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
South Lyme's January weather reaches an average high of 35.4°F (1.9°C) and an average low of 25.7°F (-3.5°C), making it the coldest month.Humidity
In South Lyme, Connecticut, the average relative humidity in January is 75%.Rainfall
In January, in South Lyme, the rain falls for 6.8 days. Throughout January, 0.55" (14mm) of precipitation is accumulated. In South Lyme, during the entire year, the rain falls for 110.7 days and collects up to 8.58" (218mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In South Lyme, in January, during 5.4 snowfall days, 0.47" (12mm) of snow is typically accumulated. In South Lyme, during the entire year, snow falls for 18.4 days and aggregates up to 1.69" (43mm) of snow.Daylight
In South Lyme, the average length of the day in January is 9h and 36min.On the first day of January, sunrise is at 7:14 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 5:03 pm EST.
Sunshine
In South Lyme, the average sunshine in January is 5.2h.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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 2 during January, leads to the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Watch out! The Sun's UV radiation can be nearly magnified twofold 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 many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does South Lyme have in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
South Lyme, CT
- Average high temperature in January: 35.4°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in January: 25.7°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in January
South Lyme, CT
- Average pressure in January: 30.03"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
South Lyme, CT
- Average wind speed in January: 11.1mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in January
South Lyme, CT
- Average humidity in January: 75%
The months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in January
South Lyme, CT
- Average rainfall in January: 0.55"
The wettest month (with the highest rainfall) is December (0.94").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in January
South Lyme, CT
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is July (11.5 days).
The months with the least rainy days are February and November (6.6 days).
Average snowfall in January
South Lyme, CT
- Average snowfall in January: 0.47"
The month with the highest snowfall is March (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
South Lyme, CT
- Average snowfall days in January: 5.4 days
The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
South Lyme, 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 months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in January
South Lyme, CT
- Average sunshine days in January: 19.3 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is July (15.8 days).
Average UV index in January
South Lyme, 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
South Lyme, 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 28).
Average visibility in January
South Lyme, 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).
South Lyme, Connecticut, USA
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