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 initiation of August sees an average high-temperature of a still moderately hot 81°F (27.2°C), showing minor variations from the previous month. Mannon's average low-temperature in August is measured at an enjoyable 63.1°F (17.3°C).Heat index
For August, the heat index is estimated at a tropical 86°F (30°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
In August, the average relative humidity is 80%.Rainfall
In Mannon, Illinois, in August, it is raining for 10.6 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, in Mannon, there are 121.3 rainfall days, and 17.72" (450mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Mannon, Illinois.Daylight
In August, the average length of the day is 13h and 46min.On the first day of the month, sunrise is at 6:00 am and sunset at 8:20 pm. On the last day of August, in Mannon, sunrise is at 6:30 am and sunset at 7:37 pm CDT.
Sunshine
The average sunshine in August in Mannon is 10h.UV index
The average daily maximum UV index in August in Mannon is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 5 in August translates into the following instructions:
Take precautions - Protection against sun damage is advised. Around midday, solar radiation is most harmful; hence, exposure should be limited. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Mannon in August?
What is the average humidity in August in Mannon?
How much does it rain in Mannon in August?
When it does not snow in Mannon?
How many hours of daylight does Mannon have in August?
When are sunrise and sunset in August in Mannon?
How long on average sun shines in August in Mannon?
What is the UV index reading in August in Mannon?
Average temperature in August
Mannon, IL
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in August: 63.1°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 (16.9°F).
Average pressure in August
Mannon, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Mannon, IL
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in August
Mannon, IL
- Average humidity in August: 80%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Mannon, IL
- Average rainfall in August: 1.18"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in August
Mannon, IL
- Average rainfall days in August: 10.6 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in August
Mannon, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Mannon, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (7.8 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
Mannon, 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 18min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in August
Mannon, IL
- Average sunshine days in August: 17.6 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in August
Mannon, 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
Mannon, IL
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in August
Mannon, IL
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Mannon, Illinois, USA
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