September weather forecastGypsum, CO
September
Weather in September
September, the first month of the autumn in Gypsum, is still a comfortable month, with an average temperature varying between 37.9°F (3.3°C) and 66.7°F (19.3°C).Temperature
With the arrival of September, Gypsum notices a mild change in the average high-temperature, sliding from August's moderately hot 74.1°F (23.4°C) to a refreshing 66.7°F (19.3°C). Gypsum registers a substantial downturn from daytime peaks throughout September nights, with an average low-temperature of 37.9°F (3.3°C).Humidity
In September, the average relative humidity is 53%.Rainfall
September is the month with the least rainfall. Rain falls for 11.3 days and accumulates 0.87" (22mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. 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, there are 99 snowfall days, and 71.06" (1805mm) 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 6:36 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:51 pm MDT.
Sunshine
In Gypsum, the average sunshine in September is 11.1h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 3 in September transforms into the following instructions:
Undertake precautions - Guarding against sun damage is counselled. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. 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
Average temperature in September
Gypsum, CO
- Average high temperature in September: 66.7°F
The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in September: 37.9°F
The month with the highest average low temperature is July (44.2°F).
The coldest month (with the lowest average low temperature) is January (4.6°F).
Average pressure in September
Gypsum, 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
Gypsum, CO
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in September
Gypsum, CO
- Average humidity in September: 53%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is June (49%).
Average rainfall in September
Gypsum, CO
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is April (2.36").
The driest month (with the least rainfall) is September (0.87").
Average rainfall days in September
Gypsum, CO
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (5.8 days).
Average snowfall in September
Gypsum, CO
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (13.74").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Gypsum, CO
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is February (18.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Gypsum, CO
- Average daylight in September: 12h and 24min
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 6min
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 48min).
Average sunshine days in September
Gypsum, CO
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is April (6.2 days).
Average UV index in September
Gypsum, CO
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Gypsum, 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
Gypsum, 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).
