Monthly Historical AveragesOld Lyme, CT
Average Temperature
High
13°
Feels 12
Low
5°
Feels 3
Average Precipitation
10 Days
89.3mm
1.5cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, April 12, 2026
Day
11°Feels 9
Wind
17 km/h SE
Gust
28 km/h
Humidity
40%
P.O.P
20%
Night
7°Feels 4
Wind
21 km/h S
Gust
32 km/h
Humidity
87%
P.O.P
40%
Rain
~1 mm
Historical AveragesApr 12
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity