Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
As Mercer transitions from July to August, the average high-temperatures adjust to a still moderately hot 75.2°F (24°C), nearly the same as the previous 77.5°F (25.3°C). August's nights observe an average temperature of 55.6°F (13.1°C).Humidity
In Mercer, the average relative humidity in August is 78%.Rainfall
In Mercer, in August, it is raining for 13.5 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, in Mercer, Wisconsin, there are 126.3 rainfall days, and 24.09" (612mm) of precipitation is accumulated.Snowfall
In Mercer, snow does not fall in June through September.Daylight
The average length of the day in August in Mercer is 14h and 6min.On the first day of August, sunrise is at 5:43 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:40 pm CDT.
Sunshine
In Mercer, the average sunshine in August is 9.2h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What are the temperatures in Mercer in August?
What is the average humidity in August in Mercer?
How much does it rain in Mercer in August?
When it does not snow in Mercer?
How many hours of daylight does Mercer have in August?
What time are sunrise and sunset in August in Mercer?
How long on average sun shines in August in Mercer?
When is the highest UV index in Mercer?
What is the UV index reading in August in Mercer?
Average temperature in August
Mercer, WI
- Average high temperature in August: 75.2°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (18.3°F).
- Average low temperature in August: 55.6°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (7°F).
Average pressure in August
Mercer, WI
- Average pressure in August: 29.94"Hg
The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Mercer, WI
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is November (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in August
Mercer, WI
- Average humidity in August: 78%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (71%).
Average rainfall in August
Mercer, WI
- Average rainfall in August: 1.85"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in August
Mercer, WI
- Average rainfall days in August: 13.5 days
The months with the highest number of rainy days are May and June (16 days).
The month with the least rainy days is January (3 days).
Average snowfall in August
Mercer, WI
- Average snowfall in August: 0"
The month with the highest snowfall is December (10.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Mercer, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (25.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Mercer, WI
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 9h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in August
Mercer, WI
- Average sunshine days in August: 14.3 days
The month with the most sunshine days is August (14.3 days).
The month with the least sunshine days is January (6.3 days).
Average UV index in August
Mercer, WI
- Average UV index in August: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in August
Mercer, WI
- Average cloud cover in August: 40
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in August
Mercer, WI
- Average visibility in August: 5mi
The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January, February and December (4mi).
Mercer, Wisconsin, USA
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