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
Rock City in August witnesses an average high-temperature of a still moderately hot 78.3°F (25.7°C), indicating a slight variation from July's 79.7°F (26.5°C). In August, the nighttime temperature in Rock City lowers to an average of 60.8°F (16°C).Humidity
The average relative humidity in August is 83%.Rainfall
In Rock City, in August, it is raining for 14.2 days, with typically 1.69" (43mm) of accumulated precipitation. In Rock City, during the entire year, the rain falls for 138 days and collects up to 19.69" (500mm) of precipitation.Snowfall
In Rock City, snow does not fall in May through September.Daylight
In August, the average length of the day is 13h and 51min.On the first day of August, sunrise is at 5:51 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:33 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 9.7h of sunshine.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 5 during August translates into the following directions:
Undertake precautions - Guarding against sun damage is counselled. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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 many days does it rain in August in Rock City?
When it does not snow?
What is the average length of the day in August?
When are sunrise and sunset in August?
What are the months with the most sunshine?
How long on average sun shines in August?
What is the month with the highest UV index?
How high is the UV index in August?
Average temperature in August
Rock City, IL
- Average high temperature in August: 78.3°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in August: 60.8°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in August
Rock City, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Rock City, IL
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in August
Rock City, IL
- Average humidity in August: 83%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in August
Rock City, IL
- Average rainfall in August: 1.69"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is December (0.83").
Average rainfall days in August
Rock City, IL
- Average rainfall days in August: 14.2 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in August
Rock City, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.99").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Rock City, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.3 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
Rock City, 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 6min).
- Average sunshine in August: 9h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in August
Rock City, IL
- Average sunshine days in August: 13.2 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in August
Rock City, IL
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Rock City, IL
- Average cloud cover in August: 33
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in August
Rock City, IL
- Average visibility in August: 5mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Rock City, Illinois, USA
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