September weather forecastColorado Springs, CO
September
Weather in September
September marks the onset fall or autumn in Colorado Springs. The temperatures decline, yet stay comfortable within a margin of 48.2°F (9°C) to 70.9°F (21.6°C). Rainfall and snowfall remain low, reflecting the typical dry spell associated with the fall season. The decrease in daylight is noticeable, yet ample sunshine ensures clear visibility. While wind speeds marginally increase from August, they contribute to the mellow climate of September.Temperature
Colorado Springs's weather subtly changes with the onset of September, barely falling from a warm 77.2°F (25.1°C) in August to a pleasant 70.9°F (21.6°C). Colorado Springs experiences a dramatic descent in temperature during September, with the average nighttime reading settling at a frosty 48.2°F (9°C).Humidity
In Colorado Springs, the average relative humidity in September is 51%.Rainfall
In Colorado Springs, during September, the rain falls for 10.5 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, there are 120.3 rainfall days, and 18.7" (475mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 56.2 snowfall days, and 42.13" (1070mm) of snow is accumulated.Daylight
In September, the average length of the day in Colorado Springs is 12h and 25min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:29 pm. On the last day of September, in Colorado Springs, sunrise is at 6:55 am and sunset at 6:43 pm MDT.
Sunshine
The average sunshine in September is 10.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 4 in September transforms into this advice:
Be vigilant - Preventing sunburn is recommended. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Colorado Springs, CO
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is December (37.2°F).
- Average low temperature in September: 48.2°F
The month with the highest average low temperature is July (54.7°F).
The coldest month (with the lowest average low temperature) is December (18.3°F).
Average pressure in September
Colorado Springs, CO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).
Average wind speed in September
Colorado Springs, CO
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Colorado Springs, CO
- Average humidity in September: 51%
The month with the highest relative humidity is February (67%).
The month with the lowest relative humidity is June (46%).
Average rainfall in September
Colorado Springs, CO
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is July (3.27").
The driest months (with the least rainfall) are November and December (0.63").
Average rainfall days in September
Colorado Springs, CO
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is February (3.5 days).
Average snowfall in September
Colorado Springs, CO
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (7.2").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Colorado Springs, CO
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Colorado Springs, CO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 10h and 54min
The months with the most sunshine are June and August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in September
Colorado Springs, CO
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in September
Colorado Springs, CO
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Colorado Springs, CO
- Average cloud cover in September: 17
The month with the most cloud cover is April (Cloud cover 29).
The months with the least cloud cover are September and November (Cloud cover 17).
Average visibility in September
Colorado Springs, 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).
