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 reveals an average high-temperature of a still warm 80.2°F (26.8°C), mirroring a close resemblance to July. Randolph observes an average nighttime low-temperature of 63.3°F (17.4°C) during the month of August.Humidity
The average relative humidity in August is 83%.Rainfall
In August, the rain falls for 11.8 days. Throughout August, 1.26" (32mm) of precipitation is accumulated. In Randolph, during the entire year, the rain falls for 124.4 days and collects up to 13.23" (336mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Randolph, the average length of the day in August is 13h and 43min.On the first day of August, sunrise is at 5:54 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:28 pm CDT.
Sunshine
In August, the average sunshine is 9.8h.UV index
The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 5 during August leads to these instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Randolph 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 is the sunrise / sunset in August in Randolph?
How many hours of sunshine does Randolph have in August?
What is the UV index reading in August?
Average temperature in August
Randolph, IL
- Average high temperature in August: 80.2°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in August: 63.3°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 (19.8°F).
Average pressure in August
Randolph, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Randolph, IL
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in August
Randolph, 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 (71%).
Average rainfall in August
Randolph, IL
- Average rainfall in August: 1.26"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in August
Randolph, IL
- Average rainfall days in August: 11.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in August
Randolph, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Randolph, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Randolph, IL
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 9h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in August
Randolph, IL
- Average sunshine days in August: 15.5 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in August
Randolph, IL
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Randolph, IL
- Average cloud cover in August: 31
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 31).
Average visibility in August
Randolph, 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).
Randolph, Illinois, USA
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