January weather forecastZion, IL
January
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 9h and 30min
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 42min
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: 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: 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: 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: 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).
