August weather forecast
Cornell, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Cornell, Illinois, with an average temperature ranging between max 80.1°F (26.7°C) and min 62.4°F (16.9°C).

Temperature

The arrival of August brings an average high-temperature of a still moderately hot 80.1°F (26.7°C), closely following the temperature pattern of July. Cornell's temperature in August lowers to a consistent average of 62.4°F (16.9°C) during the nights.

Humidity

In Cornell, Illinois, the average relative humidity in August is 83%.

Rainfall

In Cornell, Illinois, in August, during 12.8 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 125.3 rainfall days, and 15.71" (399mm) of precipitation is accumulated.

Snowfall

In Cornell, Illinois, snow does not fall in May through September.

Daylight

The average length of the day in August in Cornell, Illinois, is 13h and 46min.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:10 pm. On the last day of August, in Cornell, sunrise is at 6:21 am and sunset at 7:28 pm CDT.

Sunshine

The months with the most sunshine are June and August, with an average of 9.8h of sunshine.

UV index

In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In August, an average UV index of 5 transforms into the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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 Cornell in August?

In Cornell, 80.1°F (26.7°C) is the average high-temperature and 62.4°F (16.9°C) is the average low-temperature during August. In July, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is computed to be 87.8°F (31°C).

What is the average humidity in August in Cornell?

The average relative humidity in August in Cornell, Illinois, is 83%.

How much does it rain in Cornell in August?

In Cornell, Illinois, during August, the rain falls for 12.8 days and regularly aggregates up to 1.3" (33mm) of precipitation.

When it does not snow in Cornell?

In Cornell, Illinois, snow does not fall in May through September.

How many hours of daylight does Cornell have in August?

In Cornell, Illinois, the average day length in August is 13h and 46min.

When are sunrise and sunset in August in Cornell?

In August, on the first day of the month, sunrise is at 5:51 am and sunset at 8:10 pm. On the last day of the month, in Cornell, Illinois, sunrise is at 6:21 am and sunset at 7:28 pm CDT.

What are the months with the most sunshine in Cornell?

June and August, with an average of 9.8h of sunshine, are months with the most sunshine in Cornell, Illinois.

How long on average sun shines in August in Cornell?

The average sunshine duration in August is 9.8h.

What is the UV index reading in August in Cornell?

In Cornell, Illinois, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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
Cornell, IL

Average temperature in August - Cornell, IL
  • Average high temperature in August: 80.1°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.2°F).

  • Average low temperature in August: 62.4°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

Average pressure in August
Cornell, IL

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Cornell, IL

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

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in August
Cornell, IL

Average humidity in August - Cornell, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Cornell, IL

Average rainfall in August - Cornell, IL
  • Average rainfall in August: 1.3"

The wettest month (with the highest rainfall) is May (2.44").
The driest months (with the least rainfall) are January and February (0.71").

Average rainfall days in August
Cornell, IL

Average rainfall days in August - Cornell, IL
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in August
Cornell, IL

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

The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Cornell, IL

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

The month with the highest number of snowfall days is January (10.2 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
Cornell, IL

Average daylight in August / Average sunshine in August - Cornell, 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: 9h and 5min

The months with the most sunshine are June and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in August
Cornell, IL

Average sunshine days in August - Cornell, IL
  • Average sunshine days in August: 14.4 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in August
Cornell, IL

Average UV index in August - Cornell, 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 December (UV index 1).

Average cloud cover in August
Cornell, IL

Average cloud cover in August - Cornell, IL
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).

Average visibility in August
Cornell, IL

Average visibility in August - Cornell, 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).

Cornell, Illinois, USA

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