September weather forecastJohnson Creek, WI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Johnson Creek, Wisconsin, with an average temperature varying between 52°F (11.1°C) and 70.9°F (21.6°C).Temperature
A mild shift in the average high-temperature occurs in September, reducing from a warm 77.5°F (25.3°C) in August to a pleasant 70.9°F (21.6°C). Throughout September, Johnson Creek registers a consistent average low-temperature of 52°F (11.1°C).Humidity
In September, the average relative humidity in Johnson Creek is 81%.Rainfall
In September, in Johnson Creek, the rain falls for 9.8 days. Throughout September, 0.91" (23mm) of precipitation is accumulated. Throughout the year, there are 113.9 rainfall days, and 11.57" (294mm) of precipitation is accumulated.Snowfall
In Johnson Creek, snow does not fall in June through September.Daylight
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 7:29 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:37 pm CDT.
Sunshine
The average sunshine in September in Johnson Creek, Wisconsin, is 8.6h.UV index
In Johnson Creek, the average daily maximum UV index in September is 3. 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: A maximum daily UV index of 3 during September morphs into the following directions:
Prioritize safety - Recommendations to avert sunburn are shared. To protect against the Sun's most potent rays, avoid direct exposure around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Johnson Creek, WI
- Average high temperature in September: 70.9°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 (23.7°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in September
Johnson Creek, WI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Johnson Creek, WI
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Johnson Creek, WI
- Average humidity in September: 81%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Johnson Creek, WI
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is July (1.54").
The driest months (with the least rainfall) are February and December (0.47").
Average rainfall days in September
Johnson Creek, WI
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Johnson Creek, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Johnson Creek, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Johnson Creek, WI
- Average daylight in September: 12h and 30min
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 36min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Johnson Creek, WI
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (12.4 days).
Average UV index in September
Johnson Creek, 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
Johnson Creek, WI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July, August and September (Cloud cover 34).
Average visibility in September
Johnson Creek, 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).
