September weather forecast
Shoshoni, WY

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Weather in September

The first month of the autumn, September, is also an agreeable month in Shoshoni, Wyoming, with an average temperature ranging between min 52.3°F (11.3°C) and max 73°F (22.8°C).

Temperature

The transition into September indicates a reduction in the average high-temperature, down to a pleasant 73°F (22.8°C) from August's warm 82.6°F (28.1°C). Shoshoni's average low-temperature in the month of September is recorded at a fresh 52.3°F (11.3°C).

Humidity

The average relative humidity in September is 37%.

Rainfall

In September, the rain falls for 10.3 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. Throughout the year, there are 115.2 rainfall days, and 11.26" (286mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.91" (23mm) of snow. In Shoshoni, during the entire year, snow falls for 52.8 days and aggregates up to 26.02" (661mm) of snow.

Daylight

In Shoshoni, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:37 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:09 am and sunset at 6:54 pm MDT.

Sunshine

In September, the average sunshine is 10.7h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In September, a regular UV index of 4 translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.

Frequently asked questions

What is the usual temperature for Shoshoni in September?

September temperatures vary between a high-temperature of 73°F (22.8°C) and a low-temperature of 52.3°F (11.3°C).

What is the average humidity in September?

In September, the average relative humidity is 37%.

How many days does it rain in September?

In Shoshoni, during September, the rain falls for 10.3 days and regularly aggregates up to 0.94" (24mm) of precipitation.

When does it start snowing?

September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.91" (23mm) of snow.

How many hours of daylight does Shoshoni have in September?

The average day length in September is 12h and 29min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:37 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:54 pm MDT.

How long on average sun shines in September?

In Shoshoni, the average sunshine duration in September is 10.7h.

How high is the UV index in September in Shoshoni?

In Shoshoni, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Shoshoni, WY

Average temperature in September - Shoshoni, WY
  • Average high temperature in September: 73°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (28.4°F).

  • Average low temperature in September: 52.3°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

Average pressure in September
Shoshoni, WY

Average pressure in September - Shoshoni, WY
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Shoshoni, WY

Average wind speed in September - Shoshoni, WY
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is January (5.4mph).

Average humidity in September
Shoshoni, WY

Average humidity in September - Shoshoni, WY
  • Average humidity in September: 37%

The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (33%).

Average rainfall in September
Shoshoni, WY

Average rainfall in September - Shoshoni, WY
  • Average rainfall in September: 0.94"

The wettest month (with the highest rainfall) is May (2.17").
The driest month (with the least rainfall) is January (0.39").

Average rainfall days in September
Shoshoni, WY

Average rainfall days in September - Shoshoni, WY
  • Average rainfall days in September: 10.3 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (4.4 days).

Average snowfall in September
Shoshoni, WY

Average snowfall in September - Shoshoni, WY
  • Average snowfall in September: 0.91"

The month with the highest snowfall is April (5").
The months with the least snowfall are June, July and August (0").

Average snowfall days in September
Shoshoni, WY

Average snowfall days in September - Shoshoni, WY
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is February (9.9 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in September /
Average sunshine in September
Shoshoni, WY

Average daylight in September / Average sunshine in September - Shoshoni, 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 0min).

  • Average sunshine in September: 10h and 4min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).

Average sunshine days in September
Shoshoni, WY

Average sunshine days in September - Shoshoni, WY
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is May (9.6 days).

Average UV index in September
Shoshoni, WY

Average UV index in September - Shoshoni, 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, November and December (UV index 2).

Average cloud cover in September
Shoshoni, WY

Average cloud cover in September - Shoshoni, WY
  • Average cloud cover in September: 14

The month with the most cloud cover is February (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in September
Shoshoni, WY

Average visibility in September - Shoshoni, 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).

Shoshoni, Wyoming, USA

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