The highest day temperature in January 2026 was 48°F. The lowest night temperature was -8°F. The average values for day and night temperatures during January were 30.1°F и 20.3°F respectivly.

The average sea surface temperature in January 2026 for Old Saybrook was 37.2°F. The maximum and minimum values were 33.4°F and 39.8°F respectively.

You can expect various weather conditions during January. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in January for Old Saybrook is 1.0 in. It makes january one of the least rainy months of the year.

The average wind speed in January is 10.8 mph. It makes January the most windy month of the year for Old Saybrook.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Old Saybrook in January is 5.3 hours.