September weather forecastHyrum, UT
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Hyrum, Utah, with an average temperature fluctuating between 71.4°F (21.9°C) and 47.7°F (8.7°C).Temperature
With the onset of September, Hyrum's average high-temperature adjusts, receding from August's warm 81.1°F (27.3°C) to an agreeable 71.4°F (21.9°C). The average low-temperature reading in September for Hyrum reflects a significant fall from the daytime highs, stabilizing at a chilly 47.7°F (8.7°C).Humidity
In September, the average relative humidity is 45%.Rainfall
In September, in Hyrum, the rain falls for 7.8 days. Throughout September, 0.75" (19mm) of precipitation is accumulated. Throughout the year, in Hyrum, there are 122.8 rainfall days, and 16.89" (429mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.31" (8mm) of snow. In Hyrum, during the entire year, snow falls for 77.8 days and aggregates up to 58.86" (1495mm) of snow.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:54 am and sunset at 8:00 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:10 pm MDT.
Sunshine
The average sunshine in September is 10h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the UV index of 3 transforms into the following advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hyrum, UT
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The months with the lowest average high temperature are January and December (28.8°F).
- Average low temperature in September: 47.7°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in September
Hyrum, UT
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Hyrum, UT
- Average wind speed in September: 5.4mph
The windiest months (with the highest average wind speed) are April and June (5.8mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in September
Hyrum, UT
- Average humidity in September: 45%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (38%).
Average rainfall in September
Hyrum, UT
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is January (2.36").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Hyrum, UT
- Average rainfall days in September: 7.8 days
The month with the highest number of rainy days is April (16.1 days).
The month with the least rainy days is August (6 days).
Average snowfall in September
Hyrum, UT
- Average snowfall in September: 0.31"
The month with the highest snowfall is January (16.18").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Hyrum, UT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Hyrum, UT
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Hyrum, UT
- Average sunshine days in September: 20.3 days
The month with the most sunshine days is June (21.6 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in September
Hyrum, UT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Hyrum, UT
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Hyrum, UT
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
