January weather forecast
Marengo, IL

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Weather in January

January, like December, is another subzero cold winter month in Marengo, Illinois, with an average temperature ranging between min 13.8°F (-10.1°C) and max 26.1°F (-3.3°C).

Temperature

The coldest month is January, with an average high-temperature of 26.1°F (-3.3°C) and an average low-temperature of 13.8°F (-10.1°C).

Humidity

With an average relative humidity of 86%, January is the most humid month in Marengo.

Rainfall

In Marengo, during January, the rain falls for 5.6 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Marengo, during the entire year, the rain falls for 154.6 days and collects up to 30.31" (770mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Marengo. January is the month with the most snowfall in Marengo. Snow falls for 12.3 days and accumulates 5.28" (134mm) of snow.

Daylight

The average length of the day in January in Marengo is 9h and 31min.
On the first day of January in Marengo, sunrise is at 7:23 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:06 pm CST.

Sunshine

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

UV index

The months with the lowest UV index 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 the average person.
Note: The daily maximum UV index of 1 in January interprets into the following advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What time of the year is the coldest in Marengo?

During the coldest month in Marengo, January, temperatures average a high of 26.1°F (-3.3°C) and a low of 13.8°F (-10.1°C).

How cold is January in Marengo?

In January, in Marengo, the average high-temperature is 26.1°F (-3.3°C), and the average low-temperature is 13.8°F (-10.1°C).

What is the most humid month in Marengo?

The most humid month in Marengo, Illinois, is January, with an average relative humidity of 86%.

What is the average humidity in January in Marengo?

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

How many days does it rain in January in Marengo?

In January, in Marengo, the rain falls for 5.6 days. Throughout January, 1.61" (41mm) of precipitation is accumulated.

What is the snowiest month in Marengo?

January is the month with the most snowfall in Marengo, Illinois. Snow falls for 12.3 days and accumulates 5.28" (134mm) of snow.

How much does it snow in Marengo in January?

In Marengo, Illinois, in January, snow falls for 12.3 days, with typically accumulated 5.28" (134mm) of snow.

How many hours of daylight does Marengo have in January?

In January, the average day length in Marengo, Illinois, is 9h and 31min.

What time are sunrise and sunset in January in Marengo?

In January, on the first day of the month, sunrise is at 7:23 am and sunset at 4:32 pm. On the last day of the month, in Marengo, sunrise is at 7:08 am and sunset at 5:06 pm CST.

What is the month with the least sunshine in Marengo?

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

How many hours of sunshine does Marengo have in January?

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

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

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

What is the UV index reading in January in Marengo?

In January, the average daily maximum UV index in Marengo is 1. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
32.5°F 0.3°C
26.1°F -3.3°C
30°F -1.1°C
Average low temperature
22.3°F -5.4°C
13.8°F -10.1°C
17.1°F -8.3°C
Average pressure
30.09" 764mmHg
30.11" 765mmHg
30.1" 765mmHg
Average wind speed
9.1mph 14.6km/h
9.7mph 15.6km/h
9.8mph 15.8km/h
Average max. wind speed
9.8mph 15.8km/h
10.4mph 16.7km/h
10.4mph 16.7km/h
Average wind speed gusts
14.4mph 23.2km/h
15.4mph 24.8km/h
15.5mph 24.9km/h
Average humidity
83%
86%
85%
Average rainfall
1.57" 40mm
1.61" 41mm
1.5" 38mm
Average rainfall days
8
5.6
4.8
Average snowfall
2.8" 71mm
5.28" 134mm
3.86" 98mm
Average snowfall days
10.2
12.3
10.4
Average daylight
9h 1min
9h 3min
10h 4min
Average sunshine
3h 5min
3h 4min
3h 4min
Average sunshine days
16.5
14.8
14.1
Average UV index
1
1
2
Average cloud cover
60%
63%
60%
Average visibility
6mi 9.7km
5mi 8km
5mi 8km

Average temperature in January
Marengo, IL

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

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in January: 13.8°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 (13.8°F).

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Average pressure in January
Marengo, IL

Average pressure in January - Marengo, 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
Marengo, IL

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

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in January
Marengo, IL

Average humidity in January - Marengo, 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 (76%).

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Average rainfall in January
Marengo, IL

Average rainfall in January - Marengo, IL
  • Average rainfall in January: 1.61"

The wettest month (with the highest rainfall) is June (4.21").
The driest months (with the least rainfall) are February and November (1.5").

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Average rainfall days in January
Marengo, IL

Average rainfall days in January - Marengo, IL
  • Average rainfall days in January: 5.6 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (4.8 days).

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Average snowfall in January
Marengo, IL

Average snowfall in January - Marengo, IL
  • Average snowfall in January: 5.28"

The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Marengo, IL

Average snowfall days in January - Marengo, 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
Marengo, IL

Average daylight in January / Average sunshine in January - Marengo, 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 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in January
Marengo, IL

Average sunshine days in January - Marengo, IL
  • Average sunshine days in January: 14.8 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.5 days).

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Average UV index in January
Marengo, IL

Average UV index in January - Marengo, 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).

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Average cloud cover in January
Marengo, IL

Average cloud cover in January - Marengo, IL
  • Average cloud cover in January: 63

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).

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Average visibility in January
Marengo, IL

Average visibility in January - Marengo, 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).

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Marengo, Illinois, USA

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