September weather forecastHewitt, WI
September
Weather in September
September, the first month of the autumn in Hewitt, is still a pleasant month, with an average temperature fluctuating between 50°F (10°C) and 68.9°F (20.5°C).Temperature
September indicates a minor shift in the average high-temperature, from August's warm 76.1°F (24.5°C) to a pleasant 68.9°F (20.5°C). During September nights, Hewitt witnesses a consistent average temperature of 50°F (10°C).Humidity
In September, the average relative humidity in Hewitt is 80%.Rainfall
In Hewitt, Wisconsin, in September, during 12.4 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. In Hewitt, during the entire year, the rain falls for 138.3 days and collects up to 25.12" (638mm) of precipitation.Snowfall
In Hewitt, snow does not fall in June through September.Daylight
The average length of the day in September in Hewitt is 12h and 30min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:36 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:42 pm CDT.
Sunshine
In September, the average sunshine in Hewitt is 8.5h.UV index
In Hewitt, Wisconsin, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 3 suggests this advice:
Exercise prevention - Warding off sunburn is urged. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hewitt, WI
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in September
Hewitt, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Hewitt, WI
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Hewitt, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Hewitt, WI
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Hewitt, WI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Hewitt, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.05").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hewitt, 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).
Average daylight in September /
Average sunshine in September
Hewitt, WI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Hewitt, WI
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in September
Hewitt, WI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Hewitt, WI
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Hewitt, WI
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, July and December (5mi).
