September weather forecast
Mukwonago, WI

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Weather in September

September, the first month of the autumn in Mukwonago, is also an agreeable month, with an average temperature fluctuating between 53.6°F (12°C) and 71.8°F (22.1°C).

Temperature

September ushers in a minor alteration in Mukwonago's climate, with the average high-temperature moving from August's moderately hot 77.5°F (25.3°C) to a pleasant 71.8°F (22.1°C). Mukwonago witnesses an average low-temperature of 53.6°F (12°C) throughout the month of September.

Humidity

In Mukwonago, the average relative humidity in September is 80%.

Rainfall

In Mukwonago, during September, the rain falls for 13 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Mukwonago, during the entire year, the rain falls for 150.4 days and collects up to 28.43" (722mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Mukwonago, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:18 am and sunset at 7:27 pm. On the last day of September, in Mukwonago, sunrise is at 6:50 am and sunset at 6:35 pm CDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

In September, the average daily maximum UV index in Mukwonago is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Mukwonago?

In September, the average high-temperature and low-temperature in Mukwonago are 71.8°F (22.1°C) and 53.6°F (12°C) respectively.

What is the average humidity in September in Mukwonago?

The average relative humidity in September is 80%.

How much does it rain in Mukwonago in September?

In Mukwonago, in September, during 13 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

When it does not snow in Mukwonago?

June through September are months without snowfall in Mukwonago.

Does it snow in Mukwonago in September?

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

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

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

When are sunrise and sunset in September in Mukwonago?

In September, on the first day of the month, sunrise is at 6:18 am and sunset at 7:27 pm. On the last day of the month, in Mukwonago, Wisconsin, sunrise is at 6:50 am and sunset at 6:35 pm CDT.

How long on average sun shines in September in Mukwonago?

The average sunshine duration in September in Mukwonago is 8.8h.

What is the UV index reading in September in Mukwonago?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Mukwonago, WI

Average temperature in September - Mukwonago, WI
  • Average high temperature in September: 71.8°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in September: 53.6°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

Average pressure in September
Mukwonago, WI

Average pressure in September - Mukwonago, WI
  • Average pressure in September: 30.03"Hg

The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in September
Mukwonago, WI

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

The windiest months (with the highest average wind speed) are January, February and April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in September
Mukwonago, WI

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

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September
Mukwonago, WI

Average rainfall in September - Mukwonago, WI
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is February (1.22").

Average rainfall days in September
Mukwonago, WI

Average rainfall days in September - Mukwonago, WI
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (5.2 days).

Average snowfall in September
Mukwonago, WI

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

The month with the highest snowfall is January (5.08").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Mukwonago, WI

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

The month with the highest number of snowfall days is January (14 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Mukwonago, WI
  • 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: 8h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in September
Mukwonago, WI

Average sunshine days in September - Mukwonago, WI
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is November (15.9 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in September
Mukwonago, WI

Average UV index in September - Mukwonago, WI
  • Average UV index in September: 4

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

Average cloud cover in September
Mukwonago, WI

Average cloud cover in September - Mukwonago, WI
  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 32).

Average visibility in September
Mukwonago, WI

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

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

Mukwonago, Wisconsin, USA

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