January weather forecast and climate
Marion, IL

Weather in January

January, like December, in Marion, Illinois, is a wintry winter month, with average temperature varying between 39.6°F (4.2°C) and 26.1°F (-3.3°C).

Temperature

The coldest month is January, with an average high-temperature of 39.6°F (4.2°C) and an average low-temperature of 26.1°F (-3.3°C).

Humidity

In Marion, the average relative humidity is 76%.

Rainfall

In Marion, Illinois,, during 8.8 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, in Marion, Illinois, there are 137.6 rainfall days, and 23.03" (585mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. Months with the most snowfall are January and February, with an average 0.94" (24mm) of accumulated snow.

Daylight

In Marion, the average length of the day is 9.9h.

Sunshine

With an average of 4.6h of sunshine, January has the least sunshine of the year in Marion.

UV index

January, February 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 unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the coldest month in Marion?

January is the coldest month in Marion, with an average high-temperature of 39.6°F (4.2°C) and an average low-temperature of 26.1°F (-3.3°C).

What is the average humidity in January in Marion?

In January, the average relative humidity in Marion is 76%.

How much does it rain in Marion in January?

In Marion, during January, the rain falls for 8.8 days and regularly aggregates up to 1.42" (36mm) of precipitation.

What is the snowiest month in Marion?

Months with the most snowfall in Marion, Illinois, are January and February, with an average 0.94" (24mm) of accumulated snow.

How much does it snow in Marion in January?

In Marion, Illinois, during January, snow falls for 4.1 days and regularly aggregates up to 0.94" (24mm) of snow.

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

In January, the average length of the day in Marion, Illinois, is 9.9h.

What is the month with the least sunshine in Marion?

The month with the least sunshine in Marion, Illinois, is January, with an average of 4.6h of sunshine.

How long on average sun shines in January in Marion?

In January, the average sunshine in Marion, Illinois, is 4.6h.

What is the month with the lowest UV index in Marion?

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

What is the UV index reading in January in Marion?

In January, the average daily maximum UV index in Marion, Illinois, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays.

Average temperature in January
Marion, IL

Average temperature in January - Marion, IL
  • Average high temperature in January: 39.6°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in January: 26.1°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

[Resources]

Average pressure in January
Marion, IL

Average pressure in January - Marion, IL
  • Average pressure in January: 30.16"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.94").

[Resources]

Average wind speed in January
Marion, IL

Average wind speed in January - Marion, IL
  • Average wind speed in January: 9.4mph

The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

[Resources]

Average humidity in January
Marion, IL

Average humidity in January - Marion, IL
  • Average humidity in January: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

[Resources]

Average rainfall in January
Marion, IL

Average rainfall in January - Marion, IL
  • Average rainfall in January: 1.42"

The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.1").

[Resources]

Average rainfall days in January
Marion, IL

Average rainfall days in January - Marion, IL
  • Average rainfall days in January: 8.8 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (7.8 days).

[Resources]

Average snowfall in January
Marion, IL

Average snowfall in January - Marion, IL
  • Average snowfall in January: 0.94"

Months with the highest snowfall are January and February (0.94").
Months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days in January
Marion, IL

Average snowfall days in January - Marion, IL
  • Average snowfall days in January: 4.1 days

The month with the highest number of snowfall days is February (4.3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

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

Average daylight in January / Average sunshine in January - Marion, IL
  • Average daylight in January: 9.9h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in January: 4.6h

Months with the most sunshine are June and July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 4.6h).

[Resources]

Average sunshine days in January
Marion, IL

Average sunshine days in January - Marion, IL
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (12.9 days).

[Resources]

Average UV index in January
Marion, IL

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

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

[Resources]

Average cloud cover in January
Marion, IL

Average cloud cover in January - Marion, IL
  • Average cloud cover in January: 50

The month with the most cloud cover is February (Cloud cover 51).
Months with the least cloud cover are June, August and September (Cloud cover 28).

[Resources]

Average visibility in January
Marion, IL

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

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location