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United StatesThe weather in September in Wisconsin
It's warm in September in Wisconsin with an average temperature of 23°C. Temperatures this month range from a low of 19°C to a high of 26°C. At night, you can expect temperatures between 9°C and 16°C.
Looking for great weather? September is a good time to be in Wisconsin. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Wisconsin, United States. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 35°C in 2023, Wisconsin reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 8°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 24°C.
Rainfall amount
In September, there is an average of 86 mm of precipitation, spread over 12 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in September for Wisconsin
Click on any day in September to get detailed info about the usual weather on that day in Wisconsin. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Wisconsin | New York | |
|---|---|---|
| Average temperature | 23°C | 27°C |
| Max. temperature | 26°C | 31°C |
| Min. temperature | 9°C | -5°C |
| Total precipitation | 86 mm | 57 mm |
| Rainy days | 12 days | 9 days |
Start of September
The month of September starts in Wisconsin with warm temps, averaging around 25°C during the day and nights around 15°C.
Mid September
By mid-September, daytime temps drop to around 24°C, with nights around 14°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of September
By the end of September, the average daytime temperature in Wisconsin is around 22°C, while nighttime temps are about 13°C. A shower might pop up, but overall, the weather will be dry and sunny.
Find affordable vacations to Wisconsin
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Wisconsin for all months and discover the best travel time
The climate in Wisconsin is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Wisconsin to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in September in Wisconsin, United States. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Wisconsin
Temperature in September in Wisconsin over the years
Precipitation charts
These charts show the average amount of precipitation in September in Wisconsin, United States. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Wisconsin
Total precipitation in September in Wisconsin over the years
Daily UV index in September in Wisconsin
This chart shows the average daily UV index in September in Wisconsin, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Wisconsin
Have you been to Wisconsin in September?
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Average weather in Wisconsin by month
Click on a month below to see detailed weather info for Wisconsin. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.