January weather forecast
Gurnee, IL

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Weather in January

January, the same as December, in Gurnee, Illinois, is another subzero cold winter month, with an average temperature ranging between min 18.3°F (-7.6°C) and max 27.9°F (-2.3°C).

Temperature

January is Gurnee's coldest month, registering average high temperatures of 27.9°F (-2.3°C) and lows of 18.3°F (-7.6°C).

Humidity

The most humid month is January, with an average relative humidity of 83%.

Rainfall

In Gurnee, in January, during 6.4 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. Throughout the year, there are 142.5 rainfall days, and 21.5" (546mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Gurnee, Illinois, are January through April, October through December. In January, it is snowing for 12.4 days. Throughout January, 2.24" (57mm) of snow is accumulated. Throughout the year, there are 45.5 snowfall days, and 9.37" (238mm) of snow is accumulated.

Daylight

In Gurnee, the average length of the day in January is 9h and 30min.
On the first day of the month, sunrise is at 7:20 am and sunset at 4:29 pm. On the last day of January, sunrise is at 7:06 am and sunset at 5:03 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 3.7h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

Gurnee, Illinois, witnesses the coldest weather in January, with temperatures averaging a high of 27.9°F (-2.3°C) and a low of 18.3°F (-7.6°C).

How cold is it in January?

The average high-temperature and low-temperature during January are 27.9°F (-2.3°C) and 18.3°F (-7.6°C) respectively.

What is the most humid month?

The most humid month is January, with an average relative humidity of 83%.

What is the average humidity in January?

In January, the average relative humidity is 83%.

How many days does it rain in January in Gurnee?

In Gurnee, in January, during 6.4 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

How many days does it snow in January?

In Gurnee, in January, snow falls for 12.4 days, with typically accumulated 2.24" (57mm) of snow.

What is the average length of the day in January?

In Gurnee, the average day length in January is 9h and 30min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:03 pm CST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.7h of sunshine.

How many hours of sunshine does Gurnee have in January?

In January, the average sunshine duration is 3.7h.

What are the months with the lowest UV index?

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

What is the UV index intensity in January?

In Gurnee, the average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Gurnee, IL

Average temperature in January - Gurnee, IL
  • Average high temperature in January: 27.9°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 January: 18.3°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).

Average pressure in January
Gurnee, IL

Average pressure in January - Gurnee, IL
  • Average pressure in January: 30.1"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).

Average wind speed in January
Gurnee, IL

Average wind speed in January - Gurnee, IL
  • Average wind speed in January: 11.9mph

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).

Average humidity in January
Gurnee, IL

Average humidity in January - Gurnee, IL
  • Average humidity in January: 83%

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

Average rainfall in January
Gurnee, IL

Average rainfall in January - Gurnee, IL
  • Average rainfall in January: 1.06"

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

Average rainfall days in January
Gurnee, IL

Average rainfall days in January - Gurnee, IL
  • Average rainfall days in January: 6.4 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).

Average snowfall in January
Gurnee, IL

Average snowfall in January - Gurnee, IL
  • Average snowfall in January: 2.24"

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

Average snowfall days in January
Gurnee, IL

Average snowfall days in January - Gurnee, IL
  • Average snowfall days in January: 12.4 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).

Average daylight in January /
Average sunshine in January
Gurnee, IL

Average daylight in January / Average sunshine in January - Gurnee, IL
  • Average daylight in January: 9h and 3min

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 January: 3h and 4min

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).

Average sunshine days in January
Gurnee, IL

Average sunshine days in January - Gurnee, IL
  • Average sunshine days in January: 12.4 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).

Average UV index in January
Gurnee, IL

Average UV index in January - Gurnee, IL
  • Average UV index in January: 1

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).

Average cloud cover in January
Gurnee, IL

Average cloud cover in January - Gurnee, IL
  • Average cloud cover in January: 61

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

Average visibility in January
Gurnee, IL

Average visibility in January - Gurnee, IL
  • Average visibility in January: 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).

Gurnee, Illinois, USA

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