September weather forecastNorma, WI
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Norma, Wisconsin, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 50.2°F (10.1°C).Temperature
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 76.8°F (24.9°C) in August to a pleasant 70°F (21.1°C). September witnesses an average nighttime temperature of 50.2°F (10.1°C) in Norma, Wisconsin.Humidity
The average relative humidity in September is 80%.Rainfall
In September, in Norma, the rain falls for 11.7 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. Throughout the year, in Norma, there are 127.8 rainfall days, and 25.67" (652mm) of precipitation is accumulated.Snowfall
In Norma, snow does not fall in June through September.Daylight
In Norma, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:28 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:47 pm CDT.
Sunshine
In Norma, the average sunshine in September is 8.4h.UV index
In Norma, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 4 during September translates into the following guidance:
Undertake protective steps - Recommendations to avoid sunburn are issued. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Norma, WI
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (19.4°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in September
Norma, 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
Norma, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Norma, WI
- Average humidity in September: 80%
The month with the highest relative humidity is February (92%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in September
Norma, WI
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Norma, WI
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in September
Norma, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.14").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Norma, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Norma, WI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 54min).
Average sunshine days in September
Norma, WI
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in September
Norma, 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
Norma, WI
- Average cloud cover in September: 38
The months with the most cloud cover are January and February (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Norma, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
