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
With its high average temperature of 77°F (25°C) and a low of 68°F (20°C), August is regarded as the warmest month.Humidity
The average relative humidity in August is 75%.Rainfall
In Evanston, in August, during 15.8 rainfall days, 3.54" (90mm) of precipitation is typically accumulated. Throughout the year, in Evanston, there are 154.1 rainfall days, and 33.31" (846mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Evanston, Illinois.Daylight
The average length of the day in August in Evanston is 13h and 49min.On the first day of August, sunrise is at 5:44 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
The months with the most sunshine are July and August, 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 estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 6 during August leads to these instructions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What are the warmest months in Evanston?
What are the temperatures in Evanston in August?
What is the average humidity in August in Evanston?
How many days does it rain in August in Evanston?
When it does not snow in Evanston?
What is the average length of the day in August in Evanston?
What time are sunrise and sunset in August in Evanston?
What are the months with the most sunshine in Evanston?
How many hours of sunshine does Evanston have in August?
What is the month with the highest UV index in Evanston?
What is the UV index intensity in August in Evanston?
Average temperature in August
Evanston, IL
- Average high temperature in August: 77°F
The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in August: 68°F
The months with the highest average low temperature are July and August (68°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in August
Evanston, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Evanston, IL
- Average wind speed in August: 8mph
The windiest month (with the highest average wind speed) is January (12.7mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).
Average humidity in August
Evanston, IL
- Average humidity in August: 75%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in August
Evanston, IL
- Average rainfall in August: 3.54"
The wettest month (with the highest rainfall) is June (4.49").
The driest month (with the least rainfall) is December (1.38").
Average rainfall days in August
Evanston, IL
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in August
Evanston, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Evanston, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.6 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
Evanston, 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: 10h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in August
Evanston, IL
- Average sunshine days in August: 12.6 days
The month with the most sunshine days is December (15.3 days).
The months with the least sunshine days are June and July (10.9 days).
Average UV index in August
Evanston, IL
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Evanston, IL
- Average cloud cover in August: 27
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in August
Evanston, 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).
Evanston, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
