Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In September, the meteorological conditions alter, with the average high-temperature shifting from a moderately hot 84.9°F (29.4°C) in August to a still warm 74.3°F (23.5°C). Deweyville experiences a consistent, yet significant, drop from daily highs to a low-temperature of 51.3°F (10.7°C) throughout September.Humidity
In Deweyville, the average relative humidity in September is 41%.Rainfall
In September, the rain falls for 8.3 days. Throughout September, 0.91" (23mm) of precipitation is accumulated. In Deweyville, during the entire year, the rain falls for 120 days and collects up to 15.43" (392mm) of precipitation.Snowfall
Months with snowfall in Deweyville are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.39" (10mm) of snow. Throughout the year, there are 61.2 snowfall days, and 42.91" (1090mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:55 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:11 pm MDT.
Sunshine
In September, the average sunshine is 9.9h.UV index
In Deweyville, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
How many hours of daylight does Deweyville have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Deweyville have in September?
What is the UV index reading in September?
Average temperature in September
Deweyville, UT
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in September
Deweyville, 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
Deweyville, UT
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in September
Deweyville, UT
- Average humidity in September: 41%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (34%).
Average rainfall in September
Deweyville, UT
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is February (2.05").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in September
Deweyville, UT
- Average rainfall days in September: 8.3 days
The month with the highest number of rainy days is April (15.1 days).
The month with the least rainy days is July (5.5 days).
Average snowfall in September
Deweyville, UT
- Average snowfall in September: 0.39"
The month with the highest snowfall is January (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Deweyville, UT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Deweyville, UT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 5min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Deweyville, UT
- Average sunshine days in September: 19 days
The month with the most sunshine days is July (21.6 days).
The month with the least sunshine days is February (10.1 days).
Average UV index in September
Deweyville, UT
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Deweyville, UT
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Deweyville, 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).
Deweyville, Utah, USA
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