January weather forecast
Lake Zurich, IL

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Weather in January

January, the same as December, in Lake Zurich, Illinois, is a freezing cold winter month, with an average temperature ranging between max 27.7°F (-2.4°C) and min 16.3°F (-8.7°C).

Temperature

January stands out as Lake Zurich's coldest month, with an average high-temperature of 27.7°F (-2.4°C) and a low-temperature of 16.3°F (-8.7°C).

Humidity

January and February, with an average relative humidity of 83%, are the most humid months in Lake Zurich.

Rainfall

In Lake Zurich, during January, the rain falls for 6.7 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, in Lake Zurich, there are 163.1 rainfall days, and 32.24" (819mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Lake Zurich, in January, snow falls for 15.5 days, with typically accumulated 6.14" (156mm) of snow. Throughout the year, there are 55.5 snowfall days, and 22.95" (583mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 31min.
On the first day of January, sunrise is at 7:20 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:04 pm CST.

Sunshine

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

UV index

The months with the lowest UV index in Lake Zurich are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 1 during January translates into the following directions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

What time of the year is the coldest in Lake Zurich?

January proves to be the coldest month in Lake Zurich, Illinois, recording an average maximum temperature of 27.7°F (-2.4°C) and a minimum temperature of 16.3°F (-8.7°C).

How cold is January in Lake Zurich?

During January, Lake Zurich experiences an average high-temperature of 27.7°F (-2.4°C) and a low-temperature of 16.3°F (-8.7°C).

What are the most humid months in Lake Zurich?

January and February, with an average relative humidity of 83%, are most humid months in Lake Zurich.

What is the average humidity in January in Lake Zurich?

The average relative humidity in January in Lake Zurich is 83%.

How much does it rain in Lake Zurich in January?

In Lake Zurich, Illinois, during January, the rain falls for 6.7 days and regularly aggregates up to 1.77" (45mm) of precipitation.

How many days does it snow in January in Lake Zurich?

In Lake Zurich, Illinois, during January, snow falls for 15.5 days and regularly aggregates up to 6.14" (156mm) of snow.

How many hours of daylight does Lake Zurich have in January?

In Lake Zurich, the average day length in January is 9h and 31min.

When are sunrise and sunset in January in Lake Zurich?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 4:30 pm. On the last day of the month, in Lake Zurich, sunrise is at 7:06 am and sunset at 5:04 pm CST.

What is the month with the least sunshine in Lake Zurich?

The month with the least sunshine in Lake Zurich is January, with an average of 3.7h of sunshine.

How long on average sun shines in January in Lake Zurich?

In January, the average sunshine duration in Lake Zurich is 3.7h.

What are the months with the lowest UV index in Lake Zurich?

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

How high is the UV index in January in Lake Zurich?

In January, the average daily maximum UV index in Lake Zurich, Illinois, is 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's 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
Lake Zurich, IL

Average temperature in January - Lake Zurich, IL
  • Average high temperature in January: 27.7°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in January: 16.3°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).

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Average pressure in January
Lake Zurich, IL

Average pressure in January - Lake Zurich, IL
  • Average pressure in January: 30.11"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 January
Lake Zurich, IL

Average wind speed in January - Lake Zurich, IL
  • Average wind speed in January: 10.1mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in January
Lake Zurich, IL

Average humidity in January - Lake Zurich, IL
  • Average humidity in January: 83%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in January
Lake Zurich, IL

Average rainfall in January - Lake Zurich, IL
  • Average rainfall in January: 1.77"

The wettest month (with the highest rainfall) is June (4.13").
The driest month (with the least rainfall) is November (1.61").

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Average rainfall days in January
Lake Zurich, IL

Average rainfall days in January - Lake Zurich, IL
  • Average rainfall days in January: 6.7 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in January
Lake Zurich, IL

Average snowfall in January - Lake Zurich, IL
  • Average snowfall in January: 6.14"

The month with the highest snowfall is February (6.22").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Lake Zurich, IL

Average snowfall days in January - Lake Zurich, IL
  • Average snowfall days in January: 15.5 days

The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Lake Zurich, IL

Average daylight in January / Average sunshine in January - Lake Zurich, 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 12min).

  • Average sunshine in January: 3h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in January
Lake Zurich, IL

Average sunshine days in January - Lake Zurich, IL
  • Average sunshine days in January: 12.2 days

The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (8.4 days).

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Average UV index in January
Lake Zurich, IL

Average UV index in January - Lake Zurich, 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).

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Average cloud cover in January
Lake Zurich, IL

Average cloud cover in January - Lake Zurich, IL
  • Average cloud cover in January: 61

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 31).

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Average visibility in January
Lake Zurich, IL

Average visibility in January - Lake Zurich, IL
  • Average visibility in January: 5mi

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

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Lake Zurich, Illinois, USA

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