August weather forecast
Prairie City, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Prairie City, Illinois, with an average temperature varying between 81.1°F (27.3°C) and 63.3°F (17.4°C).

Temperature

Stepping into August, Prairie City records an average high-temperature of a still warm 81.1°F (27.3°C), almost consistent with July. In Prairie City, the August nights cool down to an average low of 63.3°F (17.4°C).

Heat index

The average heat index in August is estimated at a tropical 87.8°F (31°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Prairie City, the average relative humidity in August is 81%.

Rainfall

In Prairie City, during August, the rain falls for 12.1 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, in Prairie City, there are 126 rainfall days, and 14.45" (367mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Prairie City.

Daylight

In August, the average length of the day in Prairie City is 13h and 44min.
On the first day of August in Prairie City, Illinois, sunrise is at 5:59 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:35 pm CDT.

Sunshine

In Prairie City, the average sunshine in August is 9.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Prairie City. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Prairie City in August?

An average high-temperature, in August, in Prairie City, is 81.1°F (27.3°C) and the average low-temperature is 63.3°F (17.4°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is estimated at 87.8°F (31°C).

What is the average humidity in August in Prairie City?

In August, the average relative humidity in Prairie City is 81%.

How many days does it rain in August in Prairie City?

In Prairie City, in August, during 12.1 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When it does not snow in Prairie City?

May through September are months without snowfall in Prairie City.

How many hours of daylight does Prairie City have in August?

The average day length in August is 13h and 44min.

When are sunrise and sunset in August in Prairie City?

In August, on the first day of the month, sunrise is at 5:59 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:35 pm CDT.

How many hours of sunshine does Prairie City have in August?

In Prairie City, the average sunshine duration in August is 9.9h.

What are the months with the highest UV index in Prairie City?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in August in Prairie City?

In August, the average daily maximum UV index in Prairie City, Illinois, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Prairie City, IL

Average temperature in August - Prairie City, IL
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.8°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 (17.8°F).

Average pressure in August
Prairie City, IL

Average pressure in August - Prairie City, 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 (29.91"Hg).

Average wind speed in August
Prairie City, IL

Average wind speed in August - Prairie City, IL
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in August
Prairie City, IL

Average humidity in August - Prairie City, IL
  • Average humidity in August: 81%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Prairie City, IL

Average rainfall in August - Prairie City, IL
  • Average rainfall in August: 1.18"

The wettest month (with the highest rainfall) is May (2.2").
The driest months (with the least rainfall) are January and December (0.59").

Average rainfall days in August
Prairie City, IL

Average rainfall days in August - Prairie City, IL
  • Average rainfall days in August: 12.1 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4.4 days).

Average snowfall in August
Prairie City, IL

Average snowfall in August - Prairie City, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.26").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Prairie City, IL

Average snowfall days in August - Prairie City, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (10.3 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
Prairie City, IL

Average daylight in August / Average sunshine in August - Prairie City, 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 months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in August
Prairie City, IL

Average sunshine days in August - Prairie City, IL
  • Average sunshine days in August: 14.8 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.2 days).

Average UV index in August
Prairie City, IL

Average UV index in August - Prairie City, 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, February, November and December (UV index 2).

Average cloud cover in August
Prairie City, IL

Average cloud cover in August - Prairie City, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in August
Prairie City, IL

Average visibility in August - Prairie City, 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).

Prairie City, Illinois, USA

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