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
Sun Valley, Nevada, in September experiences a gentle temperature dip, with average high-temperatures reducing from 82.9°F (28.3°C) in August to a still moderately hot 74.8°F (23.8°C). The nighttime temperature shows a significant divergence from the daytime highs, averaging at a chilly 49.8°F (9.9°C) in September.Humidity
In September, the average relative humidity in Sun Valley, Nevada, is 33%.Rainfall
In Sun Valley, in September, during 2.5 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. Throughout the year, in Sun Valley, there are 68 rainfall days, and 8.07" (205mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Sun Valley. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 33.2 snowfall days, and 23.62" (600mm) of snow is accumulated.Daylight
The average length of the day in September in Sun Valley is 12h and 26min.On the first day of September in Sun Valley, sunrise is at 6:28 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm PDT.
Sunshine
In September, the average sunshine is 11.1h.UV index
The average daily maximum UV index in September in Sun Valley is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during September leads to these instructions:
Exercise prevention - Protecting skin and eyes from harm is required. To guard against the harmful effects of the Sun, minimize exposure during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Sun Valley in September?
What is the average humidity in September in Sun Valley?
How much does it rain in Sun Valley in September?
When does it start snowing in Sun Valley?
What is the average length of the day in September in Sun Valley?
When are sunrise and sunset in September in Sun Valley?
How long on average sun shines in September in Sun Valley?
How high is the UV index in September in Sun Valley?
Average temperature in September
Sun Valley, NV
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (37.8°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is December (23.4°F).
Average pressure in September
Sun Valley, NV
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Sun Valley, NV
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in September
Sun Valley, NV
- Average humidity in September: 33%
The month with the highest relative humidity is January (73%).
The months with the lowest relative humidity are July and August (28%).
Average rainfall in September
Sun Valley, NV
- Average rainfall in September: 0.16"
The wettest month (with the highest rainfall) is February (1.38").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in September
Sun Valley, NV
- Average rainfall days in September: 2.5 days
The month with the highest number of rainy days is March (11.2 days).
The month with the least rainy days is August (1.8 days).
Average snowfall in September
Sun Valley, NV
- Average snowfall in September: 0.12"
The month with the highest snowfall is February (6.06").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Sun Valley, NV
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (7.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Sun Valley, NV
- 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: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Sun Valley, NV
- Average sunshine days in September: 26.9 days
The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is March (15.9 days).
Average UV index in September
Sun Valley, NV
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Sun Valley, NV
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 33).
The months with the least cloud cover are July and August (Cloud cover 7).
Average visibility in September
Sun Valley, NV
- 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).
Sun Valley, Nevada, USA
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