January weather forecast
Zion, IL

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Weather in January

January, the same as December, in Zion, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 27.9°F (-2.3°C) and 18.3°F (-7.6°C).

Temperature

January, with its high-temperature average of 27.9°F (-2.3°C) and a low-temperature average of 18.3°F (-7.6°C), is the coldest month.

Humidity

With an average relative humidity of 83%, January is the most humid month in Zion.

Rainfall

In Zion, Illinois, in January, it is raining for 6.4 days, with typically 1.06" (27mm) of accumulated precipitation. In Zion, Illinois, during the entire year, the rain falls for 142.5 days and collects up to 21.5" (546mm) of precipitation.

Snowfall

Months with snowfall in Zion, Illinois, are January through April, October through December. In Zion, Illinois, in January, snow falls for 12.4 days, with typically accumulated 2.24" (57mm) of snow. Throughout the year, in Zion, there are 45.5 snowfall days, and 9.37" (238mm) of snow is accumulated.

Daylight

The average length of the day in January in Zion is 9h and 29min.
On the first day of January in Zion, sunrise is at 7:20 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:03 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 3.7h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 1 during January leads to these instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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 Zion?

January, with its average high-temperature of 27.9°F (-2.3°C) and an average low-temperature of 18.3°F (-7.6°C), holds the record as the coldest month in Zion.

How cold is it in Zion in January?

In January, the average high-temperature and low-temperature are 27.9°F (-2.3°C) and 18.3°F (-7.6°C) respectively.

What is the most humid month in Zion?

With an average relative humidity of 83%, January is the most humid month in Zion.

What is the average humidity in January in Zion?

In Zion, Illinois, the average relative humidity in January is 83%.

How much does it rain in Zion in January?

In Zion, during January, the rain falls for 6.4 days and regularly aggregates up to 1.06" (27mm) of precipitation.

How much does it snow in Zion in January?

In January, it is snowing for 12.4 days. Throughout January, 2.24" (57mm) of snow is accumulated.

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

The average day length in January in Zion, Illinois, is 9h and 29min.

What time are sunrise and sunset in January in Zion?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 4:28 pm. On the last day of the month, in Zion, sunrise is at 7:06 am and sunset at 5:03 pm CST.

What is the month with the least sunshine in Zion?

With an average of 3.7h of sunshine, January has the least sunshine of the year in Zion, Illinois.

How many hours of sunshine does Zion have in January?

In Zion, Illinois, the average sunshine duration in January is 3.7h.

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

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

What is the UV index reading in January in Zion?

In January, the average daily maximum UV index in Zion is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to the Sun's 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
Zion, IL

Average temperature in January - Zion, IL
  • Average high temperature in January: 27.9°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in January: 18.3°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

Average pressure in January
Zion, IL

Average pressure in January - Zion, IL
  • Average pressure in January: 30.1"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in January
Zion, IL

Average wind speed in January - Zion, IL
  • Average wind speed in January: 11.9mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

Average humidity in January
Zion, IL

Average humidity in January - Zion, IL
  • Average humidity in January: 83%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).

Average rainfall in January
Zion, IL

Average rainfall in January - Zion, IL
  • Average rainfall in January: 1.06"

The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").

Average rainfall days in January
Zion, IL

Average rainfall days in January - Zion, IL
  • Average rainfall days in January: 6.4 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).

Average snowfall in January
Zion, IL

Average snowfall in January - Zion, IL
  • Average snowfall in January: 2.24"

The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Zion, IL

Average snowfall days in January - Zion, IL
  • Average snowfall days in January: 12.4 days

The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Zion, IL
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 3h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in January
Zion, IL

Average sunshine days in January - Zion, IL
  • Average sunshine days in January: 12.4 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in January
Zion, IL

Average UV index in January - Zion, IL
  • Average UV index in January: 1

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in January
Zion, IL

Average cloud cover in January - Zion, IL
  • Average cloud cover in January: 61

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in January
Zion, IL

Average visibility in January - Zion, 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).

Zion, Illinois, USA

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