August weather forecast
Cissna Park, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Cissna Park, Illinois, with temperature in the range of an average low of 62.6°F (17°C) and an average high of 79.5°F (26.4°C).

Temperature

Cissna Park's shift from July to August is accompanied by an average high-temperature of a still moderately hot 79.5°F (26.4°C), a slight deviation from 81°F (27.2°C). During August, an average low-temperature of 62.6°F (17°C) is observed.

Humidity

The average relative humidity in August in Cissna Park is 84%.

Rainfall

In Cissna Park, during August, the rain falls for 13.8 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Cissna Park, during the entire year, the rain falls for 143.2 days and collects up to 22.24" (565mm) of precipitation.

Snowfall

In Cissna Park, snow does not fall in May through September.

Daylight

The average length of the day in August is 13h and 44min.
On the first day of the month, sunrise is at 5:49 am and sunset at 8:06 pm. On the last day of August, in Cissna Park, sunrise is at 6:18 am and sunset at 7:24 pm CDT.

Sunshine

The average sunshine in August is 9.8h.

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 hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 6 in August transforms into this advice:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

What is the temperature in August in Cissna Park?

An average high-temperature, in August, in Cissna Park, is 79.5°F (26.4°C) and the average low-temperature is 62.6°F (17°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 87.8°F (31°C).

What is the average humidity in August in Cissna Park?

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

How much does it rain in Cissna Park in August?

In Cissna Park, during August, the rain falls for 13.8 days and regularly aggregates up to 1.93" (49mm) of precipitation.

When it does not snow in Cissna Park?

May through September are months without snowfall.

What is the average length of the day in August in Cissna Park?

In Cissna Park, the average day length in August is 13h and 44min.

When is the sunrise / sunset in August in Cissna Park?

In August, on the first day of the month, sunrise is at 5:49 am and sunset at 8:06 pm. On the last day of the month, in Cissna Park, Illinois, sunrise is at 6:18 am and sunset at 7:24 pm CDT.

How long on average sun shines in August in Cissna Park?

The average sunshine duration in August in Cissna Park is 9.8h.

What is the month with the highest UV index in Cissna Park?

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

What is the UV index intensity in August in Cissna Park?

In Cissna Park, Illinois, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's 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
Cissna Park, IL

Average temperature in August - Cissna Park, IL
  • Average high temperature in August: 79.5°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in August: 62.6°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 (19°F).

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Average pressure in August
Cissna Park, IL

Average pressure in August - Cissna Park, 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 (29.93"Hg).

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Average wind speed in August
Cissna Park, IL

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

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

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Average humidity in August
Cissna Park, IL

Average humidity in August - Cissna Park, 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 (71%).

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Average rainfall in August
Cissna Park, IL

Average rainfall in August - Cissna Park, IL
  • Average rainfall in August: 1.93"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").

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Average rainfall days in August
Cissna Park, IL

Average rainfall days in August - Cissna Park, IL
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (6.4 days).

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Average snowfall in August
Cissna Park, IL

Average snowfall in August - Cissna Park, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.91").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Cissna Park, IL

Average snowfall days in August - Cissna Park, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (10.4 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
Cissna Park, IL

Average daylight in August / Average sunshine in August - Cissna Park, 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 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
Cissna Park, IL

Average sunshine days in August - Cissna Park, IL
  • Average sunshine days in August: 13.5 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in August
Cissna Park, IL

Average UV index in August - Cissna Park, 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
Cissna Park, IL

Average cloud cover in August - Cissna Park, IL
  • Average cloud cover in August: 33

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 33).

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Average visibility in August
Cissna Park, IL

Average visibility in August - Cissna Park, 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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Cissna Park, Illinois, USA

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