September weather forecast
Alma, WI

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Weather in September

The first month of the autumn, September, is still a pleasant month in Alma, Wisconsin, with an average temperature varying between 50.9°F (10.5°C) and 70.7°F (21.5°C).

Temperature

The onset of September results in a small decrease in the average high-temperature, moderately receding from a warm 77.5°F (25.3°C) in August to an agreeable 70.7°F (21.5°C). In Alma, an average nighttime temperature of 50.9°F (10.5°C) is expected during September.

Humidity

The average relative humidity in September in Alma is 80%.

Rainfall

In September, the rain falls for 12 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. In Alma, Wisconsin, during the entire year, the rain falls for 135.6 days and collects up to 25.79" (655mm) of precipitation.

Snowfall

In Alma, snow does not fall in June through September.

Daylight

The average length of the day in September in Alma, Wisconsin, is 12h and 30min.
On the first day of the month, sunrise is at 6:31 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:49 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index in Alma is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 4 during September translates into the following guidance:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

What is the average September temperature in Alma?

In September, the average high-temperature and low-temperature in Alma are 70.7°F (21.5°C) and 50.9°F (10.5°C) respectively.

What is the average humidity in September in Alma?

The average relative humidity in September in Alma, Wisconsin, is 80%.

How many days does it rain in September in Alma?

In September, in Alma, the rain falls for 12 days. Throughout September, 2.09" (53mm) of precipitation is accumulated.

When it does not snow in Alma?

In Alma, Wisconsin, snow does not fall in June through September.

Does it snow in Alma in September?

In Alma, Wisconsin, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Alma?

In September, the average day length in Alma, Wisconsin, is 12h and 30min.

What time are sunrise and sunset in September in Alma?

On the first day of September in Alma, Wisconsin, sunrise is at 6:31 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:49 pm CDT.

How long on average sun shines in September in Alma?

The average sunshine duration in September is 8.5h.

What is the UV index reading in September in Alma?

In Alma, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
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
Alma, WI

Average temperature in September - Alma, WI
  • Average high temperature in September: 70.7°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (20.5°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).

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Average pressure in September
Alma, WI

Average pressure in September - Alma, WI
  • Average pressure in September: 30.01"Hg

The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in September
Alma, WI

Average wind speed in September - Alma, WI
  • Average wind speed in September: 7.3mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

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Average humidity in September
Alma, WI

Average humidity in September - Alma, WI
  • Average humidity in September: 80%

The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in September
Alma, WI

Average rainfall in September - Alma, WI
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is June (4.49").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in September
Alma, WI

Average rainfall days in September - Alma, WI
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (3.2 days).

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Average snowfall in September
Alma, WI

Average snowfall in September - Alma, WI
  • Average snowfall in September: 0"

The month with the highest snowfall is February (7.01").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Alma, WI

Average snowfall days in September - Alma, WI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Alma, WI

Average daylight in September / Average sunshine in September - Alma, WI
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average sunshine days in September
Alma, WI

Average sunshine days in September - Alma, WI
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is June (9.3 days).

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Average UV index in September
Alma, WI

Average UV index in September - Alma, WI
  • 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, November and December (UV index 1).

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Average cloud cover in September
Alma, WI

Average cloud cover in September - Alma, WI
  • Average cloud cover in September: 36

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in September
Alma, WI

Average visibility in September - Alma, WI
  • Average visibility in September: 5mi

The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Alma, Wisconsin, USA

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