September weather forecastGreenwood, CO
September
Weather in September
The first month of the autumn, September, is still a warm month in Greenwood, Colorado, with an average temperature varying between 55.6°F (13.1°C) and 77.5°F (25.3°C).Temperature
Greenwood's progression into September involves a gentle drop in the average high-temperature, from a moderately hot 84.6°F (29.2°C) in August to a still warm 77.5°F (25.3°C). Nightfall in September introduces a considerable dip in temperature in Greenwood, settling at an average of 55.6°F (13.1°C).Humidity
In Greenwood, the average relative humidity in September is 44%.Rainfall
In Greenwood, in September, during 11.4 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 120.5 rainfall days, and 14.92" (379mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:44 pm MDT.
Sunshine
The average sunshine in September is 11h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Exercise prevention - Warding off sunburn is urged. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Greenwood, CO
- Average high temperature in September: 77.5°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (41.5°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in September
Greenwood, CO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).
Average wind speed in September
Greenwood, CO
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Greenwood, CO
- Average humidity in September: 44%
The month with the highest relative humidity is February (62%).
The month with the lowest relative humidity is June (38%).
Average rainfall in September
Greenwood, CO
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is November (0.43").
Average rainfall days in September
Greenwood, CO
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is November (3.9 days).
Average snowfall in September
Greenwood, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Greenwood, CO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Greenwood, 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 36min).
- Average sunshine in September: 11h and 0min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in September
Greenwood, CO
- Average sunshine days in September: 13 days
The month with the most sunshine days is November (23.8 days).
The month with the least sunshine days is July (5.1 days).
Average UV index in September
Greenwood, 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
Greenwood, CO
- Average cloud cover in September: 14
The months with the most cloud cover are February and April (Cloud cover 23).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility in September
Greenwood, 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).
