August weather forecastBrookfield, WI
August
Weather in August
August in Brookfield offers the last full month of summer before the onset of fall. While temperatures slightly retreat from July's peak, August still embodies the summer spirit. The usually sunny skies and long daylight hours favor outdoor activities and provide opportunities for summer sports. Refreshing breezes continue to moderate the climate, and the landscapes start to exhibit the first few signs of the approaching autumn. The weather in August harmonizes the charms of summer with the subtle whispers of the oncoming fall.Temperature
An average high-temperature of a still moderately hot 77°F (25°C) marks August, exhibiting a close resemblance to the conditions in July. An average nighttime temperature of 62.8°F (17.1°C) is recorded during August.Humidity
In August, the average relative humidity in Brookfield, Wisconsin, is 78%.Rainfall
In Brookfield, in August, during 14.3 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, there are 129.9 rainfall days, and 19.69" (500mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In August, the average length of the day is 13h and 53min.On the first day of August, sunrise is at 5:44 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:28 pm CDT.
Sunshine
With an average of 10.4h of sunshine, August has the most sunshine of the year.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 5 in August transforms into this advice:
Exercise prevention - Protecting skin and eyes from harm is required. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Brookfield, WI
- Average high temperature in August: 77°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in August: 62.8°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in August
Brookfield, WI
- Average pressure in August: 29.97"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Brookfield, WI
- Average wind speed in August: 7mph
The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in August
Brookfield, WI
- Average humidity in August: 78%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (76%).
Average rainfall in August
Brookfield, WI
- Average rainfall in August: 2.17"
The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in August
Brookfield, WI
- Average rainfall days in August: 14.3 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in August
Brookfield, WI
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Brookfield, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Brookfield, 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 6min).
- Average sunshine in August: 10h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Brookfield, WI
- Average sunshine days in August: 12.8 days
The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is July (12.1 days).
Average UV index in August
Brookfield, WI
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Brookfield, WI
- Average cloud cover in August: 28
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in August
Brookfield, WI
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
