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
Old Saybrook's January weather, marked by an average high temperature of 35.2°F (1.8°C) and an average low temperature of 25.5°F (-3.6°C), is the coldest in the year.Humidity
The average relative humidity in January is 74%.Rainfall
In Old Saybrook, during January, the rain falls for 9 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 166.2 rainfall days, and 34.8" (884mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In Old Saybrook, during January, snow falls for 6.3 days and regularly aggregates up to 2.17" (55mm) of snow. In Old Saybrook, during the entire year, snow falls for 24.2 days and aggregates up to 9.53" (242mm) of snow.Ocean temperature
In January, the average ocean temperature is 41.9°F (5.5°C).Note: Swimming in 41.9°F (5.5°C) can be lethal. Merely spending a few minutes in 55.4°F (13°C) waters feels harsh, and venturing below 50°F (10°C) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
In Old Saybrook, the average length of the day in January is 9h and 36min.On the first day of the month, sunrise is at 7:15 am and sunset at 4:30 pm. On the last day of January, sunrise is at 7:01 am and sunset at 5:04 pm EST.
Sunshine
In Old Saybrook, the average sunshine in January is 5.1h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In January, the UV index of 2 transforms into the following advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month 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 water temperature in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
What are the months with the lowest UV index?
What is the UV index reading in January in Old Saybrook?
Average temperature in January
Old Saybrook, CT
- Average high temperature in January: 35.2°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in January: 25.5°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure in January
Old Saybrook, 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
Old Saybrook, CT
- Average wind speed in January: 10.9mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in January
Old Saybrook, CT
- Average humidity in January: 74%
The months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is April (73%).
Average rainfall in January
Old Saybrook, CT
- Average rainfall in January: 2.52"
The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in January
Old Saybrook, CT
- Average rainfall days in January: 9 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9 days).
Average snowfall in January
Old Saybrook, CT
- Average snowfall in January: 2.17"
The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Old Saybrook, CT
- Average snowfall days in January: 6.3 days
The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in January
Old Saybrook, CT
- Average sea temperature in January: 41.9°F
The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight in January /
Average sunshine in January
Old Saybrook, 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 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
Old Saybrook, CT
- Average sunshine days in January: 16 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is July (11.7 days).
Average UV index in January
Old Saybrook, 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
Old Saybrook, CT
- Average cloud cover in January: 45
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
Old Saybrook, 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).
Old Saybrook, Connecticut, USA
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