Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a warm 76.6°F (24.8°C) to a pleasant 70.5°F (21.4°C). Whitehall records a consistent low-temperature of 50.7°F (10.4°C) during September nights.Humidity
In September, the average relative humidity is 80%.Rainfall
In Whitehall, during September, the rain falls for 13.1 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, there are 142.8 rainfall days, and 28.78" (731mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 30min.On the first day of September in Whitehall, Wisconsin, sunrise is at 6:29 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:47 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Whitehall in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Whitehall have in September?
When are sunrise and sunset in September in Whitehall?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Whitehall, WI
- Average high temperature in September: 70.5°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 (20.3°F).
- Average low temperature in September: 50.7°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (7°F).
Average pressure in September
Whitehall, WI
- Average pressure in September: 30.01"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).
Average wind speed in September
Whitehall, WI
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Whitehall, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in September
Whitehall, WI
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is June (4.69").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in September
Whitehall, WI
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is June (19 days).
The months with the least rainy days are January and February (3.6 days).
Average snowfall in September
Whitehall, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Whitehall, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Whitehall, WI
- Average daylight in September: 12h and 3min
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 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Whitehall, WI
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in September
Whitehall, 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, November and December (UV index 1).
Average cloud cover in September
Whitehall, WI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Whitehall, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, August, October and November (6mi).
The month with the lowest visibility is January (4mi).
Whitehall, Wisconsin, USA
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