August weather forecast
Trivoli, IL

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Weather in August

The last month of the summer, August, is another warm month in Trivoli, Illinois, with an average temperature fluctuating between 63.3°F (17.4°C) and 81.1°F (27.3°C).

Temperature

August is marked by an average high-temperature of a still warm 81.1°F (27.3°C), almost identical to the preceding month. Trivoli experiences a steady low-temperature of 63.3°F (17.4°C) throughout August.

Heat index

Throughout August, the heat index is estimated at a hot 87.8°F (31°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

In August, the average relative humidity in Trivoli, Illinois, is 81%.

Rainfall

In Trivoli, in August, during 13.7 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Trivoli, during the entire year, the rain falls for 145.3 days and collects up to 28.62" (727mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 44min.
On the first day of August, sunrise is at 5:57 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:32 pm CDT.

Sunshine

The average sunshine in August is 9.9h.

UV index

In August, the average daily maximum UV index in Trivoli is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 5 during August translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

What is the temperature in August in Trivoli?

In August, in Trivoli, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 63.3°F (17.4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is estimated at 87.8°F (31°C).

What is the average humidity in August in Trivoli?

In August, the average relative humidity in Trivoli, Illinois, is 81%.

How much does it rain in Trivoli in August?

In Trivoli, Illinois, in August, it is raining for 13.7 days, with typically 1.89" (48mm) of accumulated precipitation.

When it does not snow in Trivoli?

May through September are months without snowfall in Trivoli, Illinois.

How many hours of daylight does Trivoli have in August?

In Trivoli, Illinois, the average day length in August is 13h and 44min.

When is the sunrise / sunset in August in Trivoli?

In August, on the first day of the month, sunrise is at 5:57 am and sunset at 8:14 pm. On the last day of the month, in Trivoli, sunrise is at 6:26 am and sunset at 7:32 pm CDT.

How many hours of sunshine does Trivoli have in August?

The average sunshine duration in August is 9.9h.

How high is the UV index in August in Trivoli?

The average daily maximum UV index in August in Trivoli, Illinois, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Trivoli, IL

Average temperature in August - Trivoli, IL
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in August
Trivoli, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Trivoli, IL

Average wind speed in August - Trivoli, IL
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in August
Trivoli, IL

Average humidity in August - Trivoli, IL
  • Average humidity in August: 81%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in August
Trivoli, IL

Average rainfall in August - Trivoli, IL
  • Average rainfall in August: 1.89"

The wettest month (with the highest rainfall) is May (4.29").
The driest months (with the least rainfall) are February and December (1.42").

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Average rainfall days in August
Trivoli, IL

Average rainfall days in August - Trivoli, IL
  • Average rainfall days in August: 13.7 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall in August
Trivoli, IL

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

The month with the highest snowfall is January (3.78").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Trivoli, IL

Average snowfall days in August - Trivoli, 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
Trivoli, IL

Average daylight in August / Average sunshine in August - Trivoli, 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: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in August
Trivoli, IL

Average sunshine days in August - Trivoli, IL
  • Average sunshine days in August: 15.5 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (11.3 days).

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Average UV index in August
Trivoli, IL

Average UV index in August - Trivoli, 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).

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Average cloud cover in August
Trivoli, IL

Average cloud cover in August - Trivoli, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).

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Average visibility in August
Trivoli, IL

Average visibility in August - Trivoli, 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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Trivoli, Illinois, USA

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