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 the transition to September, Chester observes a minor drop in the average high-temperature, shifting from a moderately hot 79.7°F (26.5°C) in August to an agreeable 71.1°F (21.7°C). Chester notes a substantial temperature decline from the daytime peaks throughout September, with an average nighttime temperature of 45.3°F (7.4°C).Humidity
In September, the average relative humidity in Chester is 46%.Rainfall
In Chester, in September, it is raining for 8.4 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, in Chester, there are 79.2 rainfall days, and 10.31" (262mm) 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 0.08" (2mm) of snow. Throughout the year, there are 53.2 snowfall days, and 31.69" (805mm) of snow is accumulated.Daylight
In September, the average length of the day in Chester is 12h and 26min.On the first day of September in Chester, sunrise is at 6:55 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:09 pm MDT.
Sunshine
The average sunshine in September in Chester is 10.1h.UV index
In September, the average daily maximum UV index in Chester is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Chester in September?
What is the average humidity in September in Chester?
How much does it rain in Chester in September?
When does it start snowing in Chester?
What is the average length of the day in September in Chester?
When is the sunrise / sunset in September in Chester?
How long on average sun shines in September in Chester?
What is the UV index intensity in September in Chester?
Average temperature in September
Chester, UT
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in September: 45.3°F
The month with the highest average low temperature is July (53.2°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).
Average pressure in September
Chester, UT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Chester, UT
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are April and June (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.7mph).
Average humidity in September
Chester, UT
- Average humidity in September: 46%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is June (38%).
Average rainfall in September
Chester, UT
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is June (0.39").
Average rainfall days in September
Chester, UT
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is July (11.4 days).
The month with the least rainy days is December (3.3 days).
Average snowfall in September
Chester, UT
- Average snowfall in September: 0.08"
The month with the highest snowfall is December (6.46").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Chester, UT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (11.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Chester, UT
- Average daylight in September: 12h and 2min
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 24min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Chester, UT
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is October (23.3 days).
The month with the least sunshine days is July (15.5 days).
Average UV index in September
Chester, 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, April, October, November and December (UV index 2).
Average cloud cover in September
Chester, UT
- Average cloud cover in September: 12
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are August and September (Cloud cover 12).
Average visibility in September
Chester, 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 months with the lowest visibility are January, February and December (4mi).
Chester, Utah, USA
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