August weather forecastUnion, IL
August
Weather in August
August, the last month of the summer in Union, is another warm month, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 78.1°F (25.6°C).Temperature
August's advent notes a subtle adjustment in average high-temperature to a still moderately hot 78.1°F (25.6°C) from July. Union's average low-temperature in August is measured at a refreshing 60.4°F (15.8°C).Humidity
The average relative humidity in August in Union is 84%.Rainfall
In August, the rain falls for 16.1 days. Throughout August, 3.03" (77mm) of precipitation is accumulated. Throughout the year, there are 154.6 rainfall days, and 30.31" (770mm) of precipitation is accumulated.Snowfall
In Union, snow does not fall in May through September.Daylight
In Union, the average length of the day in August is 13h and 50min.On the first day of August, sunrise is at 5:47 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:29 pm CDT.
Sunshine
In August, the average sunshine is 9.5h.UV index
The months with the highest UV index in Union are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In August, the maximum UV index of 5 suggests these recommendations:
Make use of precautions - It is urged to ward off sun damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Union, IL
- Average high temperature in August: 78.1°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 (26.1°F).
- Average low temperature in August: 60.4°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in August
Union, IL
- Average pressure in August: 29.97"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
Union, IL
- Average wind speed in August: 6.1mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in August
Union, IL
- Average humidity in August: 84%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (76%).
Average rainfall in August
Union, IL
- Average rainfall in August: 3.03"
The wettest month (with the highest rainfall) is June (4.21").
The driest months (with the least rainfall) are February and November (1.5").
Average rainfall days in August
Union, IL
- Average rainfall days in August: 16.1 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in August
Union, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Union, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.3 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
Union, 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: 9h and 30min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in August
Union, IL
- Average sunshine days in August: 12.3 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.5 days).
Average UV index in August
Union, IL
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Union, IL
- Average cloud cover in August: 35
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in August
Union, IL
- Average visibility in August: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
