August weather forecast
Spring Grove, IL

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Weather in August

The last month of the summer, August, is another warm month in Spring Grove, Illinois, with an average temperature ranging between max 77.5°F (25.3°C) and min 61.5°F (16.4°C).

Temperature

As Spring Grove transitions from July to August, the average high-temperatures adjust to a still warm 77.5°F (25.3°C), nearly the same as the previous 79°F (26.1°C). The mean low-temperature during August nights is an enjoyable 61.5°F (16.4°C).

Humidity

In Spring Grove, the average relative humidity in August is 82%.

Rainfall

In Spring Grove, in August, during 16.3 rainfall days, 2.99" (76mm) of precipitation is typically accumulated. In Spring Grove, during the entire year, the rain falls for 139.6 days and collects up to 26.18" (665mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in August is 13h and 51min.
On the first day of the month, sunrise is at 5:46 am and sunset at 8:12 pm. On the last day of August, sunrise is at 6:17 am and sunset at 7:28 pm CDT.

Sunshine

July and August, with an average of 9.9h of sunshine, are months with the most sunshine.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 5 during August, leads to the following recommendations:
Take precautions - Protection against sun damage is advised. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What is the temperature in August in Spring Grove?

August temperatures in Spring Grove vary between a high-temperature of 77.5°F (25.3°C) and a low-temperature of 61.5°F (16.4°C).

What is the average humidity in August in Spring Grove?

In Spring Grove, the average relative humidity in August is 82%.

How many days does it rain in August in Spring Grove?

In August, in Spring Grove, the rain falls for 16.3 days. Throughout August, 2.99" (76mm) of precipitation is accumulated.

When it does not snow in Spring Grove?

June through September are months without snowfall in Spring Grove.

How many hours of daylight does Spring Grove have in August?

The average day length in August in Spring Grove, Illinois, is 13h and 51min.

When is the sunrise / sunset in August in Spring Grove?

On the first day of August, sunrise is at 5:46 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:28 pm CDT.

What are the months with the most sunshine in Spring Grove?

The months with the most sunshine in Spring Grove are July and August, with an average of 9.9h of sunshine.

How many hours of sunshine does Spring Grove have in August?

The average sunshine duration in August in Spring Grove is 9.9h.

When is the highest UV index in Spring Grove?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Spring Grove.

How high is the UV index in August in Spring Grove?

In August, the average daily maximum UV index in Spring Grove, Illinois, is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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
Spring Grove, IL

Average temperature in August - Spring Grove, IL
  • Average high temperature in August: 77.5°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in August: 61.5°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 (14.9°F).

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Average pressure in August
Spring Grove, IL

Average pressure in August - Spring Grove, IL
  • Average pressure in August: 29.97"Hg

The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Spring Grove, IL

Average wind speed in August - Spring Grove, IL
  • Average wind speed in August: 6.4mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in August
Spring Grove, IL

Average humidity in August - Spring Grove, IL
  • Average humidity in August: 82%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in August
Spring Grove, IL

Average rainfall in August - Spring Grove, IL
  • Average rainfall in August: 2.99"

The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is December (1.06").

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Average rainfall days in August
Spring Grove, IL

Average rainfall days in August - Spring Grove, IL
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (3.4 days).

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Average snowfall in August
Spring Grove, IL

Average snowfall in August - Spring Grove, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.33").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Spring Grove, IL

Average snowfall days in August - Spring Grove, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (10.1 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
Spring Grove, IL

Average daylight in August / Average sunshine in August - Spring Grove, 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 6min).

  • Average sunshine in August: 9h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 36min).

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Average sunshine days in August
Spring Grove, IL

Average sunshine days in August - Spring Grove, IL
  • Average sunshine days in August: 12.2 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.9 days).

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Average UV index in August
Spring Grove, IL

Average UV index in August - Spring Grove, IL
  • Average UV index in August: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in August
Spring Grove, IL

Average cloud cover in August - Spring Grove, IL
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July, August and September (Cloud cover 32).

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Average visibility in August
Spring Grove, IL

Average visibility in August - Spring Grove, IL
  • Average visibility in August: 6mi

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

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Spring Grove, Illinois, USA

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