August weather forecast
Grand Ridge, IL

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Weather in August

August, the last month of the summer in Grand Ridge, is another warm month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 79.7°F (26.5°C).

Temperature

Grand Ridge's average high-temperature in August is a still warm 79.7°F (26.5°C), marking an insignificant difference from the 81°F (27.2°C) of July. Grand Ridge, during the nights of August, experiences an average temperature drop to a comfortable 62.2°F (16.8°C).

Humidity

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

Rainfall

In August, the rain falls for 16.4 days. Throughout August, 2.28" (58mm) of precipitation is accumulated. In Grand Ridge, Illinois, during the entire year, the rain falls for 145 days and collects up to 25.08" (637mm) of precipitation.

Snowfall

May through September are months without snowfall in Grand Ridge.

Daylight

In Grand Ridge, the average length of the day in August is 13h and 46min.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:21 am and sunset at 7:29 pm CDT.

Sunshine

The average sunshine in August in Grand Ridge, Illinois, is 9.8h.

UV index

In August, the average daily maximum UV index in Grand Ridge is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 5 in August suggests the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

What are the temperatures in Grand Ridge in August?

The high-temperature, in August, in Grand Ridge, records 79.7°F (26.5°C), while the low-temperature is 62.2°F (16.8°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in August in Grand Ridge?

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

How many days does it rain in August in Grand Ridge?

In August, the rain falls for 16.4 days. Throughout August, 2.28" (58mm) of precipitation is accumulated.

When it does not snow in Grand Ridge?

In Grand Ridge, snow does not fall in May through September.

What is the average length of the day in August in Grand Ridge?

In Grand Ridge, the average day length in August is 13h and 46min.

When is the sunrise / sunset in August in Grand Ridge?

On the first day of August in Grand Ridge, sunrise is at 5:51 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 7:29 pm CDT.

How long on average sun shines in August in Grand Ridge?

In August, the average sunshine duration in Grand Ridge is 9.8h.

What is the UV index reading in August in Grand Ridge?

In Grand Ridge, Illinois, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Grand Ridge, IL

Average temperature in August - Grand Ridge, IL
  • Average high temperature in August: 79.7°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).

  • Average low temperature in August: 62.2°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 (17.8°F).

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Average pressure in August
Grand Ridge, IL

Average pressure in August - Grand Ridge, 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 (29.92"Hg).

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Average wind speed in August
Grand Ridge, IL

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

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in August
Grand Ridge, IL

Average humidity in August - Grand Ridge, 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 (72%).

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Average rainfall in August
Grand Ridge, IL

Average rainfall in August - Grand Ridge, IL
  • Average rainfall in August: 2.28"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (1.18").

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Average rainfall days in August
Grand Ridge, IL

Average rainfall days in August - Grand Ridge, IL
  • Average rainfall days in August: 16.4 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (5.3 days).

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Average snowfall in August
Grand Ridge, IL

Average snowfall in August - Grand Ridge, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Grand Ridge, IL

Average snowfall days in August - Grand Ridge, 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 May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Grand Ridge, IL

Average daylight in August / Average sunshine in August - Grand Ridge, 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 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
Grand Ridge, IL

Average sunshine days in August - Grand Ridge, IL
  • Average sunshine days in August: 11.1 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (9.2 days).

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Average UV index in August
Grand Ridge, IL

Average UV index in August - Grand Ridge, 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).

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Average cloud cover in August
Grand Ridge, IL

Average cloud cover in August - Grand Ridge, IL
  • Average cloud cover in August: 32

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 32).

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Average visibility in August
Grand Ridge, IL

Average visibility in August - Grand Ridge, 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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Grand Ridge, Illinois, USA

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