August weather forecast
Sidney, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Sidney, Illinois, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 80.6°F (27°C).

Temperature

August's average high-temperature stands at a still moderately hot 80.6°F (27°C), showing little deviation from July's 81.1°F (27.3°C). The average low-temperature of 63.3°F (17.4°C) is witnessed in Sidney during August.

Heat index

The heat index value during August is estimated at a hot 86°F (30°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.
Data suggests that the heat index is set for environments in shade and with a light wind. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

In Sidney, Illinois, the average relative humidity in August is 83%.

Rainfall

In August, in Sidney, the rain falls for 13 days. Throughout August, 1.54" (39mm) of precipitation is accumulated. Throughout the year, in Sidney, there are 129.9 rainfall days, and 18.15" (461mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 42min.
On the first day of August, sunrise is at 5:51 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:24 pm CDT.

Sunshine

In Sidney, the average sunshine in August is 9.9h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What are August temperatures in Sidney?

An average high-temperature, in August, in Sidney, is 80.6°F (27°C) and the average low-temperature is 63.3°F (17.4°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 86°F (30°C).

What is the average humidity in August in Sidney?

In August, the average relative humidity is 83%.

How many days does it rain in August in Sidney?

In Sidney, Illinois, during August, the rain falls for 13 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When it does not snow in Sidney?

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

How many hours of daylight does Sidney have in August?

In Sidney, Illinois, the average day length in August is 13h and 42min.

When are sunrise and sunset in August in Sidney?

In August, on the first day of the month, sunrise is at 5:51 am and sunset at 8:05 pm. On the last day of the month, in Sidney, sunrise is at 6:19 am and sunset at 7:24 pm CDT.

How many hours of sunshine does Sidney have in August?

In August, the average sunshine duration in Sidney is 9.9h.

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

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

What is the UV index intensity in August in Sidney?

In August, the average daily maximum UV index in Sidney, Illinois, is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
Sidney, IL

Average temperature in August - Sidney, IL
  • Average high temperature in August: 80.6°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°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 (20.5°F).

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Average pressure in August
Sidney, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Sidney, IL

Average wind speed in August - Sidney, IL
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in August
Sidney, IL

Average humidity in August - Sidney, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Sidney, IL

Average rainfall in August - Sidney, IL
  • Average rainfall in August: 1.54"

The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").

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Average rainfall days in August
Sidney, IL

Average rainfall days in August - Sidney, IL
  • Average rainfall days in August: 13 days

The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6 days).

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Average snowfall in August
Sidney, IL

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

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Sidney, IL

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

The month with the highest number of snowfall days is January (8.7 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
Sidney, IL

Average daylight in August / Average sunshine in August - Sidney, 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 24min).

  • 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
Sidney, IL

Average sunshine days in August - Sidney, IL
  • Average sunshine days in August: 13.9 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in August
Sidney, IL

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

The months with the highest UV index are 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
Sidney, IL

Average cloud cover in August - Sidney, IL
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in August
Sidney, IL

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

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