August weather forecastManlius, IL
August
Weather in August
August, the last month of the summer in Manlius, is another warm month, with an average temperature fluctuating between 79.5°F (26.4°C) and 62.1°F (16.7°C).Temperature
The arrival of August brings an average high-temperature of a still warm 79.5°F (26.4°C), closely following the temperature pattern of July. Manlius's average low-temperature in the month of August is recorded at a comfortable 62.1°F (16.7°C).Humidity
In August, the average relative humidity in Manlius, Illinois, is 83%.Rainfall
In Manlius, in August, during 11.5 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, in Manlius, there are 114.5 rainfall days, and 12.72" (323mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Manlius.Daylight
In August, the average length of the day in Manlius is 13h and 47min.On the first day of the month, sunrise is at 5:54 am and sunset at 8:15 pm. On the last day of August, in Manlius, Illinois, sunrise is at 6:24 am and sunset at 7:32 pm CDT.
Sunshine
June through August, with an average of 9.6h of sunshine, are months with the most sunshine.UV index
In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In August, an average UV index of 5 transforms into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Manlius, IL
- Average high temperature in August: 79.5°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in August: 62.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in August
Manlius, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Manlius, IL
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in August
Manlius, IL
- Average humidity in August: 83%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in August
Manlius, IL
- Average rainfall in August: 1.02"
The wettest month (with the highest rainfall) is May (2.01").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in August
Manlius, IL
- Average rainfall days in August: 11.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in August
Manlius, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Manlius, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.1 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
Manlius, IL
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 9h and 36min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Manlius, IL
- Average sunshine days in August: 16.1 days
The month with the most sunshine days is December (20.8 days).
The month with the least sunshine days is June (13.5 days).
Average UV index in August
Manlius, IL
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Manlius, IL
- Average cloud cover in August: 33
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in August
Manlius, IL
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).





