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
With its high average temperature of 33.3°F (0.7°C) and a low of 21°F (-6.1°C), January is regarded as the coldest month.Humidity
In January, the average relative humidity is 80%.Rainfall
In Allerton, during January, the rain falls for 6.9 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, in Allerton, there are 132 rainfall days, and 15.94" (405mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Allerton, in January, snow falls for 8 days, with typically accumulated 1.14" (29mm) of snow. In Allerton, during the entire year, snow falls for 25.6 days and aggregates up to 4.41" (112mm) of snow.Daylight
In January, the average length of the day is 9h and 43min.On the first day of January, sunrise is at 7:13 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 5:09 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 4.1h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 2 during January morphs into the following directions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is January in Allerton?
What is the average humidity in January?
How many days does it rain in January in Allerton?
How many days does it snow in January?
How many hours of daylight does Allerton have in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine in Allerton?
How many hours of sunshine does Allerton have in January?
What are the months with the lowest UV index?
How high is the UV index in January in Allerton?
Average temperature in January
Allerton, IL
- Average high temperature in January: 33.3°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in January: 21°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in January
Allerton, IL
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Allerton, IL
- Average wind speed in January: 10.8mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in January
Allerton, IL
- Average humidity in January: 80%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Allerton, IL
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is April (1.97").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in January
Allerton, IL
- Average rainfall days in January: 6.9 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (6 days).
Average snowfall in January
Allerton, IL
- Average snowfall in January: 1.14"
The month with the highest snowfall is December (1.26").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Allerton, IL
- Average snowfall days in January: 8 days
The month with the highest number of snowfall days is January (8 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
Allerton, 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 1min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in January
Allerton, IL
- Average sunshine days in January: 18.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in January
Allerton, 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
Allerton, IL
- Average cloud cover in January: 56
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in January
Allerton, 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).
Allerton, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location