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
With the onset of August, a modest change to a still warm 77.5°F (25.3°C) from July's 78.8°F (26°C) is noted in high-temperature. During the nights in August, Grand Marsh experiences a consistent average temperature of 59.4°F (15.2°C).Humidity
The average relative humidity in August is 80%.Rainfall
In Grand Marsh, in August, it is raining for 12.8 days, with typically 2.17" (55mm) of accumulated precipitation. In Grand Marsh, during the entire year, the rain falls for 129.4 days and collects up to 26.3" (668mm) of precipitation.Snowfall
In Grand Marsh, snow does not fall in June through September.Daylight
In Grand Marsh, the average length of the day in August is 13h and 56min.On the first day of the month, sunrise is at 5:48 am and sunset at 8:22 pm. On the last day of August, sunrise is at 6:21 am and sunset at 7:35 pm CDT.
Sunshine
The average sunshine in August is 9.8h.UV index
The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 5 during August translates into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are August temperatures?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does Grand Marsh have in August?
What time are sunrise and sunset in August?
How many hours of sunshine does Grand Marsh have in August?
How high is the UV index in August?
Average temperature in August
Grand Marsh, WI
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (21.7°F).
- Average low temperature in August: 59.4°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in August
Grand Marsh, WI
- Average pressure in August: 29.96"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Grand Marsh, WI
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in August
Grand Marsh, WI
- Average humidity in August: 80%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in August
Grand Marsh, WI
- Average rainfall in August: 2.17"
The wettest month (with the highest rainfall) is June (3.5").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in August
Grand Marsh, WI
- Average rainfall days in August: 12.8 days
The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is January (3.9 days).
Average snowfall in August
Grand Marsh, WI
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Grand Marsh, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Grand Marsh, WI
- Average daylight in August: 13h and 5min
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 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in August
Grand Marsh, WI
- Average sunshine days in August: 16.1 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in August
Grand Marsh, 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
Grand Marsh, WI
- Average cloud cover in August: 33
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in August
Grand Marsh, WI
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
Grand Marsh, Wisconsin, USA
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