August weather forecastLena, IL
August
Weather in August
August in Lena welcomes late-summer weather, featuring high temperatures, ample daylight, and frequent sunshine. The month often retains details of July’s peak summer conditions, with only a slight decrease in average temperatures. Rainfall becomes less frequent, and breezes bring slight relief to the lingering warmth. Despite being a summer month, August sees a slight dip in maximum temperatures to a still toasty 78.1°F (25.6°C). Outdoor enthusiasts can still enjoy nature outings and afternoons by the water, taking advantage of the season's remaining warmth.Temperature
August brings an average high-temperature of a still moderately hot 78.1°F (25.6°C), nearly identical to the preceding month. Nighttime temperature dips to a mean of 60.4°F (15.8°C) during August.Humidity
In Lena, the average relative humidity in August is 83%.Rainfall
In Lena, during August, the rain falls for 14.3 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, there are 145.9 rainfall days, and 22.8" (579mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Lena, the average length of the day in August is 13h and 51min.On the first day of August, sunrise is at 5:52 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:34 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 9.7h of sunshine.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high UV index of 5 in August translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Lena, IL
- Average high temperature in August: 78.1°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.8°F).
- Average low temperature in August: 60.4°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in August
Lena, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Lena, IL
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in August
Lena, IL
- Average humidity in August: 83%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in August
Lena, IL
- Average rainfall in August: 1.77"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in August
Lena, IL
- Average rainfall days in August: 14.3 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (5.3 days).
Average snowfall in August
Lena, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Lena, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Lena, 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: 9h and 42min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in August
Lena, IL
- Average sunshine days in August: 14.6 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in August
Lena, 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
Lena, IL
- Average cloud cover in August: 34
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in August
Lena, IL
- Average visibility in August: 5mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
