September weather forecastColumbine, CO
September
Weather in September
September, the first month of the autumn in Columbine, is also a moderately hot month, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 76.5°F (24.7°C).Temperature
The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a moderately hot 82.9°F (28.3°C) to a still warm 76.5°F (24.7°C). In Columbine, the nighttime temperature registers a significant drop from daytime peaks to an average of 50.5°F (10.3°C) in September.Humidity
The months with the lowest humidity in Columbine, Colorado, are June and September, with an average relative humidity of 43%.Rainfall
In Columbine, in September, it is raining for 6.1 days, with typically 0.31" (8mm) of accumulated precipitation. Throughout the year, there are 76.4 rainfall days, and 7.09" (180mm) of precipitation is accumulated.Snowfall
In Columbine, snow does not fall in June through September.Daylight
The average length of the day in September in Columbine, Colorado, is 12h and 26min.On the first day of September in Columbine, sunrise is at 6:29 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:43 pm MDT.
Sunshine
In September, the average sunshine is 11.1h.UV index
The average daily maximum UV index in September in Columbine is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 5 in September translates into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Columbine, CO
- Average high temperature in September: 76.5°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is December (40.3°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is February (19.9°F).
Average pressure in September
Columbine, CO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).
Average wind speed in September
Columbine, CO
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Columbine, CO
- Average humidity in September: 43%
The month with the highest relative humidity is February (66%).
The months with the lowest relative humidity are June and September (43%).
Average rainfall in September
Columbine, CO
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in September
Columbine, CO
- Average rainfall days in September: 6.1 days
The month with the highest number of rainy days is July (11.5 days).
The month with the least rainy days is November (2 days).
Average snowfall in September
Columbine, CO
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Columbine, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Columbine, 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 months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).
Average sunshine days in September
Columbine, CO
- Average sunshine days in September: 21.4 days
The month with the most sunshine days is October (24.8 days).
The month with the least sunshine days is July (14.6 days).
Average UV index in September
Columbine, CO
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Columbine, CO
- Average cloud cover in September: 14
The month with the most cloud cover is April (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in September
Columbine, 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).
