August weather forecastRyan, IL
August
Weather in August
August, the last month of the summer in Ryan, is also a moderately hot month, with an average temperature varying between 63.3°F (17.4°C) and 80.6°F (27°C).Temperature
The beginning of August records an average high-temperature of a still warm 80.6°F (27°C), marking a negligible difference from July's 81.3°F (27.4°C). Ryan throughout August, experiences an average nighttime temperature of 63.3°F (17.4°C).Heat index
In August, the average heat index is appraised at a hot 86°F (30°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
In Ryan, Illinois, the average relative humidity in August is 83%.Rainfall
In Ryan, in August, it is raining for 14.6 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 151.8 rainfall days, and 25.63" (651mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in August is 13h and 42min.On the first day of the month, sunrise is at 5:50 am and sunset at 8:04 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:23 pm CDT.
Sunshine
In Ryan, the average sunshine in August is 9.9h.UV index
The months with the highest UV index in Ryan are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 6 in August translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Ryan, IL
- Average high temperature in August: 80.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in August: 63.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in August
Ryan, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Ryan, IL
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in August
Ryan, IL
- Average humidity in August: 83%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Ryan, IL
- Average rainfall in August: 2.24"
The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").
Average rainfall days in August
Ryan, IL
- Average rainfall days in August: 14.6 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in August
Ryan, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Ryan, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.6 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
Ryan, IL
- Average daylight in August: 13h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 9h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in August
Ryan, IL
- Average sunshine days in August: 11.9 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in August
Ryan, 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, February, November and December (UV index 2).
Average cloud cover in August
Ryan, IL
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility in August
Ryan, 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).
