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
With the onset of September, Vail's climate undergoes a slight change as the average high-temperature moves from a pleasant 68.5°F (20.3°C) in August to a comfortable 61.9°F (16.6°C). Vail, during the nights of September, registers a substantial plunge from the daytime high, averaging at a wintry 35.1°F (1.7°C).Humidity
In September, the average relative humidity in Vail is 56%.Rainfall
In Vail, in September, it is raining for 8.4 days, with typically 0.83" (21mm) of accumulated precipitation. In Vail, during the entire year, the rain falls for 82.8 days and collects up to 14.8" (376mm) of precipitation.Snowfall
Months with snowfall in Vail are January through December. In Vail, Colorado, in September, snow falls for 2.5 days, with typically accumulated 0.71" (18mm) of snow. Throughout the year, there are 107.8 snowfall days, and 77.72" (1974mm) of snow is accumulated.Daylight
In September, the average length of the day in Vail is 12h and 26min.On the first day of September in Vail, sunrise is at 6:34 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:48 pm MDT.
Sunshine
The average sunshine in September in Vail is 11.1h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What are the temperatures in Vail in September?
What is the average humidity in September in Vail?
How much does it rain in Vail in September?
How many days does it snow in September in Vail?
How many hours of daylight does Vail have in September?
When is the sunrise / sunset in September in Vail?
How long on average sun shines in September in Vail?
What is the UV index reading in September in Vail?
Average temperature in September
Vail, CO
- Average high temperature in September: 61.9°F
The warmest month (with the highest average high temperature) is July (70.3°F).
The months with the lowest average high temperature are January and December (24.1°F).
- Average low temperature in September: 35.1°F
The month with the highest average low temperature is July (41.4°F).
The coldest month (with the lowest average low temperature) is January (1.2°F).
Average pressure in September
Vail, CO
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The months with the lowest atmospheric pressure are April and May (29.94"Hg).
Average wind speed in September
Vail, CO
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is June (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Vail, CO
- Average humidity in September: 56%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is June (51%).
Average rainfall in September
Vail, CO
- Average rainfall in September: 0.83"
The wettest months (with the highest rainfall) are May and July (1.77").
The driest month (with the least rainfall) is November (0.71").
Average rainfall days in September
Vail, CO
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is November (1.6 days).
Average snowfall in September
Vail, CO
- Average snowfall in September: 0.71"
The month with the highest snowfall is February (11.38").
The month with the least snowfall is July (0.12").
Average snowfall days in September
Vail, CO
- Average snowfall days in September: 2.5 days
The month with the highest number of snowfall days is February (16 days).
The month with the least snowfall days is July (0.3 days).
Average daylight in September /
Average sunshine in September
Vail, 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 24min).
- 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 30min).
Average sunshine days in September
Vail, CO
- Average sunshine days in September: 17 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in September
Vail, CO
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Vail, CO
- Average cloud cover in September: 16
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 15).
Average visibility in September
Vail, CO
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Vail, Colorado, USA
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