Home

Old Mystic, CT Weather


Old Mystic, CT climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 20's.

The warmest month of the year is July with an average maximum temperature of 80.70 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 20.00 degrees Fahrenheit.

Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 18 degrees Fahrenheit, and fairly limited during winter with an average difference of 18 degrees Fahrenheit.

The annual average precipitation at Old Mystic is 48.72 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is November with an average rainfall of 4.51 Inches.

Weather Data

Current Conditions

(Updated: 3:56 AM EDT MON MAR 22 2010)

Overcast Overcast, 47°F Humidity: 90% Dewpoint: 44°F
Wind Speed: CALM Heat Index: 47°F
Barometer: 30.05 in. Wind Chill: 47°F

Weather Forecast

(Generated: 3:45 AM EDT MON MAR 22 2010)
Hi: 55°F Today: Patchy fog this morning. Light rain likely this morning... Then rain likely this afternoon. Highs in the mid 50s. Southeast winds 5 to 10 mph. Chance of rain 70 percent.
Lo: 45°F
Hi: 51°F Tuesday: Cloudy. Rain likely...Mainly in the morning. Highs in the lower 50s. South winds 5 to 10 mph...Becoming southwest in the afternoon. Chance of rain 70 percent.
Lo: 39°F
Hi: 51°F Wednesday: Mostly cloudy in the morning...Then becoming mostly sunny. Breezy with highs in the lower 50s. Northwest winds 15 to 20 mph with gusts up to 35 mph.
Lo: 35°F
Hi: 51°F Thursday: Sunny. Highs in the lower 50s.
Lo: 31°F
Hi: 45°F Friday: Partly sunny. Highs in the mid 40s. Temperature falling into the upper 30s in the afternoon.
Lo: 25°F
Hi: 41°F Saturday: Sunny. Highs in the lower 40s.
Lo: 29°F

Moon, Sunrise and Sunset

Waxing Gibbous Moon Moon Phase: Waxing Gibbous Moon Civil Twilight:
6:19 AM EDT
Sunrise:
6:47 AM EDT
Sunset:
7:02 PM EDT
Civil Twilight:
7:29 PM EDT

Normal Climate

Normal Temperatures

(GROTON Weather station, 4.53 miles from Old Mystic)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 37.7 39.4 47.1 56.3 66.3 74.9 80.7 79.6 72.7 62.5 52.7 42.7 59.4
Mean °F 28.9 30.6 38.2 47.2 57.0 65.8 71.8 70.9 63.6 53.0 44.0 34.2 50.4
Min °F 20.0 21.8 29.3 38.1 47.7 56.6 62.9 62.2 54.5 43.4 35.2 25.7 41.5

Normal Precipitation

(GROTON Weather station, 4.53 miles from Old Mystic)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 4.39 3.54 4.46 4.23 3.79 3.67 3.31 4.46 4.06 3.98 4.51 4.32 48.72