January weather forecast
Mount Carroll, IL

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Weather in January

January, the same as December, in Mount Carroll, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 26.1°F (-3.3°C) and 13.5°F (-10.3°C).

Temperature

In Mount Carroll, January records the lowest average temperatures, peaking at 26.1°F (-3.3°C) and reaching a low of 13.5°F (-10.3°C).

Humidity

January is the most humid month in Mount Carroll, with an average relative humidity of 86%.

Rainfall

The months with the least rainfall are January and February Rain falls for 4.1 days and accumulates 0.67" (17mm) of rain.

Snowfall

January through April, October through December are months with snowfall. January is the month with the most snowfall in Mount Carroll. Snow falls for 10.6 days and accumulates 2.48" (63mm) of snow.

Daylight

The average length of the day in January is 9h and 32min.
On the first day of the month, sunrise is at 7:28 am and sunset at 4:38 pm. On the last day of January, sunrise is at 7:13 am and sunset at 5:12 pm CST.

Sunshine

January and February, with an average of 3.7h of sunshine, are months with the least 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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the average maximum UV index of 1 translates into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

What is the coldest time of year in Mount Carroll?

January tends to be the coldest month in Mount Carroll, with temperatures averaging a daily high of 26.1°F (-3.3°C) and a low of 13.5°F (-10.3°C).

How cold is January in Mount Carroll?

During January, Mount Carroll experiences an average high-temperature of 26.1°F (-3.3°C) and a low-temperature of 13.5°F (-10.3°C).

What is the most humid month in Mount Carroll?

January is the most humid month in Mount Carroll, with an average relative humidity of 86%.

What is the average humidity in January in Mount Carroll?

In January, the average relative humidity in Mount Carroll, Illinois, is 86%.

What is the driest month in Mount Carroll?

The months with the least rainfall in Mount Carroll, Illinois, are January and February Rain falls for 4.1 days and accumulates 0.67" (17mm) of rain.

How much does it rain in Mount Carroll in January?

In Mount Carroll, in January, during 4.1 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

When does it snow the most in Mount Carroll?

The month with the most snowfall in Mount Carroll is January, when snow falls for 10.6 days and typically aggregates up to 2.48" (63mm) of snow.

How many days does it snow in January in Mount Carroll?

In January, in Mount Carroll, it is snowing for 10.6 days. Throughout January, 2.48" (63mm) of snow is accumulated.

How many hours of daylight does Mount Carroll have in January?

In Mount Carroll, Illinois, the average day length in January is 9h and 32min.

When is the sunrise / sunset in January in Mount Carroll?

On the first day of January, sunrise is at 7:28 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:12 pm CST.

What is the month with the least sunshine in Mount Carroll?

January and February, with an average of 3.7h of sunshine, are months with the least sunshine in Mount Carroll, Illinois.

How many hours of sunshine does Mount Carroll have in January?

In Mount Carroll, the average sunshine duration in January is 3.7h.

What are the months with the lowest UV index in Mount Carroll?

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

What is the UV index reading in January in Mount Carroll?

In January, the average daily maximum UV index in Mount Carroll is 1. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
32.5°F 0.3°C
26.1°F -3.3°C
30.2°F -1°C
Average low temperature
22.5°F -5.3°C
13.5°F -10.3°C
16.7°F -8.5°C
Average pressure
30.1" 765mmHg
30.12" 765mmHg
30.11" 765mmHg
Average wind speed
9.4mph 15.1km/h
9.8mph 15.8km/h
9.9mph 15.9km/h
Average max. wind speed
10mph 16.1km/h
10.4mph 16.7km/h
10.6mph 17.1km/h
Average wind speed gusts
15mph 24.1km/h
15.9mph 25.6km/h
16mph 25.7km/h
Average humidity
82%
86%
85%
Average rainfall
0.79" 20mm
0.67" 17mm
0.67" 17mm
Average rainfall days
5.9
4.1
3.9
Average snowfall
1.38" 35mm
2.48" 63mm
2.13" 54mm
Average snowfall days
8.4
10.6
9.1
Average daylight
9h 1min
9h 3min
10h 4min
Average sunshine
4h 0min
3h 4min
3h 4min
Average sunshine days
18.6
18
16.8
Average UV index
1
1
2
Average cloud cover
58%
62%
59%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in January
Mount Carroll, IL

Average temperature in January - Mount Carroll, IL
  • Average high temperature in January: 26.1°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in January: 13.5°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

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Average pressure in January
Mount Carroll, IL

Average pressure in January - Mount Carroll, 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).

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Average wind speed in January
Mount Carroll, IL

Average wind speed in January - Mount Carroll, IL
  • Average wind speed in January: 9.8mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in January
Mount Carroll, IL

Average humidity in January - Mount Carroll, IL
  • Average humidity in January: 86%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in January
Mount Carroll, IL

Average rainfall in January - Mount Carroll, IL
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is May (2.52").
The driest months (with the least rainfall) are January and February (0.67").

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Average rainfall days in January
Mount Carroll, IL

Average rainfall days in January - Mount Carroll, IL
  • Average rainfall days in January: 4.1 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is February (3.9 days).

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Average snowfall in January
Mount Carroll, IL

Average snowfall in January - Mount Carroll, IL
  • Average snowfall in January: 2.48"

The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Mount Carroll, IL

Average snowfall days in January - Mount Carroll, IL
  • Average snowfall days in January: 10.6 days

The month with the highest number of snowfall days is January (10.6 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
Mount Carroll, IL

Average daylight in January / Average sunshine in January - Mount Carroll, 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 month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).

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Average sunshine days in January
Mount Carroll, IL

Average sunshine days in January - Mount Carroll, IL
  • Average sunshine days in January: 18 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index in January
Mount Carroll, IL

Average UV index in January - Mount Carroll, IL
  • Average UV index in January: 1

The month with the highest UV index is 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
Mount Carroll, IL

Average cloud cover in January - Mount Carroll, 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 September (Cloud cover 32).

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Average visibility in January
Mount Carroll, IL

Average visibility in January - Mount Carroll, IL
  • Average visibility in January: 5mi

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

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Mount Carroll, Illinois, USA

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