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 September begins, there is a minor decrease in the average high-temperature, softly falling from an agreeable 71.2°F (21.8°C) in August to an enjoyable 64.9°F (18.3°C). Despite the intense daytime heat, Allenspark sustains a steady low-temperature average of 41.5°F (5.3°C) during September.Humidity
The average relative humidity in September is 51%.Rainfall
In Allenspark, in September, during 13.3 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Allenspark, during the entire year, the rain falls for 137.4 days and collects up to 27.32" (694mm) of precipitation.Snowfall
January through June, August through December are months with snowfall. In Allenspark, during September, snow falls for 2.1 days and regularly aggregates up to 1.34" (34mm) of snow. Throughout the year, there are 118 snowfall days, and 107.17" (2722mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:45 pm MDT.
Sunshine
The average sunshine in September is 10.5h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 3 suggests this advice:
Take precautions - Protection against sunburn is recommended. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in Allenspark in September?
How much does it snow in September?
How many hours of daylight does Allenspark have in September?
When is the sunrise / sunset in September in Allenspark?
How many hours of sunshine does Allenspark have in September?
What is the UV index intensity in September?
Average temperature in September
Allenspark, CO
- Average high temperature in September: 64.9°F
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is December (27.7°F).
- Average low temperature in September: 41.5°F
The month with the highest average low temperature is July (48.6°F).
The coldest month (with the lowest average low temperature) is December (11.8°F).
Average pressure in September
Allenspark, CO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.92"Hg).
Average wind speed in September
Allenspark, CO
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Allenspark, CO
- Average humidity in September: 51%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is June (50%).
Average rainfall in September
Allenspark, CO
- Average rainfall in September: 2.01"
The wettest months (with the highest rainfall) are May and July (4.29").
The driest months (with the least rainfall) are January, November and December (1.02").
Average rainfall days in September
Allenspark, CO
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (23.1 days).
The month with the least rainy days is November (4.5 days).
Average snowfall in September
Allenspark, CO
- Average snowfall in September: 1.34"
The month with the highest snowfall is April (20.35").
The month with the least snowfall is July (0").
Average snowfall days in September
Allenspark, CO
- Average snowfall days in September: 2.1 days
The month with the highest number of snowfall days is March (17.1 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Allenspark, CO
- Average daylight in September: 12h and 2min
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 September: 10h and 3min
The months with the most sunshine are June and July (Average sunshine: 11h and 12min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days in September
Allenspark, CO
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (6.3 days).
Average UV index in September
Allenspark, CO
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Allenspark, CO
- Average cloud cover in September: 21
The months with the most cloud cover are February and May (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 21).
Average visibility in September
Allenspark, CO
- Average visibility in September: 6mi
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).
Allenspark, Colorado, USA
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