September weather forecast
Antelope, WY

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Weather in September

September, the first month of the autumn in Antelope, is still a pleasant month, with an average temperature fluctuating between 48.4°F (9.1°C) and 69.3°F (20.7°C).

Temperature

The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's warm 77.7°F (25.4°C) to an agreeable 69.3°F (20.7°C). In September, Antelope experiences a temperature dip to an average of 48.4°F (9.1°C) at night.

Humidity

In September, the average relative humidity in Antelope is 38%.

Rainfall

In Antelope, in September, during 6.5 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 78.2 rainfall days, and 7.48" (190mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Antelope are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.7 snowfall days, it receives 0.51" (13mm) of snow. In Antelope, during the entire year, snow falls for 58.7 days and aggregates up to 24.72" (628mm) of snow.

Daylight

In Antelope, Wyoming, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:49 am and sunset at 7:54 pm. On the last day of September, in Antelope, Wyoming, sunrise is at 7:18 am and sunset at 7:04 pm MDT.

Sunshine

In September, the average sunshine is 10.4h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The UV index of 4 in September translates into these instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

What are the temperatures in Antelope in September?

In September, in Antelope, the average high-temperature is 69.3°F (20.7°C), and the average low-temperature is 48.4°F (9.1°C).

What is the average humidity in September in Antelope?

In Antelope, the average relative humidity in September is 38%.

How much does it rain in Antelope in September?

In Antelope, Wyoming, during September, the rain falls for 6.5 days and regularly aggregates up to 0.63" (16mm) of precipitation.

When does it start snowing in Antelope?

September is the first month it typically snows in Antelope. Throughout September, in the average 0.7 snowfall days, it receives 0.51" (13mm) of snow.

How many hours of daylight does Antelope have in September?

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

When are sunrise and sunset in September in Antelope?

In September, on the first day of the month, sunrise is at 6:49 am and sunset at 7:54 pm. On the last day of the month, in Antelope, sunrise is at 7:18 am and sunset at 7:04 pm MDT.

How many hours of sunshine does Antelope have in September?

In September, the average sunshine duration in Antelope is 10.4h.

What is the UV index reading in September in Antelope?

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
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
Antelope, WY

Average temperature in September - Antelope, WY
  • Average high temperature in September: 69.3°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (26.6°F).

  • Average low temperature in September: 48.4°F

The month with the highest average low temperature is July (55.9°F).
The coldest months (with the lowest average low temperature) are January and December (12°F).

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Average pressure in September
Antelope, WY

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

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in September
Antelope, WY

Average wind speed in September - Antelope, WY
  • Average wind speed in September: 9.2mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in September
Antelope, WY

Average humidity in September - Antelope, 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%).

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Average rainfall in September
Antelope, WY

Average rainfall in September - Antelope, WY
  • Average rainfall in September: 0.63"

The wettest month (with the highest rainfall) is May (1.18").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in September
Antelope, WY

Average rainfall days in September - Antelope, WY
  • Average rainfall days in September: 6.5 days

The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is November (3.5 days).

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Average snowfall in September
Antelope, WY

Average snowfall in September - Antelope, WY
  • Average snowfall in September: 0.51"

The month with the highest snowfall is March (5.04").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
Antelope, WY

Average snowfall days in September - Antelope, WY
  • Average snowfall days in September: 0.7 days

The month with the highest number of snowfall days is February (10.4 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
Antelope, WY

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 10h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).

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Average sunshine days in September
Antelope, WY

Average sunshine days in September - Antelope, WY
  • Average sunshine days in September: 19.3 days

The months with the most sunshine days are January and October (22.3 days).
The month with the least sunshine days is July (15.9 days).

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Average UV index in September
Antelope, WY

Average UV index in September - Antelope, 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).

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Average cloud cover in September
Antelope, WY

Average cloud cover in September - Antelope, WY
  • Average cloud cover in September: 13

The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 12).

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Average visibility in September
Antelope, WY

Average visibility in September - Antelope, 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).

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Antelope, Wyoming, USA

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