January weather forecast
Chillicothe, IL

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Weather in January

January, the same as December, in Chillicothe, Illinois, is a freezing cold winter month, with an average temperature ranging between max 29.8°F (-1.2°C) and min 18.1°F (-7.7°C).

Temperature

Chillicothe's January weather, marked by an average high temperature of 29.8°F (-1.2°C) and an average low temperature of 18.1°F (-7.7°C), is the coldest in the year.

Humidity

The average relative humidity in January in Chillicothe, Illinois, is 82%.

Rainfall

January is the month with the least rainfall. Rain falls for 4.8 days and accumulates 0.67" (17mm) of precipitation.

Snowfall

Months with snowfall in Chillicothe, Illinois, are January through April, October through December. January is the month with the most snowfall. Snow falls for 9.2 days and accumulates 1.93" (49mm) of snow.

Daylight

In Chillicothe, the average length of the day in January is 9h and 38min.
On the first day of the month, sunrise is at 7:22 am and sunset at 4:40 pm. On the last day of January, in Chillicothe, sunrise is at 7:09 am and sunset at 5:13 pm CST.

Sunshine

With an average of 3.8h of sunshine, January has the least sunshine of the year in Chillicothe.

UV index

The months with the lowest UV index in Chillicothe are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 1 in January transforms into this advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

What part of the year is the coldest in Chillicothe?

January, marked by an average high-temperature of 29.8°F (-1.2°C) and a low-temperature of 18.1°F (-7.7°C), is the coldest month in Chillicothe, Illinois.

How cold is it in Chillicothe in January?

January temperatures in Chillicothe, Illinois, vary between a high-temperature of 29.8°F (-1.2°C) and a low-temperature of 18.1°F (-7.7°C).

What is the average humidity in January in Chillicothe?

In January, the average relative humidity is 82%.

What is the driest month in Chillicothe?

The month with the least rainfall in Chillicothe is January, when the rain falls for 4.8 days and typically collects 0.67" (17mm) of precipitation.

How many days does it rain in January in Chillicothe?

In Chillicothe, Illinois, in January, it is raining for 4.8 days, with typically 0.67" (17mm) of accumulated precipitation.

When does it snow the most in Chillicothe?

January is the month with the most snowfall. Snow falls for 9.2 days and accumulates 1.93" (49mm) of snow.

How many days does it snow in January in Chillicothe?

In Chillicothe, Illinois, in January, during 9.2 snowfall days, 1.93" (49mm) of snow is typically accumulated.

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

In Chillicothe, the average day length in January is 9h and 38min.

When are sunrise and sunset in January in Chillicothe?

In January, on the first day of the month, sunrise is at 7:22 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:13 pm CST.

What is the month with the least sunshine in Chillicothe?

The month with the least sunshine in Chillicothe is January, with an average of 3.8h of sunshine.

How many hours of sunshine does Chillicothe have in January?

The average sunshine duration in January in Chillicothe is 3.8h.

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

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

What is the UV index intensity in January in Chillicothe?

In Chillicothe, Illinois, the average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
36°F 2.2°C
29.8°F -1.2°C
35.2°F 1.8°C
Average low temperature
25.7°F -3.5°C
18.1°F -7.7°C
21.7°F -5.7°C
Average pressure
30.11" 765mmHg
30.14" 766mmHg
30.11" 765mmHg
Average wind speed
9.8mph 15.8km/h
10.4mph 16.7km/h
10.4mph 16.7km/h
Average max. wind speed
10.4mph 16.7km/h
11.1mph 17.9km/h
11.1mph 17.9km/h
Average wind speed gusts
15.8mph 25.4km/h
16.6mph 26.7km/h
16.5mph 26.6km/h
Average humidity
81%
82%
81%
Average rainfall
0.75" 19mm
0.67" 17mm
0.71" 18mm
Average rainfall days
5.7
4.8
4.5
Average snowfall
0.94" 24mm
1.93" 49mm
1.26" 32mm
Average snowfall days
6.3
9.2
7
Average daylight
9h 2min
9h 4min
10h 4min
Average sunshine
4h 2min
3h 5min
4h 1min
Average sunshine days
19.9
19.4
17.3
Average UV index
1
1
2
Average cloud cover
54%
58%
56%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Chillicothe, IL

Average temperature in January - Chillicothe, IL
  • Average high temperature in January: 29.8°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in January: 18.1°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

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Average pressure in January
Chillicothe, IL

Average pressure in January - Chillicothe, IL
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Chillicothe, IL

Average wind speed in January - Chillicothe, IL
  • Average wind speed in January: 10.4mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in January
Chillicothe, IL

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

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in January
Chillicothe, IL

Average rainfall in January - Chillicothe, IL
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in January
Chillicothe, IL

Average rainfall days in January - Chillicothe, IL
  • Average rainfall days in January: 4.8 days

The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is February (4.5 days).

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Average snowfall in January
Chillicothe, IL

Average snowfall in January - Chillicothe, IL
  • Average snowfall in January: 1.93"

The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Chillicothe, IL

Average snowfall days in January - Chillicothe, IL
  • Average snowfall days in January: 9.2 days

The month with the highest number of snowfall days is January (9.2 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
Chillicothe, IL

Average daylight in January / Average sunshine in January - Chillicothe, 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 18min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in January
Chillicothe, IL

Average sunshine days in January - Chillicothe, IL
  • Average sunshine days in January: 19.4 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (12.4 days).

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Average UV index in January
Chillicothe, IL

Average UV index in January - Chillicothe, 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
Chillicothe, IL

Average cloud cover in January - Chillicothe, IL
  • Average cloud cover in January: 58

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 31).

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Average visibility in January
Chillicothe, IL

Average visibility in January - Chillicothe, IL
  • Average visibility in January: 6mi

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

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Chillicothe, Illinois, USA

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