September weather forecast
Thiensville, WI

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Weather in September

The first month of the autumn, September, is also an agreeable month in Thiensville, Wisconsin, with an average temperature fluctuating between 56.5°F (13.6°C) and 69.8°F (21°C).

Temperature

In September, the average high-temperature marginally drops from a moderately hot 76.3°F (24.6°C) in August to a pleasant 69.8°F (21°C). An average low-temperature of 56.5°F (13.6°C) is observed during September nights in Thiensville, Wisconsin.

Humidity

The average relative humidity in September is 78%.

Rainfall

In Thiensville, in September, it is raining for 12.4 days, with typically 1.97" (50mm) of accumulated precipitation. In Thiensville, Wisconsin, during the entire year, the rain falls for 136.6 days and collects up to 21.69" (551mm) of precipitation.

Snowfall

May through September are months without snowfall in Thiensville.

Daylight

In Thiensville, Wisconsin, the average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:16 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:34 pm CDT.

Sunshine

In Thiensville, the average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in September in Thiensville is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 4 during September leads to these advisories:
Take necessary precautions - Protection from skin and eye injury is mandatory. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Thiensville?

An average high-temperature, in September, in Thiensville, is 69.8°F (21°C) and the average low-temperature is 56.5°F (13.6°C).

What is the average humidity in September in Thiensville?

In Thiensville, Wisconsin, the average relative humidity in September is 78%.

How much does it rain in Thiensville in September?

In Thiensville, in September, it is raining for 12.4 days, with typically 1.97" (50mm) of accumulated precipitation.

When it does not snow in Thiensville?

May through September are months without snowfall in Thiensville.

Does it snow in Thiensville in September?

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

How many hours of daylight does Thiensville have in September?

The average day length in September in Thiensville is 12h and 29min.

When is the sunrise / sunset in September in Thiensville?

On the first day of September, sunrise is at 6:16 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:34 pm CDT.

How many hours of sunshine does Thiensville have in September?

In Thiensville, Wisconsin, the average sunshine duration in September is 9.2h.

How high is the UV index in September in Thiensville?

In Thiensville, Wisconsin, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat 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
Thiensville, WI

Average temperature in September - Thiensville, WI
  • Average high temperature in September: 69.8°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (25.9°F).

  • Average low temperature in September: 56.5°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

Average pressure in September
Thiensville, WI

Average pressure in September - Thiensville, WI
  • Average pressure in September: 30.03"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 (29.92"Hg).

Average wind speed in September
Thiensville, WI

Average wind speed in September - Thiensville, WI
  • Average wind speed in September: 8.6mph

The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

Average humidity in September
Thiensville, WI

Average humidity in September - Thiensville, WI
  • Average humidity in September: 78%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are October and November (76%).

Average rainfall in September
Thiensville, WI

Average rainfall in September - Thiensville, WI
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is July (2.8").
The driest months (with the least rainfall) are February and December (0.94").

Average rainfall days in September
Thiensville, WI

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

The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in September
Thiensville, WI

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

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Thiensville, WI

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

The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Thiensville, 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 0min).

  • Average sunshine in September: 9h and 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in September
Thiensville, WI

Average sunshine days in September - Thiensville, WI
  • Average sunshine days in September: 15 days

The month with the most sunshine days is December (16.8 days).
The month with the least sunshine days is July (11.9 days).

Average UV index in September
Thiensville, WI

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

Average cloud cover in September
Thiensville, WI

Average cloud cover in September - Thiensville, WI
  • Average cloud cover in September: 29

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in September
Thiensville, WI

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

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

Thiensville, Wisconsin, USA

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