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
Sheffield marks the arrival of August with an average high-temperature of a still warm 80.1°F (26.7°C), hardly different from July's 81°F (27.2°C). Sheffield cools down to an average low-temperature of 62.6°F (17°C) throughout the month of August.Humidity
In Sheffield, the average relative humidity in August is 82%.Rainfall
In Sheffield, Illinois, in August, during 13.8 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Sheffield, during the entire year, the rain falls for 147.2 days and collects up to 29.17" (741mm) of precipitation.Snowfall
In Sheffield, snow does not fall in May through September.Daylight
In Sheffield, the average length of the day in August is 13h and 47min.On the first day of August, sunrise is at 5:54 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:33 pm CDT.
Sunshine
In Sheffield, the average sunshine in August is 9.8h.UV index
The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in August interprets into the following advice:
Take precautions - Protection against skin and eye damage is obliged. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are August temperatures?
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?
How many hours of sunshine does Sheffield have in August?
What is the UV index intensity in August?
Average temperature in August
Sheffield, IL
- Average high temperature in August: 80.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in August: 62.6°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in August
Sheffield, IL
- Average pressure in August: 29.97"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
Sheffield, IL
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in August
Sheffield, IL
- Average humidity in August: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Sheffield, IL
- Average rainfall in August: 2.01"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.42").
Average rainfall days in August
Sheffield, IL
- Average rainfall days in August: 13.8 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in August
Sheffield, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Sheffield, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.4 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
Sheffield, 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 12min).
- Average sunshine in August: 9h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in August
Sheffield, IL
- Average sunshine days in August: 14.4 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in August
Sheffield, IL
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in August
Sheffield, IL
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in August
Sheffield, IL
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Sheffield, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location