August weather forecastZion, IL
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Zion, Illinois, with an average temperature ranging between max 77°F (25°C) and min 64.8°F (18.2°C).Temperature
The arrival of August sees an average high-temperature of a still moderately hot 77°F (25°C), hardly diverging from July's 77.5°F (25.3°C). An average nighttime temperature of 64.8°F (18.2°C) is noted in Zion during the month of August.Humidity
The average relative humidity in August is 79%.Rainfall
The wettest months in Zion are June and August, with an average 2.68" (68mm) of rainfall.Snowfall
In Zion, Illinois, snow does not fall in May through September.Daylight
In Zion, the average length of the day in August is 13h and 51min.On the first day of the month, sunrise is at 5:44 am and sunset at 8:10 pm. On the last day of August, in Zion, sunrise is at 6:16 am and sunset at 7:26 pm CDT.
Sunshine
July and August, with an average of 10.5h of sunshine, are months with the most sunshine in Zion.UV index
July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 6 during August translates into the following guidance:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Zion, IL
- Average high temperature in August: 77°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in August: 64.8°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in August
Zion, IL
- Average pressure in August: 29.97"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
Zion, IL
- Average wind speed in August: 7.3mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in August
Zion, IL
- Average humidity in August: 79%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in August
Zion, IL
- Average rainfall in August: 2.68"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in August
Zion, IL
- Average rainfall days in August: 15.7 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in August
Zion, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Zion, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Zion, 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 6min).
- Average sunshine in August: 10h and 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Zion, IL
- Average sunshine days in August: 11.6 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in August
Zion, IL
- Average UV index in August: 6
The months with the highest UV index are 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
Zion, 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
Zion, 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).
