January weather forecast
Warren, IL

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Weather in January

January, like December, is another subzero cold winter month in Warren, Illinois, with temperature in the range of an average low of 12°F (-11.1°C) and an average high of 24.8°F (-4°C).

Temperature

Warren's January weather reaches an average high of 24.8°F (-4°C) and an average low of 12°F (-11.1°C), making it the coldest month.

Humidity

With an average relative humidity of 88%, January is the most humid month.

Rainfall

January is the month with the least rainfall. Rain falls for 4.6 days and accumulates 1.06" (27mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 12.8 days and typically aggregates up to 3.82" (97mm) of snow.

Daylight

In Warren, the average length of the day in January is 9h and 29min.
On the first day of January, sunrise is at 7:29 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:11 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 3.4h 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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 1 in January converts into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Around midday, solar radiation is most harmful; hence, exposure should be limited. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

Warren's coldest month, January, registers temperatures that range from a high of 24.8°F (-4°C) to a low of 12°F (-11.1°C).

How cold is it in January?

Warren in January has an average high-temperature of 24.8°F (-4°C) and an average low-temperature of 12°F (-11.1°C).

What is the most humid month?

The most humid month is January, with an average relative humidity of 88%.

What is the average humidity in January?

The average relative humidity in January is 88%.

What is the driest month?

January is the month with the least rainfall. Rain falls for 4.6 days and accumulates 1.06" (27mm) of precipitation.

How much does it rain in January?

In Warren, in January, during 4.6 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

When does it snow the most?

The month with the most snowfall is January, when snow falls for 12.8 days and typically aggregates up to 3.82" (97mm) of snow.

How much does it snow in January?

In Warren, in January, snow falls for 12.8 days, with typically accumulated 3.82" (97mm) of snow.

How many hours of daylight does Warren have in January?

In January, the average day length is 9h and 29min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:29 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:11 pm CST.

What is the month with the least sunshine?

With an average of 3.4h of sunshine, January has the least sunshine of the year.

How long on average sun shines in January?

In January, the average sunshine duration in Warren, Illinois, is 3.4h.

When is the lowest UV index?

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

What is the UV index reading in January?

In January, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Warren, IL

Average temperature in January - Warren, IL
  • Average high temperature in January: 24.8°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.8°F).

  • Average low temperature in January: 12°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (12°F).

Average pressure in January
Warren, IL

Average pressure in January - Warren, IL
  • Average pressure in January: 30.12"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in January
Warren, IL

Average wind speed in January - Warren, IL
  • Average wind speed in January: 10mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in January
Warren, IL

Average humidity in January - Warren, IL
  • Average humidity in January: 88%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April, October and November (77%).

Average rainfall in January
Warren, IL

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

The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is January (1.06").

Average rainfall days in January
Warren, IL

Average rainfall days in January - Warren, IL
  • Average rainfall days in January: 4.6 days

The months with the highest number of rainy days are May and June (17.8 days).
The month with the least rainy days is February (4.5 days).

Average snowfall in January
Warren, IL

Average snowfall in January - Warren, IL
  • Average snowfall in January: 3.82"

The month with the highest snowfall is January (3.82").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Warren, IL

Average snowfall days in January - Warren, IL
  • Average snowfall days in January: 12.8 days

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Warren, 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 2min

The months with the most sunshine are July and August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in January
Warren, IL

Average sunshine days in January - Warren, IL
  • Average sunshine days in January: 14.5 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in January
Warren, IL

Average UV index in January - Warren, IL
  • 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 and December (UV index 1).

Average cloud cover in January
Warren, IL

Average cloud cover in January - Warren, IL
  • Average cloud cover in January: 65

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is September (Cloud cover 34).

Average visibility in January
Warren, IL

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

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

Warren, Illinois, USA

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