August weather forecastBrill, WI
August
Weather in August
The last month of the summer, August, is another warm month in Brill, Wisconsin, with an average temperature fluctuating between 76.5°F (24.7°C) and 56.7°F (13.7°C).Temperature
Brill experiences an average high-temperature of a still moderately hot 76.5°F (24.7°C) in August, subtly different from July's 78.4°F (25.8°C). Throughout the month of August, Brill observes an average nighttime temperature of 56.7°F (13.7°C).Humidity
The average relative humidity in August is 79%.Rainfall
In Brill, during August, the rain falls for 14.3 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Brill, Wisconsin, during the entire year, the rain falls for 128.9 days and collects up to 23.46" (596mm) of precipitation.Snowfall
In Brill, snow does not fall in June through September.Daylight
In August, the average length of the day is 14h and 4min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:34 pm. On the last day of August, sunrise is at 6:27 am and sunset at 7:45 pm CDT.
Sunshine
In Brill, the average sunshine in August is 9.1h.UV index
In Brill, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 4 in August translates into the following instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. 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 August
Brill, WI
- Average high temperature in August: 76.5°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in August: 56.7°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (5°F).
Average pressure in August
Brill, WI
- Average pressure in August: 29.94"Hg
The month with the highest atmospheric pressure is February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Brill, WI
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in August
Brill, WI
- Average humidity in August: 79%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (76%).
Average rainfall in August
Brill, WI
- Average rainfall in August: 2.24"
The wettest month (with the highest rainfall) is June (3.5").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in August
Brill, WI
- Average rainfall days in August: 14.3 days
The month with the highest number of rainy days is June (18.2 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in August
Brill, WI
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Brill, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Brill, WI
- Average daylight in August: 14h and 6min
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 August: 9h and 6min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in August
Brill, WI
- Average sunshine days in August: 14.3 days
The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is June (9.7 days).
Average UV index in August
Brill, WI
- Average UV index in August: 4
The months with the highest UV index are May, June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in August
Brill, WI
- Average cloud cover in August: 38
The months with the most cloud cover are January and February (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in August
Brill, WI
- Average visibility in August: 5mi
The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January, February and December (4mi).





