August weather forecast
Calhoun, IL

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Weather in August

The last month of the summer, August, is another warm month in Calhoun, Illinois, with an average temperature varying between 65.7°F (18.7°C) and 82.8°F (28.2°C).

Temperature

The commencement of August introduces an average high-temperature of a still moderately hot 82.8°F (28.2°C), closely mirroring the preceding month. Calhoun, in the month of August, anticipates a consistent average low-temperature of 65.7°F (18.7°C).

Heat index

During August, the heat index is calculated to be a tropical 91.4°F (33°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

The average relative humidity in August in Calhoun is 80%.

Rainfall

In August, the rain falls for 13.2 days. Throughout August, 2.13" (54mm) of precipitation is accumulated. In Calhoun, during the entire year, the rain falls for 152.3 days and collects up to 27.99" (711mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 37min.
On the first day of August, 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.

Sunshine

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

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

During August, Calhoun experiences an average high-temperature of 82.8°F (28.2°C) and a low-temperature of 65.7°F (18.7°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is calculated 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 much does it rain in August?

In Calhoun, in August, it is raining for 13.2 days, with typically 2.13" (54mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in August?

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

When is the sunrise / sunset in August?

On the first day of August, 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?

The average sunshine duration in August is 10.3h.

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

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Calhoun, Illinois, USA

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