September weather forecast
Fort Bridger, WY

Weather in September

September, the first month of the autumn in Fort Bridger, is still a pleasant month, with an average temperature varying between 47.8°F (8.8°C) and 68.5°F (20.3°C).

Temperature

In September, the average high-temperature slightly decreases from a moderately hot 76.6°F (24.8°C) in August to an agreeable 68.5°F (20.3°C). In September, in Fort Bridger, the average low-temperature is 47.8°F (8.8°C).

Humidity

In Fort Bridger, the average relative humidity in September is 39%.

Rainfall

In Fort Bridger, during September, the rain falls for 8 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, in Fort Bridger, there are 112.2 rainfall days, and 11.57" (294mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows in Fort Bridger. Throughout September, in the average 0.7 snowfall days, it receives 0.43" (11mm) of snow. Throughout the year, there are 85.7 snowfall days, and 41.18" (1046mm) of snow is accumulated.

Daylight

In September, the average length of the day in Fort Bridger, Wyoming, is 12h and 28min.
On the first day of the month, sunrise is at 6:48 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:05 pm MDT.

Sunshine

In Fort Bridger, the average sunshine in September is 10.5h.

UV index

In Fort Bridger, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in September in Fort Bridger?

In Fort Bridger, Wyoming, the average relative humidity in September is 39%.

How many days does it rain in September in Fort Bridger?

In September, in Fort Bridger, Wyoming, the rain falls for 8 days. Throughout September, 0.79" (20mm) of precipitation is accumulated.

When does it start to snow in Fort Bridger?

September is the first month it typically snows. Throughout September, in the average 0.7 snowfall days, it receives 0.43" (11mm) of snow.

How many hours of daylight does Fort Bridger have in September?

In September, the average day length is 12h and 28min.

When is the sunrise / sunset in September in Fort Bridger?

On the first day of September, sunrise is at 6:48 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:05 pm MDT.

How long on average sun shines in September in Fort Bridger?

The average sunshine duration in September in Fort Bridger is 10.5h.

How high is the UV index in September in Fort Bridger?

The average daily maximum UV index in September in Fort Bridger, Wyoming, is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Fort Bridger, WY

Average temperature in September - Fort Bridger, WY
  • Average high temperature in September: 68.5°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is December (26.6°F).

  • Average low temperature in September: 47.8°F

The month with the highest average low temperature is July (55.6°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

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Average pressure in September
Fort Bridger, WY

Average pressure in September - Fort Bridger, WY
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in September
Fort Bridger, WY

Average wind speed in September - Fort Bridger, WY
  • Average wind speed in September: 8.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

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Average humidity in September
Fort Bridger, WY

Average humidity in September - Fort Bridger, WY
  • Average humidity in September: 39%

The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are July and August (36%).

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Average rainfall in September
Fort Bridger, WY

Average rainfall in September - Fort Bridger, WY
  • Average rainfall in September: 0.79"

The wettest month (with the highest rainfall) is May (2.01").
The driest months (with the least rainfall) are January and July (0.63").

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Average rainfall days in September
Fort Bridger, WY

Average rainfall days in September - Fort Bridger, WY
  • Average rainfall days in September: 8 days

The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is November (6 days).

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Average snowfall in September
Fort Bridger, WY

Average snowfall in September - Fort Bridger, WY
  • Average snowfall in September: 0.43"

The month with the highest snowfall is March (8.78").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
Fort Bridger, WY

Average snowfall days in September - Fort Bridger, WY
  • Average snowfall days in September: 0.7 days

The month with the highest number of snowfall days is March (15.1 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in September /
Average sunshine in September
Fort Bridger, WY

Average daylight in September / Average sunshine in September - Fort Bridger, WY
  • Average daylight in September: 12h and 28min

The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 15min).

  • Average sunshine in September: 10h and 30min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

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Average sunshine days in September
Fort Bridger, WY

Average sunshine days in September - Fort Bridger, WY
  • Average sunshine days in September: 18.8 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is April (9.4 days).

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Average UV index in September
Fort Bridger, WY

Average UV index in September - Fort Bridger, WY
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in September
Fort Bridger, WY

Average cloud cover in September - Fort Bridger, WY
  • Average cloud cover in September: 13

The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 12).

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Average visibility in September
Fort Bridger, WY

Average visibility in September - Fort Bridger, WY
  • Average visibility in September: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

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