
Climate and monthly weather forecast
Weather in January
January, like December, in Simla, Colorado, is an icy winter month, with an average temperature fluctuating between 23.4°F (-4.8°C) and 41.2°F (5.1°C). Simla's average high-temperature marks a still wintry 41.2°F (5.1°C) with the advent of January, closely mirroring that of the preceding month. Weather in January »Weather in February
The last month of the winter, February, is another cold month in Simla, Colorado, with temperature in the range of an average low of 23.4°F (-4.8°C) and an average high of 41.2°F (5.1°C). Simla sees an average high-temperature of a still wintry 41.2°F (5.1°C) as it transitions into February, consistent with January. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Simla, Colorado, with an average temperature fluctuating between 53.1°F (11.7°C) and 32.9°F (0.5°C). The shift from February to March brings an increase in the average high-temperature, moving from a cold 41.2°F (5.1°C) to a fresh 53.1°F (11.7°C). Weather in March »Weather in April
April in Simla, Colorado, is a moderate spring month, with an average temperature ranging between max 59.5°F (15.3°C) and min 38.3°F (3.5°C). The shift from March to April is marked by a slight increase in the average high-temperature, moving from a cool 53.1°F (11.7°C) to a moderate 59.5°F (15.3°C). Weather in April »Weather in May
May, the last month of the spring in Simla, is a refreshing month, with an average temperature fluctuating between 67.8°F (19.9°C) and 46.6°F (8.1°C). The onset of May marks a slight increase in the average high-temperature, moving from a mild 59.5°F (15.3°C) in April to a comfortable 67.8°F (19.9°C). Weather in May »Weather in June
June, the first month of the summer in Simla, is a warm month, with an average temperature varying between 58.6°F (14.8°C) and 82.4°F (28°C). The start of June is characterized by a significant increase in the average high-temperature, moving from an enjoyable 67.8°F (19.9°C) in May to a warm 82.4°F (28°C). Weather in June »Weather in July
July is a hot summer month in Simla, Colorado, with an average temperature varying between 86°F (30°C) and 64°F (17.8°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 86°F (30°C) and a low of 64°F (17.8°C). Throughout July, the heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Simla, Colorado, with temperature in the range of an average high of 84°F (28.9°C) and an average low of 61.5°F (16.4°C). Simla's shift into August is marked by a subtle change to a moderately hot 84°F (28.9°C) from July's 86°F (30°C) in temperature. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Simla, Colorado, with temperature in the range of an average high of 76.8°F (24.9°C) and an average low of 55.8°F (13.2°C). The beginning of September subtly marks a decrease in the average high-temperature, transitioning from 84°F (28.9°C) in August to a still warm 76.8°F (24.9°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Simla, Colorado, with an average temperature fluctuating between 61.2°F (16.2°C) and 41.7°F (5.4°C). October's onset brings a noticeable temperature drop, falling from a warm 76.8°F (24.9°C) in September to an enjoyable 61.2°F (16.2°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Simla, Colorado, with an average temperature fluctuating between 32°F (0°C) and 50.5°F (10.3°C). With November's onset, the weather shows a temperature decrease, transitioning from a comfortable 61.2°F (16.2°C) in October to a fresh 50.5°F (10.3°C). Weather in November »Weather in December
December, the first month of the winter in Simla, is also an icy month, with an average temperature varying between 22.3°F (-5.4°C) and 39°F (3.9°C). During the coldest month, December, temperatures average a high of 39°F (3.9°C) and a low of 22.3°F (-5.4°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Simla, CO
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (39°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is December (22.3°F).
Average pressure
Simla, CO
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
29.96"Hg - Average pressure in April:
29.87"Hg - Average pressure in May:
29.88"Hg - Average pressure in June:
29.84"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.04"Hg - Average pressure in December:
30.09"Hg
The months with the highest atmospheric pressure are January and December (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Simla, CO
- Average wind speed in January:
9.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
11.4mph - Average wind speed in April:
12.2mph - Average wind speed in May:
11.2mph - Average wind speed in June:
10.6mph
- Average wind speed in July:
9.5mph - Average wind speed in August:
9.3mph - Average wind speed in September:
9.7mph - Average wind speed in October:
10.2mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity
Simla, CO
The month with the highest relative humidity is February (63%).
The months with the lowest relative humidity are June and September (46%).
Average rainfall
Simla, CO
- Average rainfall in January:
0.24" - Average rainfall in February:
0.39" - Average rainfall in March:
0.63" - Average rainfall in April:
0.59" - Average rainfall in May:
1.77" - Average rainfall in June:
1.3"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.14" - Average rainfall in September:
0.55" - Average rainfall in October:
0.63" - Average rainfall in November:
0.28" - Average rainfall in December:
0.2"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is December (0.2").
Average rainfall days
Simla, CO
- Average rainfall days in January:
2.7 days - Average rainfall days in February:
2.6 days - Average rainfall days in March:
5.1 days - Average rainfall days in April:
7.1 days - Average rainfall days in May:
11.3 days - Average rainfall days in June:
11.7 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
11 days - Average rainfall days in September:
8.2 days - Average rainfall days in October:
5.4 days - Average rainfall days in November:
1.7 days - Average rainfall days in December:
2.5 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (1.7 days).
Average snowfall
Simla, CO
- Average snowfall in January:
1.22" - Average snowfall in February:
1.93" - Average snowfall in March:
1.26" - Average snowfall in April:
1.06" - Average snowfall in May:
0.59" - Average snowfall in June:
0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Simla, CO
- Average snowfall days in January:
4.5 days - Average snowfall days in February:
6.1 days - Average snowfall days in March:
4.1 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:
0.1 days - Average snowfall days in October:
2 days - Average snowfall days in November:
3.5 days - Average snowfall days in December:
3.5 days
The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Simla, CO
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
6h and 54min - Average sunshine in February:
6h and 36min - Average sunshine in March:
8h and 48min - Average sunshine in April:
10h and 42min - Average sunshine in May:
11h and 0min - 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:
10h and 36min - Average sunshine in October:
7h and 42min - Average sunshine in November:
7h and 12min - Average sunshine in December:
6h and 48min
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 36min).
Average sunshine days
Simla, CO
- Average sunshine days in January:
24.8 days - Average sunshine days in February:
20.2 days - Average sunshine days in March:
21.3 days - Average sunshine days in April:
18.3 days - Average sunshine days in May:
16 days - Average sunshine days in June:
14.5 days
- Average sunshine days in July:
13.4 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
18.4 days - Average sunshine days in October:
22.5 days - Average sunshine days in November:
23.7 days - Average sunshine days in December:
24.9 days
The month with the most sunshine days is December (24.9 days).
The month with the least sunshine days is July (13.4 days).
Average UV index
Simla, 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
Simla, CO
The months with the most cloud cover are February and April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility
Simla, 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).





