September weather forecast
Moose, WY

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Weather in September

In September, Moose transitions from the heat of summer to the chill of fall. Precipitation levels rise slightly to 1.97", signaling the onset of the coming changes. Daylight hours gradually decrease in anticipation of the approaching autumn season. The temperatures start declining, but the month is still warm and inviting. The changing foliage adds a new hue to the city, creating a picturesque landscape.

Temperature

Moose experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from a pleasant 70.3°F in August to a comfortable 62.1°F. Moose reports a steady low-temperature average of 37°F throughout September, revealing a large deviation from the daytime high.

Humidity

The average relative humidity in September in Moose, Wyoming, is 57%.

Rainfall

In Moose, during September, the rain falls for 12.2 days and regularly aggregates up to 1.97" of precipitation. Throughout the year, there are 116.8 rainfall days, and 27.95" of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 1.5 snowfall days, it receives 1.93" of snow. Throughout the year, in Moose, Wyoming, there are 130.7 snowfall days, and 137.48" of snow is accumulated.

Daylight

In Moose, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:46 am and sunset at 7:59 pm. On the last day of September, in Moose, sunrise is at 7:19 am and sunset at 7:06 pm MDT.

Sunshine

In September, the average sunshine in Moose is 10h.

UV index

The average daily maximum UV index in September in Moose, Wyoming, is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 2 during September translates into the following guidance:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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FAQ

What are September temperatures in Moose?

In Moose, in September, the average high-temperature is 62.1°F, and the average low-temperature is 37°F.

What is the average humidity in September in Moose?

In Moose, the average relative humidity in September is 57%.

How much does it rain in Moose in September?

In Moose, Wyoming, in September, during 12.2 rainfall days, 1.97" of precipitation is typically accumulated.

When does it start to snow in Moose?

September is the first month it typically snows in Moose, Wyoming. Throughout September, in the average 1.5 snowfall days, it receives 1.93" of snow.

How many hours of daylight does Moose have in September?

In September, the average day length in Moose, Wyoming, is 12h and 29min.

When is the sunrise / sunset in September in Moose?

On the first day of September in Moose, Wyoming, sunrise is at 6:46 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:06 pm MDT.

How long on average sun shines in September in Moose?

In Moose, the average sunshine duration in September is 10h.

What is the UV index intensity in September in Moose?

In Moose, Wyoming, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Moose, WY

Average temperature in September - Moose, WY
  • Average high temperature in September: 62.1°F

The warmest month (with the highest average high temperature) is July (72°F).
The month with the lowest average high temperature is December (21°F).

  • Average low temperature in September: 37°F

The month with the highest average low temperature is July (43.9°F).
The coldest month (with the lowest average low temperature) is December (4.1°F).

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Average pressure in September
Moose, WY

Average pressure in September - Moose, WY
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Moose, WY

Average wind speed in September - Moose, WY
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.5mph).

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Average humidity in September
Moose, WY

Average humidity in September - Moose, WY
  • Average humidity in September: 57%

The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (50%).

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Average rainfall in September
Moose, WY

Average rainfall in September - Moose, WY
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is February (3.23").
The driest month (with the least rainfall) is August (1.42").

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Average rainfall days in September
Moose, WY

Average rainfall days in September - Moose, WY
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is May (16.2 days).
The months with the least rainy days are January and February (3.9 days).

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Average snowfall in September
Moose, WY

Average snowfall in September - Moose, WY
  • Average snowfall in September: 1.93"

The month with the highest snowfall is February (25.94").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
Moose, WY

Average snowfall days in September - Moose, WY
  • Average snowfall days in September: 1.5 days

The month with the highest number of snowfall days is December (21.7 days).
The month with the least snowfall days is July (0 days).

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

Average daylight in September / Average sunshine in September - Moose, WY
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 10h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

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Average sunshine days in September
Moose, WY

Average sunshine days in September - Moose, WY
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is July (15.6 days).
The month with the least sunshine days is April (7 days).

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Average UV index in September
Moose, WY

Average UV index in September - Moose, WY
  • Average UV index in September: 2

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).

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Average cloud cover in September
Moose, WY

Average cloud cover in September - Moose, WY
  • Average cloud cover in September: 20

The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 15).

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Average visibility in September
Moose, WY

Average visibility in September - Moose, WY
  • Average visibility in September: 6mi

The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January and February (2mi).

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Moose, Wyoming, USA

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