August weather forecastRichmond, IL
August
Weather in August
August, the last month of the summer in Richmond, is also a moderately hot month, with an average temperature ranging between max 77.5°F (25.3°C) and min 59.9°F (15.5°C).Temperature
August's advent denotes a minor fluctuation in the average high-temperature to a still warm 77.5°F (25.3°C) from July's 79.3°F (26.3°C). In August, Richmond records an average nighttime temperature of 59.9°F (15.5°C).Humidity
In Richmond, the average relative humidity in August is 83%.Rainfall
In Richmond, in August, it is raining for 13.8 days, with typically 2.2" (56mm) of accumulated precipitation. In Richmond, during the entire year, the rain falls for 133.6 days and collects up to 20.16" (512mm) of precipitation.Snowfall
In Richmond, snow does not fall in June through September.Daylight
In Richmond, Illinois, the average length of the day in August is 13h and 51min.On the first day of August, sunrise is at 5:46 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:28 pm CDT.
Sunshine
The average sunshine in August is 9.7h.UV index
The average daily maximum UV index in August in Richmond is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 5 in August transforms into the following instructions:
Exercise prevention - Warding off sunburn is urged. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Richmond, IL
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in August: 59.9°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in August
Richmond, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Richmond, IL
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in August
Richmond, IL
- Average humidity in August: 83%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).
Average rainfall in August
Richmond, IL
- Average rainfall in August: 2.2"
The wettest month (with the highest rainfall) is June (2.87").
The driest months (with the least rainfall) are January, February and December (0.83").
Average rainfall days in August
Richmond, IL
- Average rainfall days in August: 13.8 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in August
Richmond, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Richmond, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Richmond, IL
- Average daylight in August: 13h and 54min
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 6min).
- Average sunshine in August: 9h and 42min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Richmond, IL
- Average sunshine days in August: 12.3 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in August
Richmond, IL
- Average UV index in August: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Richmond, IL
- Average cloud cover in August: 34
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in August
Richmond, 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).
