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
With the arrival of September, Vernon notices a mild change in the average high-temperature, sliding from August's tropical 87.8°F (31°C) to a warm 80.2°F (26.8°C). Vernon documents a marked decrease from day to night, with an average low of 58.1°F (14.5°C) throughout September.Humidity
July and September, with an average relative humidity of 49%, are the least humid months.Rainfall
In Vernon, in September, during 9 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. In Vernon, during the entire year, the rain falls for 100.9 days and collects up to 14.02" (356mm) of precipitation.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. In Vernon, during the entire year, snow falls for 22.8 days and aggregates up to 10.08" (256mm) of snow.Daylight
In Vernon, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:17 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:32 pm MDT.
Sunshine
In Vernon, the average sunshine in September is 9.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, a regular UV index of 5 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What are the least humid months?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Vernon have in September?
How high is the UV index in September?
Average temperature in September
Vernon, CO
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is December (40.6°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in September
Vernon, CO
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).
Average wind speed in September
Vernon, CO
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is April (12.3mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in September
Vernon, CO
- Average humidity in September: 49%
The months with the highest relative humidity are January, February and December (63%).
The months with the lowest relative humidity are July and September (49%).
Average rainfall in September
Vernon, CO
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January, February and December (0.28").
Average rainfall days in September
Vernon, CO
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (1.8 days).
Average snowfall in September
Vernon, CO
- Average snowfall in September: 0.08"
The month with the highest snowfall is October (1.93").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Vernon, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Vernon, CO
- 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 months with the most sunshine are June, July and August (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in September
Vernon, CO
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is December (26 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in September
Vernon, CO
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Vernon, CO
- Average cloud cover in September: 20
The month with the most cloud cover is February (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Vernon, CO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Vernon, Colorado, USA
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