January weather forecast
Saint Elmo, IL

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Weather in January

January, the same as December, is a wintry winter month in Saint Elmo, Illinois, with an average temperature varying between 36°F (2.2°C) and 23.4°F (-4.8°C).

Temperature

January, having an average high-temperature of 36°F (2.2°C) and an average low-temperature of 23.4°F (-4.8°C), is the coldest month.

Humidity

In Saint Elmo, the average relative humidity in January is 77%.

Rainfall

In Saint Elmo, during January, the rain falls for 7.3 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, there are 139.3 rainfall days, and 23.94" (608mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Saint Elmo are January through April, November and December. In Saint Elmo, during January, snow falls for 5.7 days and regularly aggregates up to 1.34" (34mm) of snow. Throughout the year, in Saint Elmo, there are 18.9 snowfall days, and 5.24" (133mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 48min.
On the first day of January, sunrise is at 7:14 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:14 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 4.3h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In January, the maximum UV index of 2 transforms into these recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Saint Elmo?

The coldest period in Saint Elmo, Illinois, is January, when temperatures fluctuate between an average high of 36°F (2.2°C) and a low of 23.4°F (-4.8°C).

How cold is January in Saint Elmo?

The high-temperature in Saint Elmo, Illinois, during January is 36°F (2.2°C) and the low-temperature is 23.4°F (-4.8°C).

What is the average humidity in January in Saint Elmo?

In January, the average relative humidity is 77%.

How much does it rain in Saint Elmo in January?

In January, in Saint Elmo, the rain falls for 7.3 days. Throughout January, 1.61" (41mm) of precipitation is accumulated.

How many days does it snow in January in Saint Elmo?

In Saint Elmo, during January, snow falls for 5.7 days and regularly aggregates up to 1.34" (34mm) of snow.

What is the average length of the day in January in Saint Elmo?

In January, the average day length in Saint Elmo, Illinois, is 9h and 48min.

What time are sunrise and sunset in January in Saint Elmo?

On the first day of January, sunrise is at 7:14 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:14 pm CST.

What is the month with the least sunshine in Saint Elmo?

January has the least sunshine of the year, with an average of 4.3h of sunshine.

How many hours of sunshine does Saint Elmo have in January?

The average sunshine duration in January is 4.3h.

When is the lowest UV index in Saint Elmo?

The months with the lowest UV index in Saint Elmo, Illinois, are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Saint Elmo?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Saint Elmo, IL

Average temperature in January - Saint Elmo, IL
  • Average high temperature in January: 36°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in January: 23.4°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in January
Saint Elmo, IL

Average pressure in January - Saint Elmo, IL
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in January
Saint Elmo, IL

Average wind speed in January - Saint Elmo, IL
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

Average humidity in January
Saint Elmo, IL

Average humidity in January - Saint Elmo, IL
  • Average humidity in January: 77%

The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in January
Saint Elmo, IL

Average rainfall in January - Saint Elmo, IL
  • Average rainfall in January: 1.61"

The wettest months (with the highest rainfall) are April and June (2.95").
The driest month (with the least rainfall) is February (1.18").

Average rainfall days in January
Saint Elmo, IL

Average rainfall days in January - Saint Elmo, IL
  • Average rainfall days in January: 7.3 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in January
Saint Elmo, IL

Average snowfall in January - Saint Elmo, IL
  • Average snowfall in January: 1.34"

The month with the highest snowfall is December (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Saint Elmo, IL

Average snowfall days in January - Saint Elmo, IL
  • Average snowfall days in January: 5.7 days

The month with the highest number of snowfall days is January (5.7 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
Saint Elmo, IL

Average daylight in January / Average sunshine in January - Saint Elmo, IL
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in January
Saint Elmo, IL

Average sunshine days in January - Saint Elmo, IL
  • Average sunshine days in January: 19.5 days

The months with the most sunshine days are January and November (19.5 days).
The months with the least sunshine days are May and July (12.3 days).

Average UV index in January
Saint Elmo, IL

Average UV index in January - Saint Elmo, 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
Saint Elmo, IL

Average cloud cover in January - Saint Elmo, IL
  • Average cloud cover in January: 53

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and July (Cloud cover 29).

Average visibility in January
Saint Elmo, IL

Average visibility in January - Saint Elmo, IL
  • Average visibility in January: 6mi

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

Saint Elmo, Illinois, USA

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