September weather forecastElroy, WI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Elroy, Wisconsin, with an average temperature varying between 71.1°F (21.7°C) and 51.3°F (10.7°C).Temperature
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a warm 78.1°F (25.6°C) to a pleasant 71.1°F (21.7°C). During September nights, Elroy records an average temperature of 51.3°F (10.7°C).Humidity
In Elroy, the average relative humidity in September is 80%.Rainfall
In Elroy, during September, the rain falls for 10.5 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 114.3 rainfall days, and 16.1" (409mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Elroy is 12h and 29min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:36 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:43 pm CDT.
Sunshine
In September, the average sunshine in Elroy is 8.9h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 3 suggests these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Elroy, WI
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (21.9°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure in September
Elroy, WI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Elroy, WI
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Elroy, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Elroy, WI
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Elroy, WI
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Elroy, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Elroy, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Elroy, WI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Elroy, WI
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in September
Elroy, WI
- Average UV index in September: 3
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
Elroy, WI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Elroy, WI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, July, August and December (5mi).
