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 transition into August notes an average high-temperature of a still moderately hot 79.7°F (26.5°C), revealing a mild distinction from the 80.8°F (27.1°C) in July. Throughout the nights in August, an average low-temperature of 61.9°F (16.6°C) is noted in Granville.Humidity
In August, the average relative humidity is 83%.Rainfall
In Granville, in August, during 13.9 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Granville, during the entire year, the rain falls for 152.7 days and collects up to 30.79" (782mm) of precipitation.Snowfall
In Granville, snow does not fall in May through September.Daylight
The average length of the day in August is 13h and 47min.On the first day of August, sunrise is at 5:53 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:30 pm CDT.
Sunshine
The months with the most sunshine are June through August, with an average of 9.8h of sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
When are sunrise and sunset in August?
What is the month with the most sunshine?
How many hours of sunshine does Granville have in August?
What are the months with the highest UV index in Granville?
What is the UV index intensity in August?
Average temperature in August
Granville, IL
- Average high temperature in August: 79.7°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in August: 61.9°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in August
Granville, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Granville, IL
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in August
Granville, IL
- Average humidity in August: 83%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Granville, IL
- Average rainfall in August: 2.2"
The wettest month (with the highest rainfall) is May (4.69").
The driest months (with the least rainfall) are January and December (1.61").
Average rainfall days in August
Granville, IL
- Average rainfall days in August: 13.9 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in August
Granville, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Granville, 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 and August (0 days).
Average daylight in August /
Average sunshine in August
Granville, IL
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 9h and 5min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in August
Granville, IL
- Average sunshine days in August: 14.8 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is April (10.2 days).
Average UV index in August
Granville, 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
Granville, IL
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in August
Granville, IL
- Average visibility in August: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Granville, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location