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
Mettawa's shift into August is marked by a subtle change to a still moderately hot 79.3°F (26.3°C) from July's 80.4°F (26.9°C) in temperature. During the month of August, an average low-temperature of 63.7°F (17.6°C) is recorded in Mettawa.Humidity
The average relative humidity in August in Mettawa is 77%.Rainfall
In Mettawa, in August, it is raining for 15.8 days, with typically 2.87" (73mm) of accumulated precipitation. In Mettawa, during the entire year, the rain falls for 147.3 days and collects up to 27.44" (697mm) of precipitation.Snowfall
In Mettawa, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 50min.On the first day of the month, sunrise is at 5:45 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:16 am and sunset at 7:26 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.1h of sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 6 in August leads to these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Mettawa in August?
What is the average humidity in August in Mettawa?
How many days does it rain in August in Mettawa?
When it does not snow in Mettawa?
How many hours of daylight does Mettawa have in August?
When is the sunrise / sunset in August in Mettawa?
What are the months with the most sunshine in Mettawa?
How long on average sun shines in August in Mettawa?
When is the highest UV index in Mettawa?
How high is the UV index in August in Mettawa?
Average temperature in August
Mettawa, IL
- Average high temperature in August: 79.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (27.9°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 (16.5°F).
Average pressure in August
Mettawa, 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
Mettawa, IL
- Average wind speed in August: 6.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in August
Mettawa, IL
- Average humidity in August: 77%
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
Mettawa, IL
- Average rainfall in August: 2.87"
The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are November and December (1.3").
Average rainfall days in August
Mettawa, IL
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in August
Mettawa, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Mettawa, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Mettawa, 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: 10h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Mettawa, IL
- Average sunshine days in August: 12.7 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10 days).
Average UV index in August
Mettawa, IL
- Average UV index in August: 6
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Mettawa, IL
- Average cloud cover in August: 30
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 30).
Average visibility in August
Mettawa, 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).
Mettawa, Illinois, USA
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