August weather forecastClinton, IL
August
Weather in August
The last month of the summer, August, is another warm month in Clinton, Illinois, with an average temperature ranging between min 63.5°F (17.5°C) and max 81°F (27.2°C).Temperature
With the arrival of August, Clinton's average high-temperature registers at a still moderately hot 81°F (27.2°C), indicating a subtle variation from the previous month. In August, Clinton's temperature tends to fall to an average low of 63.5°F (17.5°C) during the night.Heat index
The heat index for August is appraised at a hot 87.8°F (31°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in August is 83%.Rainfall
In Clinton, in August, during 16.7 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. In Clinton, during the entire year, the rain falls for 165.4 days and collects up to 33.78" (858mm) of precipitation.Snowfall
In Clinton, snow does not fall in May through September.Daylight
The average length of the day in August is 13h and 43min.On the first day of the month, sunrise is at 5:54 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:23 am and sunset at 7:28 pm CDT.
Sunshine
In Clinton, the average sunshine in August is 9.8h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 6 in August interprets into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Clinton, IL
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in August: 63.5°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in August
Clinton, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Clinton, IL
- Average wind speed in August: 6.4mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in August
Clinton, 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 (70%).
Average rainfall in August
Clinton, IL
- Average rainfall in August: 2.95"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is December (1.89").
Average rainfall days in August
Clinton, IL
- Average rainfall days in August: 16.7 days
The months with the highest number of rainy days are May and July (20.2 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in August
Clinton, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Clinton, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12 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
Clinton, IL
- Average daylight in August: 13h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 9h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in August
Clinton, IL
- Average sunshine days in August: 11.3 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in August
Clinton, IL
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Clinton, IL
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in August
Clinton, 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).
