August weather forecast
Gibson City, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Gibson City, Illinois, with an average temperature fluctuating between 79.7°F (26.5°C) and 62.8°F (17.1°C).

Temperature

The onset of August marks an average high-temperature of a still warm 79.7°F (26.5°C), hardly differing from July's 80.8°F (27.1°C). August witnesses an average low-temperature hovering around a comfortable 62.8°F (17.1°C).

Humidity

The average relative humidity in August is 83%.

Rainfall

In Gibson City, in August, during 13.2 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, there are 126.2 rainfall days, and 14.96" (380mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 44min.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:08 pm. On the last day of August, sunrise is at 6:20 am and sunset at 7:26 pm CDT.

Sunshine

In August, the average sunshine is 9.7h.

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 exposure to the Sun's UV rays for the average person.
Note: The UV index of 6 during August leads to these advisories:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures?

August temperatures vary between a high-temperature of 79.7°F (26.5°C) and a low-temperature of 62.8°F (17.1°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in July is appraised at 86°F (30°C).

What is the average humidity in August in Gibson City?

The average relative humidity in August in Gibson City is 83%.

How much does it rain in August?

In Gibson City, during August, the rain falls for 13.2 days and regularly aggregates up to 1.38" (35mm) of precipitation.

When it does not snow?

In Gibson City, 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 44min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:51 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:26 pm CDT.

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

In August, the average sunshine duration is 9.7h.

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 reading in August?

The average daily maximum UV index in August in Gibson City is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's 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
Gibson City, IL

Average temperature in August - Gibson City, IL
  • Average high temperature in August: 79.7°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in August: 62.8°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 (19.6°F).

Average pressure in August
Gibson City, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Gibson City, IL

Average wind speed in August - Gibson City, IL
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in August
Gibson City, IL

Average humidity in August - Gibson City, 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
Gibson City, IL

Average rainfall in August - Gibson City, IL
  • Average rainfall in August: 1.38"

The wettest month (with the highest rainfall) is May (1.93").
The driest months (with the least rainfall) are February and December (0.75").

Average rainfall days in August
Gibson City, IL

Average rainfall days in August - Gibson City, IL
  • Average rainfall days in August: 13.2 days

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in August
Gibson City, IL

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

The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Gibson City, IL

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

The month with the highest number of snowfall days is January (9.3 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
Gibson City, IL

Average daylight in August / Average sunshine in August - Gibson 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 4min

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

Average sunshine days in August
Gibson City, IL

Average sunshine days in August - Gibson City, IL
  • Average sunshine days in August: 13.5 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (10.3 days).

Average UV index in August
Gibson City, IL

Average UV index in August - Gibson City, IL
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in August
Gibson City, IL

Average cloud cover in August - Gibson City, IL
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 33).

Average visibility in August
Gibson City, IL

Average visibility in August - Gibson City, 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).

Gibson City, Illinois, USA

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