August weather forecastLyons, IL
August
Weather in August
August, the last month of the summer in Lyons, is also a moderately hot month, with an average temperature varying between 79.3°F (26.3°C) and 66.7°F (19.3°C).Temperature
Lyons experiences a recorded average high-temperature of a still moderately hot 79.3°F (26.3°C) in August, closely aligned with July's 80.4°F (26.9°C). An average temperature of 66.7°F (19.3°C) marks the nights in August.Humidity
In August, the average relative humidity is 75%.Rainfall
In Lyons, in August, during 9.5 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Lyons, Illinois, during the entire year, the rain falls for 92 days and collects up to 7.4" (188mm) of precipitation.Snowfall
In Lyons, snow does not fall in May through September.Daylight
In August, the average length of the day is 13h and 49min.On the first day of August, sunrise is at 5:46 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
With an average of 10.6h of sunshine, August has the most sunshine of the year.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In August, the maximum UV index of 6 translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Lyons, IL
- Average high temperature in August: 79.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in August: 66.7°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in August
Lyons, 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
Lyons, IL
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in August
Lyons, IL
- Average humidity in August: 75%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Lyons, IL
- Average rainfall in August: 0.63"
The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are February, March, November and December (0.39").
Average rainfall days in August
Lyons, IL
- Average rainfall days in August: 9.5 days
The month with the highest number of rainy days is June (11.7 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in August
Lyons, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Lyons, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (7.3 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
Lyons, 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 48min).
Average sunshine days in August
Lyons, IL
- Average sunshine days in August: 17.2 days
The month with the most sunshine days is December (23.7 days).
The month with the least sunshine days is June (14.3 days).
Average UV index in August
Lyons, 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
Lyons, 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
Lyons, 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).
