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 commences with an average high-temperature of a moderately hot 84.7°F (29.3°C), showing little deviation from July's 86.5°F (30.3°C). Marissa reports an average low-temperature of 65.8°F (18.8°C) during the nights of August.Heat index
August's mean heat index is calculated to be a torrid 95°F (35°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Know that the heat index computations account for shaded terrains and slight winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
The average relative humidity in August is 78%.Rainfall
In Marissa, during August, the rain falls for 12.5 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Marissa, during the entire year, the rain falls for 129.6 days and collects up to 19.09" (485mm) of precipitation.Snowfall
April through August are months without snowfall.Daylight
In August, the average length of the day is 13h and 36min.On the first day of August, sunrise is at 6:02 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:29 pm CDT.
Sunshine
In Marissa, Illinois, the average sunshine in August is 10.3h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.Note: In August, a regular UV index of 6 translates into these guidelines:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
How hot does it get in Marissa in August?
What is the average humidity in August in Marissa?
How much does it rain in Marissa in August?
When it does not snow in Marissa?
Does it snow in Marissa in August?
What is the average length of the day in August in Marissa?
What time are sunrise and sunset in August in Marissa?
How long on average sun shines in August in Marissa?
When is the highest UV index in Marissa?
How high is the UV index in August in Marissa?
Average temperature in August
Marissa, IL
- Average high temperature in August: 84.7°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in August: 65.8°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in August
Marissa, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Marissa, IL
- Average wind speed in August: 5.6mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in August
Marissa, IL
- Average humidity in August: 78%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Marissa, IL
- Average rainfall in August: 2.05"
The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in August
Marissa, IL
- Average rainfall days in August: 12.5 days
The month with the highest number of rainy days is July (15.1 days).
The months with the least rainy days are January and December (6.5 days).
Average snowfall in August
Marissa, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.06").
The months with the least snowfall are April, May, June, July and August (0").
Average snowfall days in August
Marissa, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Marissa, IL
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 10h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in August
Marissa, IL
- Average sunshine days in August: 15.7 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is July (13.7 days).
Average UV index in August
Marissa, IL
- Average UV index in August: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Marissa, IL
- Average cloud cover in August: 27
The months with the most cloud cover are January and February (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in August
Marissa, IL
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Marissa, Illinois, USA
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