September weather forecastSomerset, CO
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Somerset, Colorado, with an average temperature ranging between min 41.9°F (5.5°C) and max 67.8°F (19.9°C).Temperature
September is characterized by a slight reduction in average high-temperature, easing from a moderately hot 74.3°F (23.5°C) in August to a refreshing 67.8°F (19.9°C). A marked difference from the daytime temperatures, Somerset's nighttime temperature falls to an average low of 41.9°F (5.5°C) in September.Humidity
In Somerset, the average relative humidity in September is 52%.Rainfall
In Somerset, in September, it is raining for 13.5 days, with typically 1.5" (38mm) of accumulated precipitation. In Somerset, during the entire year, the rain falls for 145.8 days and collects up to 22.87" (581mm) of precipitation.Snowfall
In Somerset, snow does not fall in July through September.Daylight
The average length of the day in September in Somerset is 12h and 26min.On the first day of September in Somerset, sunrise is at 6:39 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:53 pm MDT.
Sunshine
In September, the average sunshine is 10.9h.UV index
The average daily maximum UV index in September in Somerset, Colorado, is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: An average UV index of 4 in September transforms into this advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Somerset, CO
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in September: 41.9°F
The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Somerset, CO
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is May (29.93"Hg).
Average wind speed in September
Somerset, CO
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is June (6.5mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in September
Somerset, CO
- Average humidity in September: 52%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is June (41%).
Average rainfall in September
Somerset, CO
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is March (2.6").
The driest month (with the least rainfall) is June (0.98").
Average rainfall days in September
Somerset, CO
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is April (17.7 days).
The month with the least rainy days is November (7 days).
Average snowfall in September
Somerset, CO
- Average snowfall in September: 0"
The month with the highest snowfall is January (15.43").
The months with the least snowfall are July, August and September (0").
Average snowfall days in September
Somerset, CO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (16.2 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Somerset, 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 30min).
- Average sunshine in September: 10h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Somerset, CO
- Average sunshine days in September: 13 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is April (8 days).
Average UV index in September
Somerset, CO
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Somerset, CO
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 13).
Average visibility in September
Somerset, CO
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
