September weather forecast and climate
Rosendale, WI

Weather in September

September, the first month of the autumn, in Rosendale, is still a pleasant month, with average temperature ranging between max 70.2°F (21.2°C) and min 51.8°F (11°C).

Temperature

In Rosendale, the average high-temperature marginally drops, from a warm 77°F (25°C) in August, to an agreeable 70.2°F (21.2°C). In September, in Rosendale, Wisconsin, the average low-temperature is 51.8°F (11°C).

Humidity

The average relative humidity in Rosendale, Wisconsin, is 81%.

Rainfall

In Rosendale, during 12.1 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, there are 139.7 rainfall days, and 26.85" (682mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Rosendale, the average length of the day is 12.5h.

Sunshine

The average sunshine in Rosendale is 8.7h.

UV index

In Rosendale, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 3 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in September in Rosendale?

In Rosendale, Wisconsin, the average relative humidity in September is 81%.

How many days does it rain in September in Rosendale?

In Rosendale, during September, the rain falls for 12.1 days and regularly aggregates up to 2.17" (55mm) of precipitation.

When it does not snow in Rosendale?

June through September are months without snowfall in Rosendale, Wisconsin.

Does it snow in Rosendale in September?

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

How many hours of daylight does Rosendale have in September?

In September, the average length of the day in Rosendale is 12.5h.

How long on average sun shines in September in Rosendale?

In Rosendale, Wisconsin, the average sunshine in September is 8.7h.

What is the UV index intensity in September in Rosendale?

In September, the average daily maximum UV index in Rosendale, Wisconsin, is 3. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV rays.

Average temperature in September
Rosendale, WI

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

The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in September: 51.8°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).

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Average pressure in September
Rosendale, WI

Average pressure in September - Rosendale, WI
  • Average pressure in September: 30.03"

Months with the highest atmospheric pressure are January and February (30.1").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in September
Rosendale, WI

Average wind speed in September - Rosendale, WI
  • Average wind speed in September: 7.8mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in September
Rosendale, WI

Average humidity in September - Rosendale, WI
  • Average humidity in September: 81%

Months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in September
Rosendale, WI

Average rainfall in September - Rosendale, WI
  • Average rainfall in September: 2.17"

The wettest months (with the highest rainfall) are May and June (3.39").
The driest month (with the least rainfall) is February (1.14").

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Average rainfall days in September
Rosendale, WI

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

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in September
Rosendale, WI

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

The month with the highest snowfall is January (5.24").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Rosendale, WI

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

The month with the highest number of snowfall days is January (15.3 days).
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
Rosendale, WI

Average daylight in September / Average sunshine in September - Rosendale, WI
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 8.7h

The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 3.4h).

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Average sunshine days in September
Rosendale, WI

Average sunshine days in September - Rosendale, WI
  • Average sunshine days in September: 16 days

The month with the most sunshine days is September (16 days).
The month with the least sunshine days is June (10.6 days).

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Average UV index in September
Rosendale, WI

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

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in September
Rosendale, WI

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

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in September
Rosendale, WI

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

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

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