September weather forecastSpencer, WI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Spencer, Wisconsin, with an average temperature ranging between min 50°F (10°C) and max 68.4°F (20.2°C).Temperature
With the arrival of September, Spencer notices a mild change in the average high-temperature, sliding from August's moderately hot 75.6°F (24.2°C) to a pleasant 68.4°F (20.2°C). Spencer usually reports an average low-temperature of 50°F (10°C) during the month of September.Humidity
In September, the average relative humidity is 80%.Rainfall
In September, the rain falls for 12.4 days. Throughout September, 1.73" (44mm) of precipitation is accumulated. In Spencer, during the entire year, the rain falls for 132.1 days and collects up to 23.23" (590mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:24 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:43 pm CDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Spencer, WI
- Average high temperature in September: 68.4°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in September
Spencer, WI
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Spencer, WI
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Spencer, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Spencer, WI
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Spencer, WI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (3.4 days).
Average snowfall in September
Spencer, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Spencer, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Spencer, WI
- Average daylight in September: 12h and 30min
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 18min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Spencer, WI
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (16 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in September
Spencer, 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, February, November and December (UV index 1).
Average cloud cover in September
Spencer, WI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Spencer, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).
