January weather forecast
Effingham, IL

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Weather in January

January, the same as December, is an icy winter month in Effingham, Illinois, with temperature in the range of an average low of 23°F (-5°C) and an average high of 35.2°F (1.8°C).

Temperature

January proves to be the coldest month, recording an average maximum temperature of 35.2°F (1.8°C) and a minimum temperature of 23°F (-5°C).

Humidity

The average relative humidity in January is 78%.

Rainfall

In Effingham, Illinois, during January, the rain falls for 6.9 days and regularly aggregates up to 1.46" (37mm) of precipitation. In Effingham, during the entire year, the rain falls for 135.9 days and collects up to 21.89" (556mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Effingham. January is the month with the most snowfall in Effingham. Snow falls for 4.8 days and accumulates 1.18" (30mm) of snow.

Daylight

In January, the average length of the day is 9h and 47min.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:41 pm. On the last day of January, sunrise is at 7:01 am and sunset at 5:13 pm CST.

Sunshine

The month with the least sunshine in Effingham 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 in Effingham. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A typical high UV index of 2 in January suggests the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest in Effingham?

Effingham experiences its lowest temperatures in January, with an average peak of 35.2°F (1.8°C) and a low of 23°F (-5°C).

How cold is it in Effingham in January?

The high-temperature, in January, in Effingham, is 35.2°F (1.8°C), while the low-temperature averages to 23°F (-5°C).

What is the average humidity in January in Effingham?

In January, the average relative humidity in Effingham is 78%.

How many days does it rain in January in Effingham?

In Effingham, in January, it is raining for 6.9 days, with typically 1.46" (37mm) of accumulated precipitation.

What is the snowiest month in Effingham?

January is the month with the most snowfall. Snow falls for 4.8 days and accumulates 1.18" (30mm) of snow.

How many days does it snow in January in Effingham?

In Effingham, Illinois, during January, snow falls for 4.8 days and regularly aggregates up to 1.18" (30mm) of snow.

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

The average day length in January in Effingham is 9h and 47min.

What time are sunrise and sunset in January in Effingham?

On the first day of January in Effingham, sunrise is at 7:13 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 5:13 pm CST.

What is the month with the least sunshine in Effingham?

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

How many hours of sunshine does Effingham have in January?

The average sunshine duration in January in Effingham, Illinois, is 4.3h.

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

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

How high is the UV index in January in Effingham?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health threat 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
Effingham, IL

Average temperature in January - Effingham, IL
  • Average high temperature in January: 35.2°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in January: 23°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (23°F).

Average pressure in January
Effingham, IL

Average pressure in January - Effingham, 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
Effingham, IL

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

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6mph).

Average humidity in January
Effingham, IL

Average humidity in January - Effingham, IL
  • Average humidity in January: 78%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in January
Effingham, IL

Average rainfall in January - Effingham, IL
  • Average rainfall in January: 1.46"

The wettest month (with the highest rainfall) is April (2.83").
The driest month (with the least rainfall) is February (1.06").

Average rainfall days in January
Effingham, IL

Average rainfall days in January - Effingham, IL
  • Average rainfall days in January: 6.9 days

The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (6.9 days).

Average snowfall in January
Effingham, IL

Average snowfall in January - Effingham, IL
  • Average snowfall in January: 1.18"

The month with the highest snowfall is January (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Effingham, IL

Average snowfall days in January - Effingham, IL
  • Average snowfall days in January: 4.8 days

The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - Effingham, 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 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in January
Effingham, IL

Average sunshine days in January - Effingham, IL
  • Average sunshine days in January: 20 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (12.9 days).

Average UV index in January
Effingham, IL

Average UV index in January - Effingham, 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
Effingham, IL

Average cloud cover in January - Effingham, IL
  • Average cloud cover in January: 53

The months with the most cloud cover are January and February (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).

Average visibility in January
Effingham, IL

Average visibility in January - Effingham, 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).

Effingham, Illinois, USA

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