August weather forecast
La Prairie, IL

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Weather in August

August, the last month of the summer in La Prairie, is also a moderately hot month, with an average temperature varying between 82.9°F (28.3°C) and 64.9°F (18.3°C).

Temperature

The commencement of August records an average high-temperature of a still warm 82.9°F (28.3°C), barely varying from July's 83.8°F (28.8°C). In La Prairie, August's nights observe an average temperature dip to an enjoyable 64.9°F (18.3°C).

Heat index

The heat index for August is estimated at a tropical 91.4°F (33°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

In La Prairie, the average relative humidity in August is 78%.

Rainfall

In La Prairie, during August, the rain falls for 13 days and regularly aggregates up to 2.01" (51mm) of precipitation. In La Prairie, during the entire year, the rain falls for 134.2 days and collects up to 23.15" (588mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in August is 13h and 43min.
On the first day of the month, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of August, sunrise is at 6:31 am and sunset at 7:36 pm CDT.

Sunshine

In August, the average sunshine is 10h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

In La Prairie, in August, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 64.9°F (18.3°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is estimated at 91.4°F (33°C).

What is the average humidity in August?

In La Prairie, the average relative humidity in August is 78%.

How much does it rain in August?

In La Prairie, in August, during 13 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

When it does not snow?

In La Prairie, snow does not fall in May through September.

What is the average length of the day in August?

In August, the average day length is 13h and 43min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:36 pm CDT.

How long on average sun shines in August?

In La Prairie, the average sunshine duration in August is 10h.

What is the month with the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
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
La Prairie, IL

Average temperature in August - La Prairie, IL
  • Average high temperature in August: 82.9°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in August
La Prairie, IL

Average pressure in August - La Prairie, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
La Prairie, IL

Average wind speed in August - La Prairie, IL
  • Average wind speed in August: 6.5mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

Average humidity in August
La Prairie, IL

Average humidity in August - La Prairie, IL
  • Average humidity in August: 78%

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
La Prairie, IL

Average rainfall in August - La Prairie, IL
  • Average rainfall in August: 2.01"

The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are January and December (1.02").

Average rainfall days in August
La Prairie, IL

Average rainfall days in August - La Prairie, IL
  • Average rainfall days in August: 13 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (5 days).

Average snowfall in August
La Prairie, IL

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

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
La Prairie, IL

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

The month with the highest number of snowfall days is January (8.8 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
La Prairie, IL

Average daylight in August / Average sunshine in August - La Prairie, 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 24min).

  • 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 18min).

Average sunshine days in August
La Prairie, IL

Average sunshine days in August - La Prairie, IL
  • Average sunshine days in August: 16.3 days

The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is June (11.1 days).

Average UV index in August
La Prairie, IL

Average UV index in August - La Prairie, 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
La Prairie, IL

Average cloud cover in August - La Prairie, IL
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in August
La Prairie, IL

Average visibility in August - La Prairie, 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).

La Prairie, Illinois, USA

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