August weather forecast
Fairbury, IL

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Weather in August

August, the last month of the summer in Fairbury, is also a moderately hot month, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 62.6°F (17°C).

Temperature

July's transformation into August witnesses an average high-temperature of a still warm 79.7°F (26.5°C), noting a minor change from the preceding month. An average minimum temperature of 62.6°F (17°C) is recorded during the month of August.

Humidity

The average relative humidity in August in Fairbury is 83%.

Rainfall

In August, in Fairbury, the rain falls for 13.3 days. Throughout August, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 130.5 rainfall days, and 17.44" (443mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Fairbury.

Daylight

In August, the average length of the day is 13h and 45min.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:09 pm. On the last day of August, in Fairbury, Illinois, sunrise is at 6:20 am and sunset at 7:27 pm CDT.

Sunshine

In August, the average sunshine in Fairbury is 9.8h.

UV index

In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 5 in August transforms into this advice:
Exercise prevention - Precautions against solar damage are endorsed. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

What is the average August temperature in Fairbury?

The high-temperature, in August, in Fairbury, records 79.7°F (26.5°C), while the low-temperature is 62.6°F (17°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in July is estimated at 87.8°F (31°C).

What is the average humidity in August in Fairbury?

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

How much does it rain in Fairbury in August?

In Fairbury, in August, it is raining for 13.3 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow in Fairbury?

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

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

In August, the average day length is 13h and 45min.

When are sunrise and sunset in August in Fairbury?

On the first day of August in Fairbury, sunrise is at 5:51 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:27 pm CDT.

How many hours of sunshine does Fairbury have in August?

In Fairbury, Illinois, the average sunshine duration in August is 9.8h.

What is the UV index intensity in August in Fairbury?

In Fairbury, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes 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
Fairbury, IL

Average temperature in August - Fairbury, 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 (30.6°F).

  • Average low temperature in August: 62.6°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).

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Average pressure in August
Fairbury, IL

Average pressure in August - Fairbury, 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).

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Average wind speed in August
Fairbury, IL

Average wind speed in August - Fairbury, IL
  • Average wind speed in August: 6.4mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in August
Fairbury, IL

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

The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Fairbury, IL

Average rainfall in August - Fairbury, IL
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.79").

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Average rainfall days in August
Fairbury, IL

Average rainfall days in August - Fairbury, IL
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is May (17 days).
The months with the least rainy days are January and February (5 days).

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Average snowfall in August
Fairbury, IL

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

The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Fairbury, IL

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

The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Fairbury, IL

Average daylight in August / Average sunshine in August - Fairbury, 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 month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in August
Fairbury, IL

Average sunshine days in August - Fairbury, IL
  • Average sunshine days in August: 13.5 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.4 days).

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Average UV index in August
Fairbury, IL

Average UV index in August - Fairbury, 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).

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Average cloud cover in August
Fairbury, IL

Average cloud cover in August - Fairbury, 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).

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Average visibility in August
Fairbury, IL

Average visibility in August - Fairbury, 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).

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Fairbury, Illinois, USA

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