August weather forecast
Glenwood, IL

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Weather in August

August, the last month of the summer in Glenwood, is also a moderately hot month, with an average temperature fluctuating between 80.1°F (26.7°C) and 64.6°F (18.1°C).

Temperature

The onset of August marks an average high-temperature of a still warm 80.1°F (26.7°C), hardly differing from July's 81.3°F (27.4°C). The nighttime temperature in Glenwood, during August, averages of 64.6°F (18.1°C).

Humidity

The average relative humidity in August is 78%.

Rainfall

In August, in Glenwood, the rain falls for 14.8 days. Throughout August, 2.56" (65mm) of precipitation is accumulated. Throughout the year, in Glenwood, there are 155.6 rainfall days, and 31.3" (795mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Glenwood, the average length of the day in August is 13h and 47min.
On the first day of August, sunrise is at 5:45 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:24 pm CDT.

Sunshine

With an average of 10.1h of sunshine, August has the most sunshine of the year.

UV index

In August, the average daily maximum UV index in Glenwood, Illinois, is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions

What is the usual temperature for Glenwood in August?

In August, the average high-temperature and low-temperature in Glenwood are 80.1°F (26.7°C) and 64.6°F (18.1°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in July is estimated at 87.8°F (31°C).

What is the average humidity in August in Glenwood?

In Glenwood, Illinois, the average relative humidity in August is 78%.

How many days does it rain in August in Glenwood?

In Glenwood, Illinois, during August, the rain falls for 14.8 days and regularly aggregates up to 2.56" (65mm) of precipitation.

When it does not snow in Glenwood?

May through September are months without snowfall.

How many hours of daylight does Glenwood have in August?

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

When is the sunrise / sunset in August in Glenwood?

On the first day of August in Glenwood, Illinois, sunrise is at 5:45 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:24 pm CDT.

What month has the most sunshine in Glenwood?

August has the most sunshine of the year in Glenwood, with an average of 10.1h of sunshine.

How many hours of sunshine does Glenwood have in August?

The average sunshine duration in August in Glenwood, Illinois, is 10.1h.

How high is the UV index in August in Glenwood?

The average daily maximum UV index in August in Glenwood is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to 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
Glenwood, IL

Average temperature in August - Glenwood, IL
  • Average high temperature in August: 80.1°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in August: 64.6°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in August
Glenwood, IL

Average pressure in August - Glenwood, 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
Glenwood, IL

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

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in August
Glenwood, IL

Average humidity in August - Glenwood, IL
  • Average humidity in August: 78%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in August
Glenwood, IL

Average rainfall in August - Glenwood, IL
  • Average rainfall in August: 2.56"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").

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Average rainfall days in August
Glenwood, IL

Average rainfall days in August - Glenwood, IL
  • Average rainfall days in August: 14.8 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).

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Average snowfall in August
Glenwood, IL

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

The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Glenwood, IL

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

The month with the highest number of snowfall days is January (12.6 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
Glenwood, IL

Average daylight in August / Average sunshine in August - Glenwood, 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: 10h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in August
Glenwood, IL

Average sunshine days in August - Glenwood, IL
  • Average sunshine days in August: 13.3 days

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).

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Average UV index in August
Glenwood, IL

Average UV index in August - Glenwood, IL
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Glenwood, IL

Average cloud cover in August - Glenwood, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in August
Glenwood, IL

Average visibility in August - Glenwood, IL
  • Average visibility in August: 6mi

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

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Glenwood, Illinois, USA

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