August weather forecastSister Bay, WI
August
Weather in August
The last month of the summer, August, is also an agreeable month in Sister Bay, Wisconsin, with an average temperature varying between 69.6°F (20.9°C) and 63°F (17.2°C).Temperature
Sister Bay's August weather, with an average high temperature of 69.6°F (20.9°C) and an average low temperature of 63°F (17.2°C), tends to be the warmest of the year.Humidity
In August, the average relative humidity is 80%.Rainfall
In August, the rain falls for 15.6 days. Throughout August, 2.24" (57mm) of precipitation is accumulated. Throughout the year, in Sister Bay, there are 141.7 rainfall days, and 26.93" (684mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 14h and 2min.On the first day of the month, sunrise is at 5:34 am and sunset at 8:15 pm. On the last day of August, sunrise is at 6:10 am and sunset at 7:27 pm CDT.
Sunshine
In August, the average sunshine in Sister Bay is 10.5h.UV index
July and August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In August, the maximum UV index of 5 translates into these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sister Bay, WI
- Average high temperature in August: 69.6°F
The warmest month (with the highest average high temperature) is August (69.6°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in August: 63°F
The month with the highest average low temperature is August (63°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in August
Sister Bay, WI
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Sister Bay, WI
- Average wind speed in August: 10.3mph
The windiest month (with the highest average wind speed) is December (15.5mph).
The calmest months (with the lowest average wind speed) are June and July (9.6mph).
Average humidity in August
Sister Bay, WI
- Average humidity in August: 80%
The months with the highest relative humidity are January and June (84%).
The month with the lowest relative humidity is November (76%).
Average rainfall in August
Sister Bay, WI
- Average rainfall in August: 2.24"
The wettest month (with the highest rainfall) is October (3.07").
The driest months (with the least rainfall) are January and February (1.38").
Average rainfall days in August
Sister Bay, WI
- Average rainfall days in August: 15.6 days
The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in August
Sister Bay, WI
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Sister Bay, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Sister Bay, WI
- Average daylight in August: 14h and 0min
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: 10h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in August
Sister Bay, WI
- Average sunshine days in August: 13.6 days
The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in August
Sister Bay, WI
- Average UV index in August: 5
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, March and December (UV index 1).
Average cloud cover in August
Sister Bay, WI
- Average cloud cover in August: 28
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in August
Sister Bay, WI
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
