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
Fort Washakie's September weather comes with a decrease in average high-temperatures, moving from a moderately hot 79.5°F (26.4°C) in August to a pleasant 70.3°F (21.3°C). Fort Washakie experiences a drastic reduction from day temperatures to an average low of 48.6°F (9.2°C) in September.Humidity
In September, the average relative humidity is 38%.Rainfall
In September, in Fort Washakie, Wyoming, the rain falls for 6.1 days. Throughout September, 0.47" (12mm) of precipitation is accumulated. In Fort Washakie, during the entire year, the rain falls for 92.3 days and collects up to 9.92" (252mm) 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. Throughout the year, in Fort Washakie, there are 56.6 snowfall days, and 39.65" (1007mm) of snow is accumulated.Daylight
In September, the average length of the day in Fort Washakie, Wyoming, is 12h and 29min.On the first day of September in Fort Washakie, sunrise is at 6:40 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:57 pm MDT.
Sunshine
The average sunshine in September in Fort Washakie is 10.9h.UV index
In Fort Washakie, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What is the average September temperature in Fort Washakie?
What is the average humidity in September in Fort Washakie?
How many days does it rain in September in Fort Washakie?
When does it start snowing in Fort Washakie?
What is the average length of the day in September in Fort Washakie?
When are sunrise and sunset in September in Fort Washakie?
How many hours of sunshine does Fort Washakie have in September?
How high is the UV index in September in Fort Washakie?
Average temperature in September
Fort Washakie, WY
- Average high temperature in September: 70.3°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 (28.4°F).
- Average low temperature in September: 48.6°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 (13.1°F).
Average pressure in September
Fort Washakie, WY
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Fort Washakie, WY
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Fort Washakie, WY
- Average humidity in September: 38%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is August (34%).
Average rainfall in September
Fort Washakie, WY
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is April (1.81").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Fort Washakie, WY
- Average rainfall days in September: 6.1 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is November (4.8 days).
Average snowfall in September
Fort Washakie, WY
- Average snowfall in September: 0.08"
The month with the highest snowfall is April (8.15").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Fort Washakie, WY
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Fort Washakie, WY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 6h and 54min).
Average sunshine days in September
Fort Washakie, WY
- Average sunshine days in September: 21.6 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in September
Fort Washakie, WY
- 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, April, October, November and December (UV index 2).
Average cloud cover in September
Fort Washakie, WY
- Average cloud cover in September: 13
The months with the most cloud cover are February and April (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Fort Washakie, WY
- 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).
Fort Washakie, Wyoming, USA
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