August weather forecast
Mendota, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Mendota, Illinois, with an average temperature varying between 62.1°F (16.7°C) and 79.2°F (26.2°C).

Temperature

The commencement of August brings an average high-temperature of a still moderately hot 79.2°F (26.2°C), marking an inconsequential divergence from July. In Mendota, an average temperature of 62.1°F (16.7°C) is noted during August nights.

Humidity

In August, the average relative humidity in Mendota is 84%.

Rainfall

In Mendota, during August, the rain falls for 12.2 days and regularly aggregates up to 0.87" (22mm) of precipitation. In Mendota, during the entire year, the rain falls for 107.9 days and collects up to 9.96" (253mm) of precipitation.

Snowfall

In Mendota, snow does not fall in May through September.

Daylight

In Mendota, the average length of the day in August is 13h and 47min.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:13 pm. On the last day of August, sunrise is at 6:22 am and sunset at 7:30 pm CDT.

Sunshine

The months with the most sunshine are June through August, with an average of 9.5h of sunshine.

UV index

In Mendota, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 5 in August translates into these instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Mendota?

In Mendota, in August, the average high-temperature is 79.2°F (26.2°C), and the average low-temperature is 62.1°F (16.7°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is appraised at 86°F (30°C).

What is the average humidity in August in Mendota?

The average relative humidity in August is 84%.

How many days does it rain in August in Mendota?

In Mendota, Illinois, in August, it is raining for 12.2 days, with typically 0.87" (22mm) of accumulated precipitation.

When it does not snow in Mendota?

May through September are months without snowfall.

What is the average length of the day in August in Mendota?

In August, the average day length is 13h and 47min.

When is the sunrise / sunset in August in Mendota?

On the first day of August in Mendota, Illinois, sunrise is at 5:51 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:30 pm CDT.

What are the months with the most sunshine in Mendota?

The months with the most sunshine in Mendota are June through August, with an average of 9.5h of sunshine.

How long on average sun shines in August in Mendota?

In Mendota, the average sunshine duration in August is 9.5h.

How high is the UV index in August in Mendota?

In August, the average daily maximum UV index in Mendota is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Mendota, IL

Average temperature in August - Mendota, IL
  • Average high temperature in August: 79.2°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.6°F).

  • Average low temperature in August: 62.1°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 (16.7°F).

Average pressure in August
Mendota, IL

Average pressure in August - Mendota, IL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Mendota, IL

Average wind speed in August - Mendota, IL
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in August
Mendota, IL

Average humidity in August - Mendota, IL
  • Average humidity in August: 84%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (73%).

Average rainfall in August
Mendota, IL

Average rainfall in August - Mendota, IL
  • Average rainfall in August: 0.87"

The wettest month (with the highest rainfall) is May (1.42").
The driest months (with the least rainfall) are January, February, November and December (0.51").

Average rainfall days in August
Mendota, IL

Average rainfall days in August - Mendota, IL
  • Average rainfall days in August: 12.2 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.6 days).

Average snowfall in August
Mendota, IL

Average snowfall in August - Mendota, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Mendota, IL

Average snowfall days in August - Mendota, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (8.6 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
Mendota, IL

Average daylight in August / Average sunshine in August - Mendota, 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 12min).

  • Average sunshine in August: 9h and 3min

The months with the most sunshine are June, July and August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in August
Mendota, IL

Average sunshine days in August - Mendota, IL
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in August
Mendota, IL

Average UV index in August - Mendota, IL
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in August
Mendota, IL

Average cloud cover in August - Mendota, IL
  • Average cloud cover in August: 35

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 33).

Average visibility in August
Mendota, IL

Average visibility in August - Mendota, IL
  • Average visibility in August: 5mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

Mendota, Illinois, USA

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