August weather forecast
Calhoun, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Calhoun, Illinois, with an average temperature fluctuating between 65.7°F (18.7°C) and 82.8°F (28.2°C).

Temperature

Calhoun starts August with an average high-temperature of a still warm 82.8°F (28.2°C), hinting at a minimal fluctuation from July. During August, Calhoun experiences an average low-temperature of 65.7°F (18.7°C) at night.

Heat index

The heat index in August is computed to be a tropical 91.4°F (33°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

The average relative humidity in August is 80%.

Rainfall

In Calhoun, in August, during 13.2 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. Throughout the year, in Calhoun, there are 152.3 rainfall days, and 27.99" (711mm) of precipitation is accumulated.

Snowfall

In Calhoun, snow does not fall in May through October.

Daylight

In Calhoun, the average length of the day in August is 13h and 37min.
On the first day of the month, sunrise is at 5:54 am and sunset at 8:02 pm. On the last day of August, sunrise is at 6:21 am and sunset at 7:23 pm CDT.

Sunshine

In Calhoun, Illinois, the average sunshine in August is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 6 in August transforms into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

Is it hot in Calhoun during August?

In Calhoun, in August, the average high-temperature is 82.8°F (28.2°C), and the average low-temperature is 65.7°F (18.7°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 91.4°F (33°C).

What is the average humidity in August in Calhoun?

The average relative humidity in August is 80%.

How many days does it rain in August in Calhoun?

In August, in Calhoun, Illinois, the rain falls for 13.2 days. Throughout August, 2.13" (54mm) of precipitation is accumulated.

When it does not snow in Calhoun?

In Calhoun, Illinois, snow does not fall in May through October.

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

In Calhoun, the average day length in August is 13h and 37min.

What time are sunrise and sunset in August in Calhoun?

On the first day of August in Calhoun, Illinois, sunrise is at 5:54 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 7:23 pm CDT.

How many hours of sunshine does Calhoun have in August?

In August, the average sunshine duration in Calhoun is 10.3h.

What are the months with the highest UV index in Calhoun?

The months with the highest UV index in Calhoun, Illinois, are May through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Calhoun?

The average daily maximum UV index in August in Calhoun, Illinois, is 6. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to 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
Calhoun, IL

Average temperature in August - Calhoun, IL
  • Average high temperature in August: 82.8°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in August: 65.7°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in August
Calhoun, IL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Calhoun, IL

Average wind speed in August - Calhoun, IL
  • Average wind speed in August: 6mph

The windiest months (with the highest average wind speed) are January and February (10.2mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

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Average humidity in August
Calhoun, IL

Average humidity in August - Calhoun, IL
  • Average humidity in August: 80%

The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Calhoun, IL

Average rainfall in August - Calhoun, IL
  • Average rainfall in August: 2.13"

The wettest month (with the highest rainfall) is April (4.09").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days in August
Calhoun, IL

Average rainfall days in August - Calhoun, IL
  • Average rainfall days in August: 13.2 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in August
Calhoun, IL

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

The month with the highest snowfall is January (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Calhoun, IL

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

The month with the highest number of snowfall days is January (5.9 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
Calhoun, IL

Average daylight in August / Average sunshine in August - Calhoun, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in August
Calhoun, IL

Average sunshine days in August - Calhoun, IL
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (11.2 days).

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Average UV index in August
Calhoun, IL

Average UV index in August - Calhoun, IL
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Calhoun, IL

Average cloud cover in August - Calhoun, IL
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 28).

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Average visibility in August
Calhoun, IL

Average visibility in August - Calhoun, IL
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Calhoun, Illinois, USA

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