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
The month of January sees the lowest average temperatures, reaching 33.3°F (0.7°C) at the peak and 21.4°F (-5.9°C) at the low.Humidity
In January, the average relative humidity is 77%.Rainfall
In Watertown, in January, during 7.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Watertown, during the entire year, the rain falls for 158.5 days and collects up to 34.57" (878mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Watertown, Connecticut, in January, during 7.7 snowfall days, 4.13" (105mm) of snow is typically accumulated. In Watertown, during the entire year, snow falls for 34.9 days and aggregates up to 20.35" (517mm) of snow.Daylight
In January, the average length of the day is 9h and 34min.On the first day of the month, sunrise is at 7:19 am and sunset at 4:32 pm. On the last day of January, in Watertown, sunrise is at 7:05 am and sunset at 5:06 pm EST.
Sunshine
In January, the average sunshine is 4.9h.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 health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in January interprets into the following advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Watertown, CT
- Average high temperature in January: 33.3°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in January: 21.4°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in January
Watertown, 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
Watertown, CT
- Average wind speed in January: 8.3mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in January
Watertown, CT
- Average humidity in January: 77%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).
Average rainfall in January
Watertown, CT
- Average rainfall in January: 2.36"
The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in January
Watertown, CT
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in January
Watertown, CT
- Average snowfall in January: 4.13"
The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Watertown, CT
- Average snowfall days in January: 7.7 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Watertown, 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 12min).
- Average sunshine in January: 4h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in January
Watertown, CT
- Average sunshine days in January: 18.1 days
The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in January
Watertown, 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
Watertown, CT
- Average cloud cover in January: 47
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in January
Watertown, CT
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
Watertown, Connecticut, USA
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