September weather forecastGlen Haven, CO
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Glen Haven, Colorado, with an average temperature varying between 41.9°F (5.5°C) and 64.9°F (18.3°C).Temperature
The average high-temperature slightly decreases in September, shifting from a pleasant 71.2°F (21.8°C) in August to a comfortable 64.9°F (18.3°C). Glen Haven's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 41.9°F (5.5°C) in September.Humidity
The average relative humidity in September is 51%.Rainfall
In Glen Haven, in September, it is raining for 9 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 117 rainfall days, and 23.35" (593mm) of precipitation is accumulated.Snowfall
January through June, August through December are months with snowfall. In Glen Haven, during September, snow falls for 1.1 days and regularly aggregates up to 0.71" (18mm) of snow. In Glen Haven, Colorado, during the entire year, snow falls for 114.1 days and aggregates up to 105.67" (2684mm) of snow.Daylight
In Glen Haven, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:29 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
In September, the average sunshine in Glen Haven is 10.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 3 in September translates into these instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Glen Haven, CO
- Average high temperature in September: 64.9°F
The warmest month (with the highest average high temperature) is July (72.5°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in September: 41.9°F
The month with the highest average low temperature is July (49.3°F).
The coldest months (with the lowest average low temperature) are February and December (12.6°F).
Average pressure in September
Glen Haven, CO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Glen Haven, CO
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Glen Haven, CO
- Average humidity in September: 51%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is June (50%).
Average rainfall in September
Glen Haven, CO
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is December (1.02").
Average rainfall days in September
Glen Haven, CO
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is November (3.6 days).
Average snowfall in September
Glen Haven, CO
- Average snowfall in September: 0.71"
The month with the highest snowfall is April (21.3").
The month with the least snowfall is July (0").
Average snowfall days in September
Glen Haven, CO
- Average snowfall days in September: 1.1 days
The month with the highest number of snowfall days is March (16.8 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Glen Haven, CO
- Average daylight in September: 12h and 24min
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 18min).
- Average sunshine in September: 10h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days in September
Glen Haven, CO
- Average sunshine days in September: 19.4 days
The month with the most sunshine days is September (19.4 days).
The month with the least sunshine days is May (8.2 days).
Average UV index in September
Glen Haven, 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
Glen Haven, CO
- Average cloud cover in September: 22
The months with the most cloud cover are February and May (Cloud cover 39).
The months with the least cloud cover are June and September (Cloud cover 22).
Average visibility in September
Glen Haven, 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).
