August weather forecast
Sheridan, IL

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Weather in August

The last month of the summer, August, is another warm month in Sheridan, Illinois, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.1°F (16.7°C).

Temperature

Sheridan's weather, upon August's arrival, documents an average high-temperature of a still moderately hot 79.3°F (26.3°C), nearly identical to the prior month. Throughout August, Sheridan witnesses a nighttime temperature average of 62.1°F (16.7°C).

Humidity

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

Rainfall

In Sheridan, Illinois, in August, during 9.8 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Sheridan, during the entire year, the rain falls for 97.4 days and collects up to 8.07" (205mm) of precipitation.

Snowfall

In Sheridan, snow does not fall in May through September.

Daylight

The average length of the day in August is 13h and 47min.
On the first day of the month, sunrise is at 5:50 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:20 am and sunset at 7:28 pm CDT.

Sunshine

August has the most sunshine of the year, with an average of 9.8h of sunshine.

UV index

The average daily maximum UV index in August in Sheridan, Illinois, is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 5 in August leads to these guidelines:
Heed the precautions - It is counselled to guard against solar damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

Sheridan in August has an average high-temperature of 79.3°F (26.3°C) and an average low-temperature of 62.1°F (16.7°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 87.8°F (31°C).

What is the average humidity in August?

In August, the average relative humidity is 84%.

How many days does it rain in August in Sheridan?

In Sheridan, in August, it is raining for 9.8 days, with typically 0.59" (15mm) of accumulated precipitation.

When it does not snow?

In Sheridan, snow does not fall in May through September.

What is the average length of the day in August?

In August, the average day length is 13h and 47min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 5:50 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:28 pm CDT.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 9.8h of sunshine.

How many hours of sunshine does Sheridan have in August?

The average sunshine duration in August is 9.8h.

What is the UV index reading in August?

In Sheridan, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium 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
Sheridan, IL

Average temperature in August - Sheridan, IL
  • Average high temperature in August: 79.3°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in August: 62.1°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in August
Sheridan, IL

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Sheridan, IL

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

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in August
Sheridan, IL

Average humidity in August - Sheridan, 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 (73%).

Average rainfall in August
Sheridan, IL

Average rainfall in August - Sheridan, IL
  • Average rainfall in August: 0.59"

The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is November (0.35").

Average rainfall days in August
Sheridan, IL

Average rainfall days in August - Sheridan, IL
  • Average rainfall days in August: 9.8 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (3 days).

Average snowfall in August
Sheridan, IL

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

The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Sheridan, IL

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

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Sheridan, 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 12min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in August
Sheridan, IL

Average sunshine days in August - Sheridan, IL
  • Average sunshine days in August: 18.4 days

The month with the most sunshine days is December (23 days).
The month with the least sunshine days is May (14.7 days).

Average UV index in August
Sheridan, IL

Average UV index in August - Sheridan, 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).

Average cloud cover in August
Sheridan, IL

Average cloud cover in August - Sheridan, IL
  • Average cloud cover in August: 34

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 33).

Average visibility in August
Sheridan, IL

Average visibility in August - Sheridan, 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).

Sheridan, Illinois, USA

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