August weather forecastSun Prairie, WI
August
Weather in August
August weather in Sun Prairie, Wisconsin, indicates the last leg of the summer season, still maintaining a high level of warmth but showing early signs of subsiding. Compared to the high temperatures in July, August's climatic pattern displays a slight reduction, with temperatures hitting up to 77.2°F (25.1°C). As school holidays come to an end, there is generally a rush of last-minute summer activities. Occasional rains are commonplace, bringing about fresh and cool relief from the summer days.Temperature
August's commencement is accompanied by an average high-temperature of a still warm 77.2°F (25.1°C), diverging marginally from July's 78.6°F (25.9°C). August nights experience a consistent temperature drop to a refreshing 59.5°F (15.3°C).Humidity
In Sun Prairie, Wisconsin, the average relative humidity in August is 82%.Rainfall
In Sun Prairie, in August, during 13.2 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Sun Prairie, during the entire year, the rain falls for 138.5 days and collects up to 26.42" (671mm) of precipitation.Snowfall
In Sun Prairie, Wisconsin, snow does not fall in May through September.Daylight
In Sun Prairie, the average length of the day in August is 13h and 54min.On the first day of the month, sunrise is at 5:48 am and sunset at 8:18 pm. On the last day of August, sunrise is at 6:20 am and sunset at 7:33 pm CDT.
Sunshine
The average sunshine in August in Sun Prairie is 9.8h.UV index
The months with the highest UV index in Sun Prairie are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 5 in August translates into this advice:
Prioritize safety - Recommendations to avert sunburn are shared. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. 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 August
Sun Prairie, WI
- Average high temperature in August: 77.2°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 (23.4°F).
- Average low temperature in August: 59.5°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in August
Sun Prairie, WI
- Average pressure in August: 29.97"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Sun Prairie, WI
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in August
Sun Prairie, WI
- Average humidity in August: 82%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in August
Sun Prairie, WI
- Average rainfall in August: 2.13"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in August
Sun Prairie, WI
- Average rainfall days in August: 13.2 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in August
Sun Prairie, WI
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Sun Prairie, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Sun Prairie, WI
- Average daylight in August: 13h and 54min
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 0min).
- Average sunshine in August: 9h and 48min
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 18min).
Average sunshine days in August
Sun Prairie, WI
- Average sunshine days in August: 15.4 days
The month with the most sunshine days is December (16.8 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in August
Sun Prairie, WI
- Average UV index in August: 5
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 August
Sun Prairie, WI
- Average cloud cover in August: 33
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in August
Sun Prairie, WI
- Average visibility in August: 5mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
