January weather forecast
Thomasboro, IL

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Weather in January

January, the same as December, in Thomasboro, Illinois, is another subzero cold winter month, with temperature in the range of an average low of 19.8°F (-6.8°C) and an average high of 31.5°F (-0.3°C).

Temperature

The coldest temperatures occur during January, when averages reach a peak of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C).

Humidity

In January, the average relative humidity is 81%.

Rainfall

In Thomasboro, in January, it is raining for 5.7 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 121.5 rainfall days, and 13.46" (342mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Thomasboro are January through April, November and December. In January, it is snowing for 7.9 days. Throughout January, 0.98" (25mm) of snow is accumulated. Throughout the year, in Thomasboro, there are 26.9 snowfall days, and 3.78" (96mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 41min.
On the first day of the month, sunrise is at 7:15 am and sunset at 4:37 pm. On the last day of January, sunrise is at 7:02 am and sunset at 5:09 pm CST.

Sunshine

With an average of 4h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 2 during January leads to these advisories:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Thomasboro?

Temperature records in Thomasboro mark January as the coldest month, with highs averaging 31.5°F (-0.3°C) and lows at 19.8°F (-6.8°C).

How cold is January in Thomasboro?

An average high-temperature, in January, in Thomasboro, is 31.5°F (-0.3°C) and the average low-temperature is 19.8°F (-6.8°C).

What is the average humidity in January in Thomasboro?

In Thomasboro, the average relative humidity in January is 81%.

How much does it rain in Thomasboro in January?

In Thomasboro, Illinois, in January, during 5.7 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

How much does it snow in Thomasboro in January?

In January, in Thomasboro, Illinois, it is snowing for 7.9 days. Throughout January, 0.98" (25mm) of snow is accumulated.

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

In Thomasboro, the average day length in January is 9h and 41min.

When are sunrise and sunset in January in Thomasboro?

On the first day of January in Thomasboro, Illinois, sunrise is at 7:15 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:09 pm CST.

What is the month with the least sunshine in Thomasboro?

With an average of 4h of sunshine, January has the least sunshine of the year.

How many hours of sunshine does Thomasboro have in January?

In January, the average sunshine duration in Thomasboro is 4h.

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

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in January in Thomasboro?

In January, the average daily maximum UV index in Thomasboro, Illinois, is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe 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
Thomasboro, IL

Average temperature in January - Thomasboro, IL
  • Average high temperature in January: 31.5°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in January: 19.8°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 (19.8°F).

Average pressure in January
Thomasboro, IL

Average pressure in January - Thomasboro, 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 (29.92"Hg).

Average wind speed in January
Thomasboro, IL

Average wind speed in January - Thomasboro, IL
  • Average wind speed in January: 10.7mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity in January
Thomasboro, IL

Average humidity in January - Thomasboro, IL
  • Average humidity in January: 81%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

Average rainfall in January
Thomasboro, IL

Average rainfall in January - Thomasboro, IL
  • Average rainfall in January: 0.87"

The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is February (0.67").

Average rainfall days in January
Thomasboro, IL

Average rainfall days in January - Thomasboro, IL
  • Average rainfall days in January: 5.7 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (4.6 days).

Average snowfall in January
Thomasboro, IL

Average snowfall in January - Thomasboro, IL
  • Average snowfall in January: 0.98"

The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Thomasboro, IL

Average snowfall days in January - Thomasboro, IL
  • Average snowfall days in January: 7.9 days

The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 4h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in January
Thomasboro, IL

Average sunshine days in January - Thomasboro, IL
  • Average sunshine days in January: 19.8 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in January
Thomasboro, IL

Average UV index in January - Thomasboro, IL
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in January
Thomasboro, IL

Average cloud cover in January - Thomasboro, 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 August (Cloud cover 31).

Average visibility in January
Thomasboro, IL

Average visibility in January - Thomasboro, 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).

Thomasboro, Illinois, USA

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