August weather forecastMark, IL
August
Weather in August
The last month of the summer, August, is another warm month in Mark, Illinois, with an average temperature varying between 61.9°F (16.6°C) and 79.7°F (26.5°C).Temperature
The shift into August records an average high-temperature of a still warm 79.7°F (26.5°C), subtly varied from July's 80.8°F (27.1°C). In the month of August, Mark records a consistent average low-temperature of 61.9°F (16.6°C).Humidity
In Mark, the average relative humidity in August is 83%.Rainfall
In Mark, in August, it is raining for 13.9 days, with typically 2.2" (56mm) of accumulated precipitation. In Mark, during the entire year, the rain falls for 152.7 days and collects up to 30.79" (782mm) of precipitation.Snowfall
May through September are months without snowfall in Mark.Daylight
The average length of the day in August is 13h and 47min.On the first day of the month, sunrise is at 5:53 am and sunset at 8:13 pm. On the last day of August, in Mark, sunrise is at 6:23 am and sunset at 7:30 pm CDT.
Sunshine
June through August, with an average of 9.8h of sunshine, are months with the most sunshine in Mark, Illinois.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.Note: In August, an average UV index of 6 transforms into the following instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Mark, 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
Mark, 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
Mark, 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
Mark, 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
Mark, 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
Mark, 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
Mark, 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
Mark, 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
Mark, IL
- Average daylight in August: 13h and 48min
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 48min
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
Mark, 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
Mark, 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
Mark, 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
Mark, 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).
