January weather forecast
Island Lake, WI

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Weather in January

January, like December, is a freezing cold winter month in Island Lake, Wisconsin, with an average temperature varying between 18.7°F (-7.4°C) and 6.1°F (-14.4°C).

Temperature

January is the month that records the lowest temperatures, with averages ranging from a high of 18.7°F (-7.4°C) to a low of 6.1°F (-14.4°C).

Humidity

January and February, with an average relative humidity of 92%, are the most humid months.

Rainfall

The month with the least rainfall in Island Lake, Wisconsin, is January, when the rain falls for 3.7 days and typically collects 0.94" (24mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In January, it is snowing for 17.8 days. Throughout January, 5.43" (138mm) of snow is accumulated. Throughout the year, in Island Lake, there are 84 snowfall days, and 33.46" (850mm) of snow is accumulated.

Daylight

In Island Lake, Wisconsin, the average length of the day in January is 9h and 13min.
On the first day of the month, sunrise is at 7:44 am and sunset at 4:33 pm. On the last day of January, sunrise is at 7:27 am and sunset at 5:10 pm CST.

Sunshine

The months with the least sunshine in Island Lake are January and February, with an average of 2.8h of sunshine.

UV index

January, November 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 ordinary individuals.
Note: In January, a daily UV index of 1 turns into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Frequently asked questions

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

Island Lake, Wisconsin, reaches its average lowest temperatures in January, measuring 18.7°F (-7.4°C) at the peak and 6.1°F (-14.4°C) at the lowest.

How cold is it in Island Lake in January?

The high-temperature, in January, in Island Lake, is 18.7°F (-7.4°C), while the low-temperature averages to 6.1°F (-14.4°C).

What are the most humid months in Island Lake?

The months with the highest humidity are January and February, with an average relative humidity of 92%.

What is the average humidity in January in Island Lake?

In Island Lake, the average relative humidity in January is 92%.

What is the driest month in Island Lake?

The month with the least rainfall in Island Lake, Wisconsin, is January, when the rain falls for 3.7 days and typically collects 0.94" (24mm) of precipitation.

How much does it rain in Island Lake in January?

In Island Lake, during January, the rain falls for 3.7 days and regularly aggregates up to 0.94" (24mm) of precipitation.

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

In Island Lake, in January, during 17.8 snowfall days, 5.43" (138mm) of snow is typically accumulated.

What is the average length of the day in January in Island Lake?

The average day length in January in Island Lake is 9h and 13min.

When is the sunrise / sunset in January in Island Lake?

On the first day of January in Island Lake, sunrise is at 7:44 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:10 pm CST.

What are the months with the least sunshine in Island Lake?

January and February, with an average of 2.8h of sunshine, are months with the least sunshine in Island Lake.

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

In Island Lake, Wisconsin, the average sunshine duration in January is 2.8h.

What is the month with the lowest UV index in Island Lake?

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

What is the UV index reading in January in Island Lake?

The average daily maximum UV index in January in Island Lake is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
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
Island Lake, WI

Average temperature in January - Island Lake, WI
  • Average high temperature in January: 18.7°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (18.7°F).

  • Average low temperature in January: 6.1°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).

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Average pressure in January
Island Lake, WI

Average pressure in January - Island Lake, WI
  • Average pressure in January: 30.11"Hg

The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in January
Island Lake, WI

Average wind speed in January - Island Lake, WI
  • Average wind speed in January: 8.7mph

The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in January
Island Lake, WI

Average humidity in January - Island Lake, WI
  • Average humidity in January: 92%

The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in January
Island Lake, WI

Average rainfall in January - Island Lake, WI
  • Average rainfall in January: 0.94"

The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days in January
Island Lake, WI

Average rainfall days in January - Island Lake, WI
  • Average rainfall days in January: 3.7 days

The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (3.7 days).

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Average snowfall in January
Island Lake, WI

Average snowfall in January - Island Lake, WI
  • Average snowfall in January: 5.43"

The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Island Lake, WI

Average snowfall days in January - Island Lake, WI
  • Average snowfall days in January: 17.8 days

The month with the highest number of snowfall days is January (17.8 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
Island Lake, WI

Average daylight in January / Average sunshine in January - Island Lake, WI
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in January: 2h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 48min).

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Average sunshine days in January
Island Lake, WI

Average sunshine days in January - Island Lake, WI
  • Average sunshine days in January: 12.4 days

The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is June (9.3 days).

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Average UV index in January
Island Lake, WI

Average UV index in January - Island Lake, WI
  • Average UV index in January: 1

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, November and December (UV index 1).

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Average cloud cover in January
Island Lake, WI

Average cloud cover in January - Island Lake, WI
  • Average cloud cover in January: 72

The months with the most cloud cover are January and February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 36).

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Average visibility in January
Island Lake, WI

Average visibility in January - Island Lake, WI
  • Average visibility in January: 4mi

The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

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Island Lake, Wisconsin, USA

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