August weather forecastWinona, MI
August
Weather in August
The last month of the summer, August, is also an agreeable month in Winona, Michigan, with temperature in the range of an average high of 69.4°F (20.8°C) and an average low of 58.1°F (14.5°C).Temperature
August stands out as Winona's warmest month, with an average high-temperature of 69.4°F (20.8°C) and a low-temperature of 58.1°F (14.5°C).Humidity
The average relative humidity in August is 79%.Rainfall
The wettest months are April, June, August and October, with an average 2.28" (58mm) of rainfall.Snowfall
June through September are months without snowfall in Winona.Daylight
In August, the average length of the day in Winona, Michigan, is 14h and 9min.On the first day of the month, sunrise is at 6:36 am and sunset at 9:27 pm. On the last day of August, in Winona, sunrise is at 7:14 am and sunset at 8:36 pm EDT.
Sunshine
In Winona, the average sunshine in August is 9.6h.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In August, the maximum UV index of 5 translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Winona, MI
- Average high temperature in August: 69.4°F
The warmest month (with the highest average high temperature) is August (69.4°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in August: 58.1°F
The month with the highest average low temperature is August (58.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in August
Winona, MI
- Average pressure in August: 29.93"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
Winona, MI
- Average wind speed in August: 8.4mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is June (7.6mph).
Average humidity in August
Winona, MI
- Average humidity in August: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (75%).
Average rainfall in August
Winona, MI
- Average rainfall in August: 2.28"
The wettest months (with the highest rainfall) are April, June, August and October (2.28").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in August
Winona, MI
- Average rainfall days in August: 13.8 days
The month with the highest number of rainy days is October (14.6 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in August
Winona, MI
- Average snowfall in August: 0"
The month with the highest snowfall is December (6.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Winona, MI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (22.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Winona, MI
- Average daylight in August: 14h and 12min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in August: 9h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in August
Winona, MI
- Average sunshine days in August: 15.3 days
The month with the most sunshine days is July (15.5 days).
The month with the least sunshine days is January (5.6 days).
Average UV index in August
Winona, MI
- 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, November and December (UV index 1).
Average cloud cover in August
Winona, MI
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 84).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in August
Winona, MI
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
