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
The advent of August brings an average high-temperature of a still moderately hot 76.8°F (24.9°C), almost identical to the preceding month. Throughout August nights, Rock Falls experiences a consistent temperature average of 57.9°F (14.4°C).Humidity
In August, the average relative humidity is 81%.Rainfall
In August, the rain falls for 15.1 days. Throughout August, 2.32" (59mm) of precipitation is accumulated. In Rock Falls, during the entire year, the rain falls for 135.6 days and collects up to 26.57" (675mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Rock Falls, the average length of the day in August is 14h and 0min.On the first day of the month, sunrise is at 5:53 am and sunset at 8:32 pm. On the last day of August, sunrise is at 6:28 am and sunset at 7:44 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 9.6h of sunshine.UV index
The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 5 during August translates into the following directions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
What is the average length of the day in August?
When are sunrise and sunset in August?
What is the month with the most sunshine?
How many hours of sunshine does Rock Falls have in August?
How high is the UV index in August?
Average temperature in August
Rock Falls, WI
- Average high temperature in August: 76.8°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (19.9°F).
- Average low temperature in August: 57.9°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 (6.3°F).
Average pressure in August
Rock Falls, WI
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Rock Falls, WI
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in August
Rock Falls, WI
- Average humidity in August: 81%
The months with the highest relative humidity are January and February (91%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in August
Rock Falls, WI
- Average rainfall in August: 2.32"
The wettest month (with the highest rainfall) is June (4.57").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in August
Rock Falls, WI
- Average rainfall days in August: 15.1 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in August
Rock Falls, WI
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Rock Falls, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (16.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Rock Falls, WI
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in August: 9h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in August
Rock Falls, WI
- Average sunshine days in August: 13.5 days
The month with the most sunshine days is October (16.3 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in August
Rock Falls, 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
Rock Falls, 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
Rock Falls, WI
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, August, October and November (6mi).
The month with the lowest visibility is January (4mi).
Rock Falls, Wisconsin, USA
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