September weather forecastKoosharem, UT
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Koosharem, Utah, with an average temperature varying between 47.1°F (8.4°C) and 67.6°F (19.8°C).Temperature
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 74.3°F (23.5°C) in August to an enjoyable 67.6°F (19.8°C). Koosharem, in the month of September, anticipates a consistent average low-temperature of 47.1°F (8.4°C).Humidity
The average relative humidity in September in Koosharem is 42%.Rainfall
In Koosharem, in September, during 8.4 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, there are 71.2 rainfall days, and 9.84" (250mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.16" (4mm) of snow. In Koosharem, during the entire year, snow falls for 64.4 days and aggregates up to 44.17" (1122mm) of snow.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:11 pm MDT.
Sunshine
In September, the average sunshine is 9.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Koosharem, UT
- Average high temperature in September: 67.6°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is July (55°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Koosharem, UT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Koosharem, UT
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in September
Koosharem, UT
- Average humidity in September: 42%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is June (32%).
Average rainfall in September
Koosharem, UT
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is July (1.26").
The driest month (with the least rainfall) is June (0.43").
Average rainfall days in September
Koosharem, UT
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is November (1.7 days).
Average snowfall in September
Koosharem, UT
- Average snowfall in September: 0.16"
The month with the highest snowfall is March (8.07").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Koosharem, UT
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is December (11.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Koosharem, UT
- 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: 9h and 54min
The month with the most sunshine is August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Koosharem, UT
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Koosharem, UT
- 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, March, October, November and December (UV index 2).
Average cloud cover in September
Koosharem, UT
- Average cloud cover in September: 12
The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is September (Cloud cover 12).
Average visibility in September
Koosharem, UT
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
