August weather forecastOak Park, IL
August
Weather in August
August in Oak Park continues the summer trend, only marginally cooler than July. The sweltering heat continues unabated with evenings offering a gentle relief from the day's temperature. Despite sporadic rains, the city savors abundant sunshine. Outdoor activities locals engage in range from cycling to sunbathing in the vibrant public parks. Living up to the quintessential summer month, August in Oak Park is a blend of sunny days, mild nights, and a lively social scene.Temperature
August in Oak Park denotes a minimal variation in the average high-temperature to a still moderately hot 79.3°F (26.3°C) from July's 79.7°F (26.5°C). Oak Park witnesses an average low-temperature of 66.7°F (19.3°C) throughout the month of August.Humidity
In August, the average relative humidity in Oak Park is 74%.Rainfall
In Oak Park, Illinois, in August, it is raining for 16.4 days, with typically 3.5" (89mm) of accumulated precipitation. Throughout the year, there are 157.8 rainfall days, and 33.7" (856mm) of precipitation is accumulated.Snowfall
In Oak Park, snow does not fall in June through September.Daylight
In August, the average length of the day in Oak Park is 13h and 49min.On the first day of August in Oak Park, Illinois, sunrise is at 5:45 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:25 pm CDT.
Sunshine
August has the most sunshine of the year, with an average of 10.6h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In August, a regular UV index of 6 translates into these guidelines:
Guard against overexposure. Protection from sun-induced harm is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Oak Park, IL
- Average high temperature in August: 79.3°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in August: 66.7°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in August
Oak Park, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Oak Park, IL
- Average wind speed in August: 7mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in August
Oak Park, IL
- Average humidity in August: 74%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Oak Park, IL
- Average rainfall in August: 3.5"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is December (1.57").
Average rainfall days in August
Oak Park, IL
- Average rainfall days in August: 16.4 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in August
Oak Park, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Oak Park, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Oak Park, IL
- Average daylight in August: 13h and 48min
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: 10h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Oak Park, IL
- Average sunshine days in August: 11.8 days
The month with the most sunshine days is December (16.7 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in August
Oak Park, 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 and December (UV index 1).
Average cloud cover in August
Oak Park, IL
- Average cloud cover in August: 27
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in August
Oak Park, IL
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
