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
August's onset records a minor alteration in the average high-temperature to a still moderately hot 79.5°F (26.4°C) from July's 80.2°F (26.8°C). In the month of August, Walnut witnesses a consistent average low-temperature of 62.1°F (16.7°C).Humidity
In August, the average relative humidity is 83%.Rainfall
In August, the rain falls for 11.5 days. Throughout August, 1.02" (26mm) of precipitation is accumulated. In Walnut, during the entire year, the rain falls for 114.5 days and collects up to 12.72" (323mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Walnut, 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 8:15 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:32 pm CDT.
Sunshine
The months with the most sunshine are June through August, with an average of 9.6h of sunshine.UV index
In August, the average daily maximum UV index in Walnut is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 5 during August translates into the following guidance:
Put precautions into practice - Protective measures against sun-induced damage are advised. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Walnut in August?
What is the average humidity in August?
How much does it rain in Walnut in August?
When it does not snow in Walnut?
How many hours of daylight does Walnut have in August?
When is the sunrise / sunset in August in Walnut?
What is the month with the most sunshine?
How many hours of sunshine does Walnut have in August?
What is the UV index reading in August?
Average temperature in August
Walnut, IL
- Average high temperature in August: 79.5°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in August: 62.1°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 (15.6°F).
Average pressure in August
Walnut, 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
Walnut, IL
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in August
Walnut, 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 (73%).
Average rainfall in August
Walnut, IL
- Average rainfall in August: 1.02"
The wettest month (with the highest rainfall) is May (2.01").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in August
Walnut, IL
- Average rainfall days in August: 11.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in August
Walnut, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Walnut, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.1 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
Walnut, 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 4min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Walnut, IL
- Average sunshine days in August: 16.1 days
The month with the most sunshine days is December (20.8 days).
The month with the least sunshine days is June (13.5 days).
Average UV index in August
Walnut, IL
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Walnut, IL
- Average cloud cover in August: 33
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in August
Walnut, 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).
Walnut, Illinois, USA
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