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
September ushers in a minute temperature change, with average high-temperatures reducing from August's moderately hot 79°F (26.1°C) to a pleasant 70.2°F (21.2°C). Throughout the month of September, the average temperature dips to a chilly 49.6°F (9.8°C) at night.Humidity
The average relative humidity in September is 38%.Rainfall
In Fort Steele, in September, during 7 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. Throughout the year, there are 81.7 rainfall days, and 9.72" (247mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Fort Steele.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:50 pm MDT.
Sunshine
The average sunshine in September is 11.1h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. 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 is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Fort Steele have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Fort Steele, WY
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is December (26.4°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in September
Fort Steele, 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 (29.88"Hg).
Average wind speed in September
Fort Steele, WY
- Average wind speed in September: 10.6mph
The windiest month (with the highest average wind speed) is November (13.2mph).
The calmest months (with the lowest average wind speed) are July and August (9.5mph).
Average humidity in September
Fort Steele, WY
- Average humidity in September: 38%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are July and August (35%).
Average rainfall in September
Fort Steele, WY
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is April (1.42").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in September
Fort Steele, WY
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is May (11.7 days).
The month with the least rainy days is November (3.2 days).
Average snowfall in September
Fort Steele, WY
- Average snowfall in September: 0"
The month with the highest snowfall is April (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Fort Steele, WY
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (14.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Fort Steele, WY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in September
Fort Steele, WY
- Average sunshine days in September: 19.5 days
The month with the most sunshine days is June (21.1 days).
The month with the least sunshine days is February (11.2 days).
Average UV index in September
Fort Steele, 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 Steele, WY
- Average cloud cover in September: 13
The month with the most cloud cover is February (Cloud cover 45).
The months with the least cloud cover are August and September (Cloud cover 13).
Average visibility in September
Fort Steele, WY
- 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).
Fort Steele, Wyoming, USA
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