September weather forecast
Chetek, WI

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Weather in September

The first month of the autumn, September, is still a pleasant month in Chetek, Wisconsin, with an average temperature fluctuating between 68.9°F (20.5°C) and 49.6°F (9.8°C).

Temperature

The transition into September subtly indicates a reduction in the average high-temperature, down to a pleasant 68.9°F (20.5°C) from August's warm 76.6°F (24.8°C). During the month of September, an average temperature of 49.6°F (9.8°C) is noted during the nights.

Humidity

In September, the average relative humidity is 80%.

Rainfall

In Chetek, during September, the rain falls for 12.4 days and regularly aggregates up to 1.93" (49mm) of precipitation. Throughout the year, in Chetek, there are 137.1 rainfall days, and 24.72" (628mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in September is 12h and 31min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:43 pm. On the last day of September, in Chetek, Wisconsin, sunrise is at 7:04 am and sunset at 6:48 pm CDT.

Sunshine

In Chetek, the average sunshine in September is 8.3h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 4 in September transforms into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

What is the average September temperature in Chetek?

In September, in Chetek, the average high-temperature is 68.9°F (20.5°C), and the average low-temperature is 49.6°F (9.8°C).

What is the average humidity in September in Chetek?

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

How much does it rain in Chetek in September?

In Chetek, Wisconsin, in September, it is raining for 12.4 days, with typically 1.93" (49mm) of accumulated precipitation.

When it does not snow in Chetek?

June through September are months without snowfall in Chetek.

Does it snow in Chetek in September?

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

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

In September, the average day length in Chetek, Wisconsin, is 12h and 31min.

When is the sunrise / sunset in September in Chetek?

On the first day of September in Chetek, Wisconsin, sunrise is at 6:29 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:48 pm CDT.

How long on average sun shines in September in Chetek?

In Chetek, the average sunshine duration in September is 8.3h.

How high is the UV index in September in Chetek?

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes 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
Chetek, WI

Average temperature in September - Chetek, WI
  • Average high temperature in September: 68.9°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 (17.6°F).

  • Average low temperature in September: 49.6°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

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Average pressure in September
Chetek, WI

Average pressure in September - Chetek, WI
  • Average pressure in September: 30"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in September
Chetek, WI

Average wind speed in September - Chetek, WI
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is April (9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in September
Chetek, WI

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

The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in September
Chetek, WI

Average rainfall in September - Chetek, WI
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in September
Chetek, WI

Average rainfall days in September - Chetek, WI
  • Average rainfall days in September: 12.4 days

The month with the highest number of rainy days is June (19 days).
The month with the least rainy days is February (3.6 days).

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Average snowfall in September
Chetek, WI

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

The month with the highest snowfall is February (6.65").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Chetek, WI

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

The month with the highest number of snowfall days is January (18.8 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
Chetek, WI

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

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

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Average sunshine days in September
Chetek, WI

Average sunshine days in September - Chetek, WI
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is June (9.4 days).

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Average UV index in September
Chetek, WI

Average UV index in September - Chetek, 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 and December (UV index 1).

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Average cloud cover in September
Chetek, WI

Average cloud cover in September - Chetek, WI
  • Average cloud cover in September: 38

The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 35).

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Average visibility in September
Chetek, WI

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

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

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Chetek, Wisconsin, USA

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