August weather forecastOntario, WI
August
Weather in August
The last month of the summer, August, is another warm month in Ontario, Wisconsin, with an average temperature varying between 78.4°F (25.8°C) and 58.5°F (14.7°C).Temperature
Ontario sees the arrival of August with an average high-temperature of a still moderately hot 78.4°F (25.8°C), indicating a subtle variation from July. Ontario in August experiences a low-temperature average of 58.5°F (14.7°C).Humidity
In August, the average relative humidity is 79%.Rainfall
In Ontario, in August, during 13 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, there are 131.7 rainfall days, and 27.83" (707mm) of precipitation is accumulated.Snowfall
In Ontario, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 56min.On the first day of the month, sunrise is at 5:52 am and sunset at 8:25 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:39 pm CDT.
Sunshine
The average sunshine in August is 9.7h.UV index
The average daily maximum UV index in August 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: During August, 5 as the daily maximum UV index converts into the following advice:
Undertake protective steps - Preventing sun damage is advised. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Ontario, WI
- Average high temperature in August: 78.4°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (22.1°F).
- Average low temperature in August: 58.5°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in August
Ontario, WI
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Ontario, WI
- Average wind speed in August: 6.4mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in August
Ontario, WI
- Average humidity in August: 79%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (77%).
Average rainfall in August
Ontario, WI
- Average rainfall in August: 2.32"
The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in August
Ontario, WI
- Average rainfall days in August: 13 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in August
Ontario, WI
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Ontario, 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
Ontario, WI
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in August: 9h and 42min
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 0min).
Average sunshine days in August
Ontario, WI
- Average sunshine days in August: 15.7 days
The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in August
Ontario, 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, February, November and December (UV index 1).
Average cloud cover in August
Ontario, WI
- Average cloud cover in August: 33
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in August
Ontario, WI
- Average visibility in August: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).
