January weather forecast
Fairmount, IL

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Weather in January

January, the same as December, in Fairmount, Illinois, is another subzero cold winter month, with temperature in the range of an average high of 31.6°F (-0.2°C) and an average low of 20.5°F (-6.4°C).

Temperature

Fairmount's coldest month, January, generally records average temperatures ranging from a high of 31.6°F (-0.2°C) to a low of 20.5°F (-6.4°C).

Humidity

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

Rainfall

In January, the rain falls for 7.3 days. Throughout January, 1.61" (41mm) of precipitation is accumulated. In Fairmount, during the entire year, the rain falls for 151.8 days and collects up to 25.63" (651mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Fairmount, during January, snow falls for 10.6 days and regularly aggregates up to 2.28" (58mm) of snow. In Fairmount, during the entire year, snow falls for 35.2 days and aggregates up to 8.82" (224mm) of snow.

Daylight

The average length of the day in January is 9h and 43min.
On the first day of January, sunrise is at 7:13 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 5:08 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 reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 2 during January translates into these guidelines:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. To guard against the harmful effects of the Sun, minimize exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

January, marked by an average high-temperature of 31.6°F (-0.2°C) and a low-temperature of 20.5°F (-6.4°C), is the coldest month.

How cold is it in January?

In January, in Fairmount, the average high-temperature is 31.6°F (-0.2°C), and the average low-temperature is 20.5°F (-6.4°C).

What is the average humidity in January?

The average relative humidity in January is 81%.

How many days does it rain in January?

In Fairmount, in January, during 7.3 rainfall days, 1.61" (41mm) of precipitation is typically accumulated.

How much does it snow in January?

In Fairmount, in January, snow falls for 10.6 days, with typically accumulated 2.28" (58mm) of snow.

What is the average length of the day in January?

In Fairmount, the average day length in January is 9h and 43min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 7:13 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 5:08 pm CST.

What is the month with the least sunshine in Fairmount?

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

How long on average sun shines in January?

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

When is the lowest UV index in Fairmount?

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

How high is the UV index in January?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to UV radiation.
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
Fairmount, IL

Average temperature in January - Fairmount, IL
  • Average high temperature in January: 31.6°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in January: 20.5°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in January
Fairmount, IL

Average pressure in January - Fairmount, 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 (29.93"Hg).

Average wind speed in January
Fairmount, IL

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

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity in January
Fairmount, IL

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

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

Average rainfall in January
Fairmount, IL

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

The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").

Average rainfall days in January
Fairmount, IL

Average rainfall days in January - Fairmount, IL
  • Average rainfall days in January: 7.3 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).

Average snowfall in January
Fairmount, IL

Average snowfall in January - Fairmount, IL
  • Average snowfall in January: 2.28"

The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Fairmount, IL

Average snowfall days in January - Fairmount, IL
  • Average snowfall days in January: 10.6 days

The month with the highest number of snowfall days is January (10.6 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
Fairmount, IL

Average daylight in January / Average sunshine in January - Fairmount, 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
Fairmount, IL

Average sunshine days in January - Fairmount, IL
  • Average sunshine days in January: 15 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).

Average UV index in January
Fairmount, IL

Average UV index in January - Fairmount, 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
Fairmount, IL

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

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).

Average visibility in January
Fairmount, IL

Average visibility in January - Fairmount, 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).

Fairmount, Illinois, USA

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