Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As Snowmass enters September, the average high-temperature subtly lowers from the a warm 74.1°F (23.4°C) of August to a refreshing 66.9°F (19.4°C). Despite a significant disparity with daytime temperatures, an average low-temperature of 37.2°F (2.9°C) is recorded during September.Humidity
The average relative humidity in September in Snowmass is 54%.Rainfall
September is the month with the least rainfall. Rain falls for 9.2 days and accumulates 0.63" (16mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Snowmass, there are 100.5 snowfall days, and 78.03" (1982mm) of snow is accumulated.Daylight
The average length of the day in September in Snowmass is 12h and 26min.On the first day of September, sunrise is at 6:37 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:51 pm MDT.
Sunshine
In Snowmass, Colorado, the average sunshine in September is 11.1h.UV index
The average daily maximum UV index in September in Snowmass is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Snowmass?
What is the average humidity in September in Snowmass?
What is the driest month in Snowmass?
How much does it rain in Snowmass in September?
When does it start to snow in Snowmass?
What is the average length of the day in September in Snowmass?
When are sunrise and sunset in September in Snowmass?
How many hours of sunshine does Snowmass have in September?
What is the UV index intensity in September in Snowmass?
Average temperature in September
Snowmass, CO
- Average high temperature in September: 66.9°F
The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in September: 37.2°F
The month with the highest average low temperature is July (43.9°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in September
Snowmass, CO
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is May (29.94"Hg).
Average wind speed in September
Snowmass, CO
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is June (5.9mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in September
Snowmass, CO
- Average humidity in September: 54%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is June (48%).
Average rainfall in September
Snowmass, CO
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is April (2.05").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days in September
Snowmass, CO
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is November (5.1 days).
Average snowfall in September
Snowmass, CO
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (13.94").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Snowmass, CO
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is February (18.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Snowmass, CO
- Average daylight in September: 12h and 2min
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 September: 11h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in September
Snowmass, CO
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is April (7.3 days).
Average UV index in September
Snowmass, CO
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Snowmass, CO
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 43).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility in September
Snowmass, CO
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Snowmass, Colorado, USA
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