January weather forecast
Mokena, IL

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Weather in January

January, like December, is another subzero cold winter month in Mokena, Illinois, with temperature in the range of an average high of 29.3°F (-1.5°C) and an average low of 17.4°F (-8.1°C).

Temperature

The coldest month is January, with an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 17.4°F (-8.1°C).

Humidity

In Mokena, the average relative humidity in January is 82%.

Rainfall

In January, in Mokena, the rain falls for 5.9 days. Throughout January, 1.77" (45mm) of precipitation is accumulated. Throughout the year, there are 149.8 rainfall days, and 31.26" (794mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Mokena. The month with the most snowfall in Mokena, Illinois, is January, when snow falls for 12.3 days and typically aggregates up to 4.53" (115mm) of snow.

Daylight

The average length of the day in January is 9h and 35min.
On the first day of the month, sunrise is at 7:17 am and sunset at 4:32 pm. On the last day of January, sunrise is at 7:04 am and sunset at 5:05 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 3.6h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 1 during January translates into the following directions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

What time of the year is the coldest in Mokena?

In Mokena, Illinois, the lowest temperatures are generally noted in January, averaging a high of 29.3°F (-1.5°C) and a low of 17.4°F (-8.1°C).

How cold is it in Mokena in January?

An average high-temperature, in January, in Mokena, is 29.3°F (-1.5°C) and the average low-temperature is 17.4°F (-8.1°C).

What is the average humidity in January in Mokena?

In January, the average relative humidity is 82%.

How much does it rain in Mokena in January?

In Mokena, Illinois, during January, the rain falls for 5.9 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When does it snow the most in Mokena?

The month with the most snowfall in Mokena is January, when snow falls for 12.3 days and typically aggregates up to 4.53" (115mm) of snow.

How much does it snow in Mokena in January?

In Mokena, during January, snow falls for 12.3 days and regularly aggregates up to 4.53" (115mm) of snow.

What is the average length of the day in January in Mokena?

In January, the average day length in Mokena, Illinois, is 9h and 35min.

When is the sunrise / sunset in January in Mokena?

On the first day of January in Mokena, Illinois, sunrise is at 7:17 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:05 pm CST.

What is the month with the least sunshine in Mokena?

With an average of 3.6h of sunshine, January has the least sunshine of the year.

How long on average sun shines in January in Mokena?

In Mokena, the average sunshine duration in January is 3.6h.

What are the months with the lowest UV index in Mokena?

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

How high is the UV index in January in Mokena?

The average daily maximum UV index in January in Mokena is 1. A UV Index value of 2, and less, symbolizes a low health risk from 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
Mokena, IL

Average temperature in January - Mokena, IL
  • Average high temperature in January: 29.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in January: 17.4°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 (17.4°F).

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Average pressure in January
Mokena, IL

Average pressure in January - Mokena, 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
Mokena, IL

Average wind speed in January - Mokena, IL
  • Average wind speed in January: 9.7mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in January
Mokena, IL

Average humidity in January - Mokena, IL
  • Average humidity in January: 82%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in January
Mokena, IL

Average rainfall in January - Mokena, IL
  • Average rainfall in January: 1.77"

The wettest month (with the highest rainfall) is May (4.21").
The driest months (with the least rainfall) are February and December (1.61").

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Average rainfall days in January
Mokena, IL

Average rainfall days in January - Mokena, IL
  • Average rainfall days in January: 5.9 days

The months with the highest number of rainy days are June and July (17.3 days).
The month with the least rainy days is February (5.3 days).

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Average snowfall in January
Mokena, IL

Average snowfall in January - Mokena, IL
  • Average snowfall in January: 4.53"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Mokena, IL

Average snowfall days in January - Mokena, IL
  • Average snowfall days in January: 12.3 days

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Mokena, IL
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 3h and 4min

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in January
Mokena, IL

Average sunshine days in January - Mokena, IL
  • Average sunshine days in January: 14.1 days

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is April (10.7 days).

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Average UV index in January
Mokena, IL

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

The months with the highest UV index are June and July (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
Mokena, IL

Average cloud cover in January - Mokena, IL
  • Average cloud cover in January: 62

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in January
Mokena, IL

Average visibility in January - Mokena, IL
  • Average visibility in January: 5mi

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

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Mokena, Illinois, USA

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