August weather forecastDonnellson, IL
August
Weather in August
August, the last month of the summer in Donnellson, is also a moderately hot month, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 64.9°F (18.3°C).Temperature
Donnellson's August reports an average high-temperature of a still warm 82.6°F (28.1°C), exhibiting a minor difference from July. Donnellson, during August, witnesses an average low-temperature of 64.9°F (18.3°C).Heat index
The heat index for August is evaluated at a tropical 91.4°F (33°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humidity
In August, the average relative humidity is 81%.Rainfall
In August, in Donnellson, the rain falls for 12.3 days. Throughout August, 2.36" (60mm) of precipitation is accumulated. In Donnellson, Illinois, during the entire year, the rain falls for 138.5 days and collects up to 24.33" (618mm) of precipitation.Snowfall
In Donnellson, snow does not fall in April through October.Daylight
In August, the average length of the day in Donnellson is 13h and 39min.On the first day of the month, sunrise is at 5:59 am and sunset at 8:09 pm. On the last day of August, in Donnellson, Illinois, sunrise is at 6:26 am and sunset at 7:29 pm CDT.
Sunshine
In August, the average sunshine in Donnellson is 9.8h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 6 in August leads to these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Donnellson, IL
- Average high temperature in August: 82.6°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in August: 64.9°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 (22.6°F).
Average pressure in August
Donnellson, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Donnellson, IL
- Average wind speed in August: 6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in August
Donnellson, IL
- Average humidity in August: 81%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Donnellson, IL
- Average rainfall in August: 2.36"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in August
Donnellson, IL
- Average rainfall days in August: 12.3 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7 days).
Average snowfall in August
Donnellson, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Donnellson, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.2 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
Donnellson, IL
- Average daylight in August: 13h and 36min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in August: 9h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in August
Donnellson, IL
- Average sunshine days in August: 15.5 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in August
Donnellson, 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
Donnellson, IL
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in August
Donnellson, IL
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
