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
Whitewater's transition into September involves a gentle shift in temperature, receding from a moderately hot 77.5°F (25.3°C) in August to a pleasant 71.8°F (22.1°C). Whitewater's average low-temperature during September nights is observed to be a cool 52.7°F (11.5°C).Humidity
In Whitewater, Wisconsin, the average relative humidity in September is 81%.Rainfall
In Whitewater, during September, the rain falls for 11.5 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 133.6 rainfall days, and 20.16" (512mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Whitewater, Wisconsin, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:37 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In Whitewater, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures 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?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Whitewater have in September?
What is the UV index intensity in September?
Average temperature in September
Whitewater, WI
- Average high temperature in September: 71.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in September
Whitewater, WI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Whitewater, WI
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Whitewater, WI
- Average humidity in September: 81%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Whitewater, WI
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is June (2.87").
The driest months (with the least rainfall) are January, February and December (0.83").
Average rainfall days in September
Whitewater, WI
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Whitewater, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Whitewater, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Whitewater, 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 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Whitewater, WI
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Whitewater, WI
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Whitewater, WI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in September
Whitewater, WI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Whitewater, Wisconsin, USA
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