Monthly Historical AveragesOld Mystic, CT
Average Temperature
High
13°
Feels 12
Low
4°
Feels 2
Average Precipitation
9 Days
83.2mm
1.6cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, April 5, 2026
Day
12°Feels 10
Wind
28 km/h S
Gust
42 km/h
Humidity
88%
P.O.P
100%
Rain
~10 mm
Night
4°Feels 0
Wind
19 km/h NW
Gust
29 km/h
Humidity
100%
P.O.P
70%
Rain
1-3 mm
Historical AveragesApr 5
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity