September weather forecastGreenville, UT
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Greenville, Utah, with an average temperature ranging between max 72.5°F (22.5°C) and min 49.1°F (9.5°C).Temperature
In Greenville, the average high-temperature in September slightly decreases from a warm 80.2°F (26.8°C) in August to a pleasant 72.5°F (22.5°C). The anticipated average low-temperature for September in Greenville, a chilly 49.1°F (9.5°C), shows a substantial deviation from the daytime maximums.Humidity
In September, the average relative humidity is 40%.Rainfall
In September, the rain falls for 7.9 days. Throughout September, 0.87" (22mm) of precipitation is accumulated. Throughout the year, there are 99.6 rainfall days, and 15.98" (406mm) of precipitation is accumulated.Snowfall
Months with snowfall in Greenville 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 0.16" (4mm) of snow. In Greenville, during the entire year, snow falls for 54.2 days and aggregates up to 46.97" (1193mm) of snow.Daylight
The average length of the day in September in Greenville is 12h and 25min.On the first day of September, sunrise is at 7:01 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:14 pm MDT.
Sunshine
In Greenville, Utah, the average sunshine in September is 9.8h.UV index
The average daily maximum UV index in September in Greenville, Utah, is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Prioritize safety - Suggestions to prevent sun damage are offered. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Greenville, UT
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (33.8°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (16.9°F).
Average pressure in September
Greenville, 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 (29.85"Hg).
Average wind speed in September
Greenville, UT
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is June (8.5mph).
The calmest month (with the lowest average wind speed) is January (5.6mph).
Average humidity in September
Greenville, UT
- Average humidity in September: 40%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is June (29%).
Average rainfall in September
Greenville, UT
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is July (2.2").
The driest month (with the least rainfall) is June (0.43").
Average rainfall days in September
Greenville, UT
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is November (4.5 days).
Average snowfall in September
Greenville, UT
- Average snowfall in September: 0.16"
The month with the highest snowfall is December (9.49").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Greenville, 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
Greenville, 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 36min).
- Average sunshine in September: 9h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in September
Greenville, UT
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is June (23.4 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Greenville, UT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Greenville, UT
- Average cloud cover in September: 10
The month with the most cloud cover is December (Cloud cover 36).
The months with the least cloud cover are June, August and September (Cloud cover 10).
Average visibility in September
Greenville, 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 (5mi).
