August weather forecastHighwood, IL
August
Weather in August
August, the last month of the summer in Highwood, is another warm month, with temperature in the range of an average low of 66.7°F (19.3°C) and an average high of 77.5°F (25.3°C).Temperature
At the onset of August, Highwood records an average high-temperature of a still warm 77.5°F (25.3°C), showing little deviation from the preceding month. An average low-temperature of 66.7°F (19.3°C) is recorded during the nights in August in Highwood.Humidity
In August, the average relative humidity is 76%.Rainfall
In August, the rain falls for 15.8 days. Throughout August, 3.07" (78mm) of precipitation is accumulated. Throughout the year, there are 154.1 rainfall days, and 30.24" (768mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Highwood.Daylight
The average length of the day in August in Highwood, Illinois, is 13h and 50min.On the first day of August in Highwood, Illinois, sunrise is at 5:45 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:26 pm CDT.
Sunshine
August has the most sunshine of the year, with an average of 10.7h of sunshine.UV index
The months with the highest UV index in Highwood are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.Note: In August, a regular UV index of 6 translates into these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. 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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Highwood, IL
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in August: 66.7°F
The months with the highest average low temperature are July and August (66.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in August
Highwood, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Highwood, IL
- Average wind speed in August: 7.4mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in August
Highwood, IL
- Average humidity in August: 76%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in August
Highwood, IL
- Average rainfall in August: 3.07"
The wettest months (with the highest rainfall) are May and June (3.82").
The driest month (with the least rainfall) is December (1.3").
Average rainfall days in August
Highwood, IL
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in August
Highwood, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Highwood, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.9 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
Highwood, 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: 10h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in August
Highwood, IL
- Average sunshine days in August: 13.1 days
The month with the most sunshine days is December (15.3 days).
The month with the least sunshine days is April (10.8 days).
Average UV index in August
Highwood, IL
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Highwood, IL
- Average cloud cover in August: 27
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in August
Highwood, IL
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
