August weather forecast
Sycamore, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Sycamore, Illinois, with an average temperature fluctuating between 78.4°F (25.8°C) and 61.2°F (16.2°C).

Temperature

The transition from July to August sees average high-temperatures adjusting to a still warm 78.4°F (25.8°C), from a not significantly different 80.2°F (26.8°C). In Sycamore, in August, the average low-temperature is a comfortable 61.2°F (16.2°C).

Humidity

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

Rainfall

In August, the rain falls for 15.8 days. Throughout August, 2.72" (69mm) of precipitation is accumulated. In Sycamore, during the entire year, the rain falls for 152.6 days and collects up to 32.09" (815mm) of precipitation.

Snowfall

In Sycamore, snow does not fall in June through September.

Daylight

The average length of the day in August is 13h and 49min.
On the first day of the month, sunrise is at 5:49 am and sunset at 8:13 pm. On the last day of August, in Sycamore, sunrise is at 6:20 am and sunset at 7:29 pm CDT.

Sunshine

In Sycamore, Illinois, the average sunshine in August is 9.5h.

UV index

June and August, with an average maximum UV index of 6, are months with the highest UV index in Sycamore. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

What are August temperatures in Sycamore?

The average high-temperature, in August, in Sycamore, is 78.4°F (25.8°C), while the average low-temperature is 61.2°F (16.2°C).

What is the average humidity in August in Sycamore?

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

How much does it rain in Sycamore in August?

In Sycamore, in August, during 15.8 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.

When it does not snow in Sycamore?

June through September are months without snowfall in Sycamore.

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

The average day length in August in Sycamore, Illinois, is 13h and 49min.

When are sunrise and sunset in August in Sycamore?

In August, on the first day of the month, sunrise is at 5:49 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:29 pm CDT.

How long on average sun shines in August in Sycamore?

The average sunshine duration in August is 9.5h.

What is the month with the highest UV index in Sycamore?

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

What is the UV index intensity in August in Sycamore?

In August, the average daily maximum UV index in Sycamore is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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
Sycamore, IL

Average temperature in August - Sycamore, IL
  • Average high temperature in August: 78.4°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in August: 61.2°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

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Average pressure in August
Sycamore, IL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Sycamore, IL

Average wind speed in August - Sycamore, IL
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in August
Sycamore, IL

Average humidity in August - Sycamore, IL
  • Average humidity in August: 84%

The months with the highest relative humidity are January and July (85%).
The months with the lowest relative humidity are April and October (75%).

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Average rainfall in August
Sycamore, IL

Average rainfall in August - Sycamore, IL
  • Average rainfall in August: 2.72"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.65").

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Average rainfall days in August
Sycamore, IL

Average rainfall days in August - Sycamore, IL
  • Average rainfall days in August: 15.8 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.7 days).

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Average snowfall in August
Sycamore, IL

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

The month with the highest snowfall is January (5.55").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Sycamore, IL

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

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Sycamore, IL
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 9h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in August
Sycamore, IL

Average sunshine days in August - Sycamore, IL
  • Average sunshine days in August: 12.9 days

The month with the most sunshine days is November (17.2 days).
The months with the least sunshine days are June and July (10.3 days).

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Average UV index in August
Sycamore, IL

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

The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in August
Sycamore, IL

Average cloud cover in August - Sycamore, IL
  • Average cloud cover in August: 35

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).

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Average visibility in August
Sycamore, IL

Average visibility in August - Sycamore, IL
  • Average visibility in August: 5mi

The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).

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Sycamore, Illinois, USA

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