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
In West Haven, the lowest temperatures are generally noted in January, averaging a high of 35.1°F (1.7°C) and a low of 25.5°F (-3.6°C).Humidity
The average relative humidity in January is 74%.Rainfall
In West Haven, during January, the rain falls for 9.4 days and regularly aggregates up to 2.4" (61mm) of precipitation. In West Haven, during the entire year, the rain falls for 167.2 days and collects up to 35.71" (907mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In West Haven, during January, snow falls for 6.1 days and regularly aggregates up to 2.13" (54mm) of snow. In West Haven, during the entire year, snow falls for 23.1 days and aggregates up to 9.21" (234mm) of snow.Daylight
In West Haven, the average length of the day in January is 9h and 36min.On the first day of the month, sunrise is at 7:17 am and sunset at 4:33 pm. On the last day of January, in West Haven, sunrise is at 7:04 am and sunset at 5:06 pm EST.
Sunshine
The average sunshine in January is 5.1h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 2 in January leads to these recommendations:
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. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is January?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January in West Haven?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How many hours of sunshine does West Haven have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
West Haven, CT
- Average high temperature in January: 35.1°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in January: 25.5°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure in January
West Haven, CT
- Average pressure in January: 30.04"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
West Haven, CT
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in January
West Haven, CT
- Average humidity in January: 74%
The months with the highest relative humidity are February, May and June (76%).
The months with the lowest relative humidity are April and November (72%).
Average rainfall in January
West Haven, CT
- Average rainfall in January: 2.4"
The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in January
West Haven, CT
- Average rainfall days in January: 9.4 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in January
West Haven, CT
- Average snowfall in January: 2.13"
The month with the highest snowfall is March (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
West Haven, CT
- Average snowfall days in January: 6.1 days
The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
West Haven, CT
- 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 18min).
- Average sunshine in January: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
West Haven, CT
- Average sunshine days in January: 17 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in January
West Haven, CT
- 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, March, November and December (UV index 2).
Average cloud cover in January
West Haven, CT
- Average cloud cover in January: 44
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
West Haven, CT
- 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).
West Haven, Connecticut, USA
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