August weather forecastAlgonquin, IL
August
Weather in August
The last month of the summer, August, is another warm month in Algonquin, Illinois, with an average temperature fluctuating between 78.6°F (25.9°C) and 62.1°F (16.7°C).Temperature
Algonquin's weather in August displays an average high-temperature of a still moderately hot 78.6°F (25.9°C), showing minor disparity from July's 80.1°F (26.7°C). August witnesses an average nighttime temperature of 62.1°F (16.7°C).Humidity
In Algonquin, the average relative humidity in August is 82%.Rainfall
The months with the most rainfall are April and August, with an average 1.89" (48mm) of precipitation.Snowfall
In Algonquin, snow does not fall in June through September.Daylight
In August, the average length of the day in Algonquin is 13h and 50min.On the first day of the month, sunrise is at 5:47 am and sunset at 8:11 pm. On the last day of August, in Algonquin, sunrise is at 6:18 am and sunset at 7:28 pm CDT.
Sunshine
The average sunshine in August in Algonquin, Illinois, is 9.9h.UV index
The average daily maximum UV index in August in Algonquin, Illinois, is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Algonquin, IL
- Average high temperature in August: 78.6°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in August: 62.1°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in August
Algonquin, 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
Algonquin, IL
- Average wind speed in August: 6.1mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in August
Algonquin, IL
- Average humidity in August: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in August
Algonquin, IL
- Average rainfall in August: 1.89"
The wettest months (with the highest rainfall) are April and August (1.89").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in August
Algonquin, IL
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in August
Algonquin, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.01").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Algonquin, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Algonquin, 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: 9h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Algonquin, IL
- Average sunshine days in August: 11.2 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in August
Algonquin, 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
Algonquin, IL
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility in August
Algonquin, IL
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
