September weather forecast
Menasha, WI

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Weather in September

September signals the end of summer and the beginning of fall in Menasha, Wisconsin. The gradual dip in temperature from a high of 77.4°F (25.2°C) in August to a comfortable 70.2°F (21.2°C) sets the stage for autumnal colors. With the hues of fall setting in, sunshine hours and UV index start to recede. The mellow winds and decreased pressure hint at the upcoming winter. The climatic changes in September weather pave the way for a much cooler and crispier October.

Temperature

September ushers in a minute temperature change, with average high-temperatures reducing from August's warm 77.4°F (25.2°C) to a pleasant 70.2°F (21.2°C). Throughout the month of September, the nighttime temperature in Menasha, Wisconsin, dips to an average of 52°F (11.1°C).

Humidity

In September, the average relative humidity is 79%.

Rainfall

In September, in Menasha, Wisconsin, the rain falls for 12.1 days. Throughout September, 1.81" (46mm) of precipitation is accumulated. Throughout the year, there are 131.1 rainfall days, and 24.45" (621mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in September in Menasha, Wisconsin, is 12h and 30min.
On the first day of September, sunrise is at 6:17 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:35 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September in Menasha is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 3 in September translates into these instructions:
Guard yourself - Avoiding sunburn is suggested. To guard against the harmful effects of the Sun, minimize exposure during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

What is the usual temperature for Menasha in September?

An average high-temperature, in September, in Menasha, is 70.2°F (21.2°C) and the average low-temperature is 52°F (11.1°C).

What is the average humidity in September in Menasha?

The average relative humidity in September in Menasha, Wisconsin, is 79%.

How many days does it rain in September in Menasha?

In Menasha, in September, it is raining for 12.1 days, with typically 1.81" (46mm) of accumulated precipitation.

When it does not snow in Menasha?

June through September are months without snowfall.

Does it snow in Menasha in September?

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

How many hours of daylight does Menasha have in September?

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

When is the sunrise / sunset in September in Menasha?

In September, on the first day of the month, sunrise is at 6:17 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:35 pm CDT.

How many hours of sunshine does Menasha have in September?

The average sunshine duration in September in Menasha is 8.5h.

What is the UV index intensity in September in Menasha?

In Menasha, Wisconsin, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
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
Menasha, WI

Average temperature in September - Menasha, WI
  • Average high temperature in September: 70.2°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (21.9°F).

  • Average low temperature in September: 52°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

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Average pressure in September
Menasha, WI

Average pressure in September - Menasha, WI
  • Average pressure in September: 30.02"Hg

The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in September
Menasha, WI

Average wind speed in September - Menasha, WI
  • Average wind speed in September: 7.9mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity in September
Menasha, WI

Average humidity in September - Menasha, WI
  • Average humidity in September: 79%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in September
Menasha, WI

Average rainfall in September - Menasha, WI
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is February (1.06").

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Average rainfall days in September
Menasha, WI

Average rainfall days in September - Menasha, WI
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (3.9 days).

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Average snowfall in September
Menasha, WI

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

The month with the highest snowfall is January (5.79").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Menasha, WI

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

The month with the highest number of snowfall days is January (14.2 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
Menasha, WI

Average daylight in September / Average sunshine in September - Menasha, 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: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in September
Menasha, WI

Average sunshine days in September - Menasha, WI
  • Average sunshine days in September: 16.4 days

The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is April (11.8 days).

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Average UV index in September
Menasha, WI

Average UV index in September - Menasha, WI
  • Average UV index in September: 3

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in September
Menasha, WI

Average cloud cover in September - Menasha, WI
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in September
Menasha, WI

Average visibility in September - Menasha, WI
  • Average visibility in September: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).

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Menasha, Wisconsin, USA

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