August weather forecast
Streator, IL

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Weather in August

August, the last month of the summer in Streator, is another warm month, with an average temperature varying between 79.7°F (26.5°C) and 62.2°F (16.8°C).

Temperature

Streator experiences an average high-temperature of a still warm 79.7°F (26.5°C) in August, subtly different from July's 81°F (27.2°C). During the nights in August, the temperature averages to an enjoyable 62.2°F (16.8°C).

Humidity

The average relative humidity in August in Streator is 84%.

Rainfall

In August, in Streator, the rain falls for 16.4 days. Throughout August, 2.28" (58mm) of precipitation is accumulated. Throughout the year, in Streator, there are 145 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In Streator, Illinois, the average length of the day in August is 13h and 46min.
On the first day of August, sunrise is at 5:51 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 7:29 pm CDT.

Sunshine

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

UV index

In August, the average daily maximum UV index in Streator is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 5 in August leads to these recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. To protect against the Sun's most potent rays, avoid direct exposure around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What is the average August temperature in Streator?

In Streator, 79.7°F (26.5°C) is the average high-temperature and 62.2°F (16.8°C) is the average low-temperature during August. In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 87.8°F (31°C).

What is the average humidity in August in Streator?

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

How much does it rain in Streator in August?

In Streator, Illinois, in August, it is raining for 16.4 days, with typically 2.28" (58mm) of accumulated precipitation.

When it does not snow in Streator?

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

How many hours of daylight does Streator have in August?

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

What time are sunrise and sunset in August in Streator?

In August, on the first day of the month, sunrise is at 5:51 am and sunset at 8:11 pm. On the last day of the month, in Streator, Illinois, sunrise is at 6:21 am and sunset at 7:29 pm CDT.

How long on average sun shines in August in Streator?

In August, the average sunshine duration is 9.8h.

What is the UV index reading in August in Streator?

The average daily maximum UV index in August in Streator, Illinois, is 5. A UV Index 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
Streator, IL

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

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).

  • Average low temperature in August: 62.2°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

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Average pressure in August
Streator, IL

Average pressure in August - Streator, 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
Streator, IL

Average wind speed in August - Streator, IL
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in August
Streator, IL

Average humidity in August - Streator, 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 (72%).

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Average rainfall in August
Streator, IL

Average rainfall in August - Streator, IL
  • Average rainfall in August: 2.28"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (1.18").

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Average rainfall days in August
Streator, IL

Average rainfall days in August - Streator, IL
  • Average rainfall days in August: 16.4 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (5.3 days).

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Average snowfall in August
Streator, IL

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

The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Streator, IL

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

The month with the highest number of snowfall days is January (11.8 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
Streator, IL

Average daylight in August / Average sunshine in August - Streator, 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 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
Streator, IL

Average sunshine days in August - Streator, IL
  • Average sunshine days in August: 11.1 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (9.2 days).

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Average UV index in August
Streator, IL

Average UV index in August - Streator, 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
Streator, IL

Average cloud cover in August - Streator, IL
  • Average cloud cover in August: 32

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

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Average visibility in August
Streator, IL

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

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