August weather forecast
Gurnee, IL

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Weather in August

August, the last month of the summer in Gurnee, is also a moderately hot month, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 77°F (25°C).

Temperature

Gurnee transitions into August recording an average high-temperature of a still moderately hot 77°F (25°C), closely aligning with the preceding month's temperature. An average low-temperature of 64.8°F (18.2°C) is common in Gurnee, Illinois, during the nights of August.

Humidity

In Gurnee, the average relative humidity in August is 79%.

Rainfall

The months with the most rainfall are June and August, with an average 2.68" (68mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In August, the average length of the day in Gurnee is 13h and 51min.
On the first day of the month, sunrise is at 5:44 am and sunset at 8:10 pm. On the last day of August, in Gurnee, sunrise is at 6:16 am and sunset at 7:26 pm CDT.

Sunshine

The months with the most sunshine are July and August, with an average of 10.5h of sunshine.

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index in Gurnee. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What is the average August temperature in Gurnee?

In Gurnee, in August, the average high-temperature is 77°F (25°C), and the average low-temperature is 64.8°F (18.2°C).

What is the average humidity in August in Gurnee?

The average relative humidity in August in Gurnee, Illinois, is 79%.

What is the rainiest month in Gurnee?

The wettest months are June and August, with an average 2.68" (68mm) of rainfall.

How many days does it rain in August in Gurnee?

In Gurnee, Illinois, in August, during 15.7 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When it does not snow in Gurnee?

In Gurnee, Illinois, snow does not fall in May through September.

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

In August, the average day length in Gurnee, Illinois, is 13h and 51min.

When are sunrise and sunset in August in Gurnee?

In August, on the first day of the month, sunrise is at 5:44 am and sunset at 8:10 pm. On the last day of the month, in Gurnee, sunrise is at 6:16 am and sunset at 7:26 pm CDT.

What are the months with the most sunshine in Gurnee?

July and August, with an average of 10.5h of sunshine, are months with the most sunshine in Gurnee, Illinois.

How many hours of sunshine does Gurnee have in August?

The average sunshine duration in August is 10.5h.

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

The months with the highest UV index in Gurnee are July and August, with an average maximum UV index of 6.

What is the UV index intensity in August in Gurnee?

The average daily maximum UV index in August in Gurnee, Illinois, 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
Gurnee, IL

Average temperature in August - Gurnee, IL
  • Average high temperature in August: 77°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in August: 64.8°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in August
Gurnee, IL

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

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

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Average wind speed in August
Gurnee, IL

Average wind speed in August - Gurnee, IL
  • Average wind speed in August: 7.3mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

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Average humidity in August
Gurnee, IL

Average humidity in August - Gurnee, IL
  • Average humidity in August: 79%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).

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Average rainfall in August
Gurnee, IL

Average rainfall in August - Gurnee, IL
  • Average rainfall in August: 2.68"

The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").

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Average rainfall days in August
Gurnee, IL

Average rainfall days in August - Gurnee, IL
  • Average rainfall days in August: 15.7 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).

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Average snowfall in August
Gurnee, IL

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

The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Gurnee, IL

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

The month with the highest number of snowfall days is January (12.4 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
Gurnee, IL

Average daylight in August / Average sunshine in August - Gurnee, 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: 10h and 3min

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in August
Gurnee, IL

Average sunshine days in August - Gurnee, IL
  • Average sunshine days in August: 11.6 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).

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Average UV index in August
Gurnee, IL

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

The months with the highest UV index are July 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
Gurnee, IL

Average cloud cover in August - Gurnee, IL
  • Average cloud cover in August: 27

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in August
Gurnee, IL

Average visibility in August - Gurnee, 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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Gurnee, Illinois, USA

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