As of 09:06 EDT

Plymouth, CT weather in September

76°

Plymouth, Sunday, 9 August, 09:06

Clear. Feels like 78°. High 84°, low 69°.

Pressure29.94 inHg

Wind2 mph SW

Humidity86%

Visibility6.2 mi

Dew point71°

See detailed hourly forecast

In September, Plymouth, CT averages a high of 71.1° and a low of 55.3°. About 4.2 inches of precipitation fall over the month (9 wet days). The record high is 93.2° (2023) and the record low 35.1° (1963). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	75.6°	59.5°	27%	92.1° (2010)	48.4° (1975)
2	75.6°	58.6°	30%	93° (2010)	46.9° (1991)
3	75.4°	59°	38%	90° (2018)	46.4° (1967)
4	76.1°	59.5°	25%	91.2° (1973)	48.4° (1987)
5	75.2°	59.2°	27%	90.5° (2018)	46.8° (1989)
6	74.8°	58.6°	32%	92.7° (2018)	45.9° (1989)
7	74.7°	58.1°	32%	93.2° (2023)	44.2° (1984)
8	73.8°	57.7°	27%	92.8° (2015)	46.9° (1984)
9	73.2°	57.4°	32%	89.8° (2002)	43.7° (1990)
10	72.7°	57.4°	32%	88.7° (2002)	43.7° (1978)
11	72.9°	56.5°	23%	92.1° (1983)	45° (1967)
12	72.9°	56.1°	23%	89.6° (2005)	44.6° (1967)
13	72.9°	56.3°	28%	90.7° (2005)	42.4° (1985)
14	72°	57°	42%	86.7° (2005)	41.9° (1963)
15	70.2°	55.2°	38%	83.1° (1993)	41.7° (1963)
16	70°	54.5°	28%	86.2° (1991)	41.4° (1964)
17	70.7°	54°	32%	85.8° (1991)	41.2° (1986)
18	70°	54.7°	28%	80.8° (2015)	40.8° (1990)
19	70.2°	53.4°	33%	86.4° (1983)	40.1° (1990)
20	70°	53.4°	27%	87.8° (1983)	39.4° (1979)
21	69.8°	54°	28%	84.6° (1965)	38.8° (1962)
22	69.4°	54°	43%	87.6° (1970)	38.1° (1962)
23	68.5°	53.2°	37%	88.7° (1970)	39.9° (1963)
24	66.7°	51.8°	27%	90.5° (2017)	35.1° (1963)
25	67.5°	51.4°	23%	88.7° (2017)	36.5° (1963)
26	68°	52.9°	35%	88.2° (2007)	41.9° (1967)
27	68.5°	53.1°	27%	86° (2017)	39.9° (1966)
28	66.9°	52.7°	37%	83.1° (2014)	36.5° (1965)
29	65.1°	51.3°	27%	79.3° (2014)	35.4° (2000)
30	64.6°	49.5°	35%	84.2° (1986)	37.4° (1991)