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
The shift to September brings a decrease in the average high-temperature, falling from 84.4°F (29.1°C) in August to a still moderately hot 74.5°F (23.6°C). During September, Vernon's temperature falls to a steady low-temperature average of 54.5°F (12.5°C).Humidity
In September, the average relative humidity is 39%.Rainfall
In September, the rain falls for 10.7 days. Throughout September, 1.38" (35mm) of precipitation is accumulated. In Vernon, during the entire year, the rain falls for 120.7 days and collects up to 18.39" (467mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Vernon, Utah. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Vernon, during the entire year, snow falls for 68.4 days and aggregates up to 55.94" (1421mm) of snow.Daylight
In Vernon, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:58 am and sunset at 8:00 pm. On the last day of September, in Vernon, sunrise is at 7:25 am and sunset at 7:13 pm MDT.
Sunshine
In Vernon, the average sunshine in September is 9.8h.UV index
In Vernon, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the 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 are September temperatures in Vernon?
What is the average humidity in September in Vernon?
How much does it rain in Vernon in September?
When does it start snowing in Vernon?
What is the average length of the day in September in Vernon?
When is the sunrise / sunset in September in Vernon?
How many hours of sunshine does Vernon have in September?
How high is the UV index in September in Vernon?
Average temperature in September
Vernon, UT
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (32.4°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Vernon, UT
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Vernon, UT
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is January (5.3mph).
Average humidity in September
Vernon, UT
- Average humidity in September: 39%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (33%).
Average rainfall in September
Vernon, UT
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is April (2.09").
The driest month (with the least rainfall) is June (0.79").
Average rainfall days in September
Vernon, UT
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is May (13.3 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in September
Vernon, UT
- Average snowfall in September: 0.04"
The months with the highest snowfall are January and December (12.99").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Vernon, UT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Vernon, UT
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Vernon, UT
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is February (11.6 days).
Average UV index in September
Vernon, 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 December (UV index 1).
Average cloud cover in September
Vernon, UT
- Average cloud cover in September: 13
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Vernon, 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).
Vernon, Utah, USA
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