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
New Haven's coldest weather arrives in January, when temperatures average a high of 38.3°F (3.5°C) and a low of 26.1°F (-3.3°C).Humidity
The average relative humidity in January is 77%.Rainfall
In New Haven, in January, during 5 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In New Haven, during the entire year, the rain falls for 100.2 days and collects up to 8.7" (221mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. The months with the most snowfall are January and February, with an average 0.28" (7mm) of accumulated snow.Daylight
In January, the average length of the day in New Haven is 9h and 53min.On the first day of January in New Haven, sunrise is at 7:08 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 5:14 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 4.4h of sunshine.UV index
The months with the lowest UV index in New Haven are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: In January, the maximum UV index of 2 suggests this advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in New Haven?
How cold is January in New Haven?
What is the average humidity in January in New Haven?
How many days does it rain in January in New Haven?
When does it snow the most in New Haven?
How much does it snow in New Haven in January?
What is the average length of the day in January in New Haven?
When is the sunrise / sunset in January in New Haven?
What is the month with the least sunshine in New Haven?
How long on average sun shines in January in New Haven?
When is the lowest UV index in New Haven?
What is the UV index reading in January in New Haven?
Average temperature in January
New Haven, IL
- Average high temperature in January: 38.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in January: 26.1°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in January
New Haven, IL
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
New Haven, IL
- Average wind speed in January: 10mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in January
New Haven, IL
- Average humidity in January: 77%
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in January
New Haven, IL
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is April (1.06").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in January
New Haven, IL
- Average rainfall days in January: 5 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is January (5 days).
Average snowfall in January
New Haven, IL
- Average snowfall in January: 0.28"
The months with the highest snowfall are January and February (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
New Haven, IL
- Average snowfall days in January: 3.3 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
New Haven, IL
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in January
New Haven, IL
- Average sunshine days in January: 23.3 days
The month with the most sunshine days is October (23.4 days).
The month with the least sunshine days is May (15.8 days).
Average UV index in January
New Haven, IL
- Average UV index in January: 2
The months with the highest UV index are May, 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
New Haven, IL
- Average cloud cover in January: 51
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in January
New Haven, 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).
New Haven, Illinois, USA
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