Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The onset of August marks an average high-temperature of a still moderately hot 79.9°F (26.6°C), hardly differing from July's 81.3°F (27.4°C). Streamwood throughout August, records an average low-temperature of 63.7°F (17.6°C).Humidity
In August, the average relative humidity is 78%.Rainfall
In Streamwood, in August, during 15.8 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In Streamwood, during the entire year, the rain falls for 141.5 days and collects up to 22.76" (578mm) of precipitation.Snowfall
In Streamwood, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 49min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:27 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 9.8h of sunshine.UV index
The months with the highest UV index in Streamwood are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 6 during August translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August in Streamwood?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does Streamwood have in August?
When are sunrise and sunset in August?
What are the months with the most sunshine?
How many hours of sunshine does Streamwood have in August?
What is the month with the highest UV index?
What is the UV index reading in August?
Average temperature in August
Streamwood, IL
- Average high temperature in August: 79.9°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 (27.7°F).
- Average low temperature in August: 63.7°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 (16.3°F).
Average pressure in August
Streamwood, 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
Streamwood, IL
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in August
Streamwood, IL
- Average humidity in August: 78%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Streamwood, IL
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (1.02").
Average rainfall days in August
Streamwood, IL
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in August
Streamwood, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Streamwood, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Streamwood, IL
- Average daylight in August: 13h and 5min
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 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in August
Streamwood, IL
- Average sunshine days in August: 11.3 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in August
Streamwood, 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 and December (UV index 1).
Average cloud cover in August
Streamwood, IL
- Average cloud cover in August: 33
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 33).
Average visibility in August
Streamwood, IL
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Streamwood, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location