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 sea temperature 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 Norwalk, January is the coldest month, with temperatures averaging a high of 35.8°F (2.1°C) and a low of 26.4°F (-3.1°C).Humidity
In January, the average relative humidity is 74%.Rainfall
January and February are months with the least rain when the rain falls for 8.3 days and typically aggregates up to 2.36" (60mm) of rain.Snowfall
Months with snowfall are January through April, November and December. In Norwalk, during January, snow falls for 6.7 days and regularly aggregates up to 2.01" (51mm) of snow. In Norwalk, Connecticut, during the entire year, snow falls for 24.6 days and aggregates up to 9.61" (244mm) of snow.Ocean temperature
In Norwalk, the average seawater temperature in January is 41.5°F (5.3°C).Note: Caution: 41.5°F (5.3°C) temperatures below 50°F (10°C) during swimming can result in intense cold shock and quickened breathing.
Daylight
In Norwalk, the average length of the day in January is 9h and 37min.On the first day of the month, sunrise is at 7:18 am and sunset at 4:35 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:08 pm EST.
Sunshine
In January, the average sunshine 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 in Norwalk. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 2 in January translates into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Norwalk?
How cold is it in Norwalk in January?
What is the average humidity in January in Norwalk?
What is the driest month in Norwalk?
How many days does it rain in January in Norwalk?
How many days does it snow in January in Norwalk?
What is the water temperature in January in Norwalk?
What is the average length of the day in January in Norwalk?
When are sunrise and sunset in January in Norwalk?
How long on average sun shines in January in Norwalk?
What is the month with the lowest UV index in Norwalk?
What is the UV index intensity in January in Norwalk?
Average temperature in January
Norwalk, CT
- Average high temperature in January: 35.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in January: 26.4°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 (26.4°F).
Average pressure in January
Norwalk, CT
- Average pressure in January: 30.05"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
Norwalk, CT
- Average wind speed in January: 10.1mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in January
Norwalk, 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
Norwalk, CT
- Average rainfall in January: 2.36"
The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.36").
Average rainfall days in January
Norwalk, CT
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in January
Norwalk, CT
- Average snowfall in January: 2.01"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Norwalk, CT
- Average snowfall days in January: 6.7 days
The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in January
Norwalk, CT
- Average sea temperature in January: 41.5°F
The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (39°F).
Average daylight in January /
Average sunshine in January
Norwalk, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Norwalk, CT
- Average sunshine days in January: 17.8 days
The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in January
Norwalk, 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
Norwalk, CT
- Average cloud cover in January: 44
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Norwalk, 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).
Norwalk, Connecticut, USA
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