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
Rockford experiences a minor change to a still moderately hot 78.1°F (25.6°C) in average high-temperature during August, closely reflecting July. Rockford records an average low-temperature of 60.6°F (15.9°C) throughout the month of August.Humidity
The average relative humidity in August is 84%.Rainfall
In August, in Rockford, the rain falls for 14.8 days. Throughout August, 2.32" (59mm) of precipitation is accumulated. In Rockford, during the entire year, the rain falls for 148.1 days and collects up to 28.39" (721mm) of precipitation.Snowfall
May through September are months without snowfall in Rockford, Illinois.Daylight
In August, the average length of the day in Rockford is 13h and 50min.On the first day of the month, sunrise is at 5:49 am and sunset at 8:15 pm. On the last day of August, sunrise is at 6:21 am and sunset at 7:31 pm CDT.
Sunshine
In Rockford, the average sunshine in August is 9.6h.UV index
The months with the highest UV index in Rockford are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 5 in August, converts into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. 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 the temperatures in Rockford in August?
What is the average humidity in August in Rockford?
How much does it rain in Rockford in August?
When it does not snow in Rockford?
How many hours of daylight does Rockford have in August?
What time are sunrise and sunset in August in Rockford?
How many hours of sunshine does Rockford have in August?
What is the month with the highest UV index in Rockford?
What is the UV index intensity in August in Rockford?
Average temperature in August
Rockford, IL
- Average high temperature in August: 78.1°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 (26.2°F).
- Average low temperature in August: 60.6°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in August
Rockford, IL
- Average pressure in August: 29.97"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Rockford, IL
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in August
Rockford, IL
- Average humidity in August: 84%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in August
Rockford, IL
- Average rainfall in August: 2.32"
The wettest month (with the highest rainfall) is June (4.02").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in August
Rockford, IL
- Average rainfall days in August: 14.8 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in August
Rockford, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Rockford, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Rockford, IL
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 9h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in August
Rockford, IL
- Average sunshine days in August: 13.8 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in August
Rockford, IL
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in August
Rockford, IL
- Average cloud cover in August: 34
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in August
Rockford, IL
- Average visibility in August: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Rockford, Illinois, USA
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