August weather forecastHerscher, IL
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Herscher, Illinois, with temperature in the range of an average low of 62.6°F (17°C) and an average high of 79.7°F (26.5°C).Temperature
Herscher observes an average high-temperature of a still moderately hot 79.7°F (26.5°C) in August, barely different from 81.1°F (27.3°C) in July. During the month of August, the nighttime temperature falls to an average of 62.6°F (17°C).Humidity
The average relative humidity in August is 83%.Rainfall
In Herscher, in August, it is raining for 15 days, with typically 2.24" (57mm) of accumulated precipitation. In Herscher, Illinois, during the entire year, the rain falls for 142.1 days and collects up to 22.56" (573mm) of precipitation.Snowfall
In Herscher, snow does not fall in May through September.Daylight
The average length of the day in August is 13h and 46min.On the first day of the month, sunrise is at 5:49 am and sunset at 8:08 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:26 pm CDT.
Sunshine
The average sunshine in August is 9.6h.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In August, a daily UV index of 5 turns into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Herscher, IL
- Average high temperature in August: 79.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in August: 62.6°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in August
Herscher, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Herscher, IL
- Average wind speed in August: 6.2mph
The windiest months (with the highest average wind speed) are January and April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in August
Herscher, IL
- Average humidity in August: 83%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Herscher, IL
- Average rainfall in August: 2.24"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is February (1.06").
Average rainfall days in August
Herscher, IL
- Average rainfall days in August: 15 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (5 days).
Average snowfall in August
Herscher, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Herscher, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.7 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
Herscher, IL
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 9h and 36min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in August
Herscher, IL
- Average sunshine days in August: 11.8 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in August
Herscher, IL
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Herscher, IL
- Average cloud cover in August: 34
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in August
Herscher, IL
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
