Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January, characterized by an average high temperature of 28.8°F (-1.8°C) and a low temperature of 16.5°F (-8.6°C), is generally the coldest month.Humidity
The average relative humidity in January in Princeton is 83%.Rainfall
January is the month with the least rainfall. Rain falls for 4.8 days and accumulates 0.75" (19mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. January is the month with the most snowfall in Princeton. Snow falls for 10.4 days and accumulates 2.09" (53mm) of snow.Daylight
In Princeton, Illinois, the average length of the day in January is 9h and 35min.On the first day of January, sunrise is at 7:23 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:12 pm CST.
Sunshine
With an average of 3.8h of sunshine, January has the least sunshine of the year in Princeton.UV index
The months with the lowest UV index in Princeton are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 1 in January transforms into this advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. 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. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What month is the coldest in Princeton?
How cold is it in Princeton in January?
What is the average humidity in January in Princeton?
What is the driest month in Princeton?
How much does it rain in Princeton in January?
When does it snow the most in Princeton?
How much does it snow in Princeton in January?
How many hours of daylight does Princeton have in January?
What time are sunrise and sunset in January in Princeton?
What is the month with the least sunshine in Princeton?
How many hours of sunshine does Princeton have in January?
When is the lowest UV index in Princeton?
How high is the UV index in January in Princeton?
Average temperature in January
Princeton, IL
- Average high temperature in January: 28.8°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in January: 16.5°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in January
Princeton, IL
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Princeton, IL
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in January
Princeton, IL
- Average humidity in January: 83%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Princeton, IL
- Average rainfall in January: 0.75"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in January
Princeton, IL
- Average rainfall days in January: 4.8 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in January
Princeton, IL
- Average snowfall in January: 2.09"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Princeton, IL
- Average snowfall days in January: 10.4 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Princeton, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 3h and 5min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Princeton, IL
- Average sunshine days in January: 17.8 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in January
Princeton, IL
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Princeton, IL
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in January
Princeton, 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).
Princeton, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
