August weather forecastOnalaska, WA
August
Weather in August
August, the last month of the summer in Onalaska, is another warm month, with an average temperature fluctuating between 76.6°F (24.8°C) and 48.6°F (9.2°C).Temperature
The warmest period is August, when temperatures fluctuate between an average high of 76.6°F (24.8°C) and a low of 48.6°F (9.2°C).Humidity
In August, the average relative humidity is 74%.Rainfall
The months with the least rainfall are July and August Rain falls for 6.1 days and accumulates 0.39" (10mm) of rain.Snowfall
April through October are months without snowfall.Daylight
In Onalaska, the average length of the day in August is 14h and 8min.On the first day of the month, sunrise is at 5:52 am and sunset at 8:41 pm. On the last day of August, in Onalaska, Washington, sunrise is at 6:30 am and sunset at 7:51 pm PDT.
Sunshine
The month with the most sunshine is August, with an average of 10.3h of sunshine.UV index
In August, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In August, the maximum UV index of 4 translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Onalaska, WA
- Average high temperature in August: 76.6°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in August: 48.6°F
The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is December (32.4°F).
Average pressure in August
Onalaska, WA
- Average pressure in August: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in August
Onalaska, WA
- Average wind speed in August: 3.5mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest months (with the lowest average wind speed) are August and September (3.5mph).
Average humidity in August
Onalaska, WA
- Average humidity in August: 74%
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (73%).
Average rainfall in August
Onalaska, WA
- Average rainfall in August: 0.39"
The wettest month (with the highest rainfall) is January (3.54").
The driest months (with the least rainfall) are July and August (0.39").
Average rainfall days in August
Onalaska, WA
- Average rainfall days in August: 6.1 days
The month with the highest number of rainy days is March (19.4 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in August
Onalaska, WA
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Onalaska, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Onalaska, WA
- Average daylight in August: 14h and 6min
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: 10h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 42min).
Average sunshine days in August
Onalaska, WA
- Average sunshine days in August: 22.1 days
The month with the most sunshine days is August (22.1 days).
The month with the least sunshine days is February (9 days).
Average UV index in August
Onalaska, WA
- Average UV index in August: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Onalaska, WA
- Average cloud cover in August: 37
The months with the most cloud cover are February and March (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in August
Onalaska, WA
- Average visibility in August: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
