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 Plymouth, the lowest temperatures are generally noted in January, averaging a high of 32.5°F (0.3°C) and a low of 20.7°F (-6.3°C).Humidity
In January, the average relative humidity is 77%.Rainfall
In Plymouth, in January, it is raining for 9.4 days, with typically 2.4" (61mm) of accumulated precipitation. In Plymouth, Connecticut, during the entire year, the rain falls for 170 days and collects up to 35.43" (900mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Plymouth, in January, during 8 snowfall days, 3.43" (87mm) of snow is typically accumulated. Throughout the year, there are 33.9 snowfall days, and 18.43" (468mm) of snow is accumulated.Daylight
The average length of the day in January 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, sunrise is at 7:05 am and sunset at 5:05 pm EST.
Sunshine
In Plymouth, the average sunshine in January 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 minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 2 during January leads to these instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
How many days does it snow in January?
What is the average length of the day in January in Plymouth?
When is the sunrise / sunset in January?
How many hours of sunshine does Plymouth have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Plymouth, CT
- Average high temperature in January: 32.5°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 (32.5°F).
- Average low temperature in January: 20.7°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 (20.7°F).
Average pressure in January
Plymouth, 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
Plymouth, CT
- Average wind speed in January: 8.4mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in January
Plymouth, 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
Plymouth, CT
- Average rainfall in January: 2.4"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in January
Plymouth, CT
- Average rainfall days in January: 9.4 days
The months with the highest number of rainy days are May and July (18.3 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in January
Plymouth, CT
- Average snowfall in January: 3.43"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Plymouth, CT
- Average snowfall days in January: 8 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Plymouth, CT
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
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 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in January
Plymouth, CT
- Average sunshine days in January: 16.7 days
The month with the most sunshine days is January (16.7 days).
The month with the least sunshine days is June (10 days).
Average UV index in January
Plymouth, 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
Plymouth, CT
- Average cloud cover in January: 46
The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in January
Plymouth, CT
- Average visibility in January: 6mi
The months with the highest visibility are January, April, October, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August and September (5mi).
Plymouth, Connecticut, USA
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