September weather forecast
Alcova, WY

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Weather in September

The first month of the autumn, September, is also an agreeable month in Alcova, Wyoming, with an average temperature fluctuating between 71.6°F (22°C) and 50.9°F (10.5°C).

Temperature

Alcova in September demonstrates a small temperature transition, adjusting from an average high of a moderately hot 80.8°F (27.1°C) in August to an agreeable 71.6°F (22°C). In the month of September, the average low-temperature in Alcova, Wyoming, usually rests at a cool 50.9°F (10.5°C).

Humidity

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

Rainfall

In Alcova, Wyoming, in September, during 6.9 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Alcova, during the entire year, the rain falls for 84.4 days and collects up to 8.78" (223mm) of precipitation.

Snowfall

Months with snowfall in Alcova, Wyoming, are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 58.3 snowfall days, and 29.33" (745mm) of snow is accumulated.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 6:32 am and sunset at 7:40 pm. On the last day of September, in Alcova, sunrise is at 7:03 am and sunset at 6:49 pm MDT.

Sunshine

In September, the average sunshine is 11h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 4 in September translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What is the temperature in September in Alcova?

In Alcova, in September, the average high-temperature is 71.6°F (22°C), and the average low-temperature is 50.9°F (10.5°C).

What is the average humidity in September in Alcova?

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

How much does it rain in Alcova in September?

In September, in Alcova, the rain falls for 6.9 days. Throughout September, 0.51" (13mm) of precipitation is accumulated.

When does it start snowing in Alcova?

September is the first month it typically snows in Alcova. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Alcova have in September?

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

When is the sunrise / sunset in September in Alcova?

In September, on the first day of the month, sunrise is at 6:32 am and sunset at 7:40 pm. On the last day of the month, in Alcova, Wyoming, sunrise is at 7:03 am and sunset at 6:49 pm MDT.

How many hours of sunshine does Alcova have in September?

In Alcova, the average sunshine duration in September is 11h.

What is the UV index intensity in September in Alcova?

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe 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
Alcova, WY

Average temperature in September - Alcova, WY
  • Average high temperature in September: 71.6°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (27.1°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is July (59.2°F).
The coldest months (with the lowest average low temperature) are January and December (13.5°F).

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Average pressure in September
Alcova, WY

Average pressure in September - Alcova, WY
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in September
Alcova, WY

Average wind speed in September - Alcova, WY
  • Average wind speed in September: 9.6mph

The windiest months (with the highest average wind speed) are January and November (11.1mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

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Average humidity in September
Alcova, WY

Average humidity in September - Alcova, WY
  • Average humidity in September: 38%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (35%).

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Average rainfall in September
Alcova, WY

Average rainfall in September - Alcova, WY
  • Average rainfall in September: 0.51"

The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is August (0.35").

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Average rainfall days in September
Alcova, WY

Average rainfall days in September - Alcova, WY
  • Average rainfall days in September: 6.9 days

The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is January (3.7 days).

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Average snowfall in September
Alcova, WY

Average snowfall in September - Alcova, WY
  • Average snowfall in September: 0.04"

The month with the highest snowfall is December (4.65").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Alcova, WY

Average snowfall days in September - Alcova, WY
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Alcova, 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 6min).

  • Average sunshine in September: 11h and 0min

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 6min).

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Average sunshine days in September
Alcova, WY

Average sunshine days in September - Alcova, WY
  • Average sunshine days in September: 19.9 days

The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is April (13.3 days).

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Average UV index in September
Alcova, WY

Average UV index in September - Alcova, WY
  • Average UV index in September: 4

The months with the highest UV index are July and August (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
Alcova, WY

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

The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in September
Alcova, WY

Average visibility in September - Alcova, 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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Alcova, Wyoming, USA

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