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Plymouth September Weather

Averages and records for weather in Plymouth, Indiana in the month of September.

Typical Plymouth September Weather 1991–2020
Average daily high	75.9 °F
Average daily low	52.9 °F
Average monthly precipitation	3.2 inches
Average monthly snow	none
Daily chance of precipitation	30.7%
Daily chance of snow	0%

Plymouth September Weather Records 1894–2024
Highest temperature	102 °F	September 14, 1939
Lowest temperature	24 °F	September 29, 1951
Highest daily low	74 °F	September 6, 1985
Lowest daily high	47 °F	September 29, 1967
Hottest average high temperature	83.7 °F	1939
Coldest average high temperature	67.7 °F	1918
Most daily precipitation	4.4 inches	September 14, 1938
Most monthly precipitation	9.3 inches	1972
Most daily snow	none	-
Most monthly snow	none	-

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
September 1	80.0	57.9	100	39
September 2	79.7	57.7	100	37
September 3	79.5	57.4	98	35
September 4	79.4	57.1	98	36
September 5	79.2	56.8	99	40
September 6	79.0	56.6	99	37
September 7	78.8	56.3	100	38
September 8	78.6	56.0	100	35
September 9	78.3	55.6	99	36
September 10	77.9	55.2	96	34
September 11	77.6	54.7	96	32
September 12	77.2	54.3	96	35
September 13	76.9	53.9	100	32
September 14	76.5	53.5	102	32
September 15	76.1	53.1	101	34
September 16	75.8	52.7	96	32
September 17	75.4	52.3	95	33
September 18	75.0	51.9	95	31
September 19	74.6	51.6	94	34
September 20	74.2	51.3	91	33
September 21	73.8	50.9	93	30
September 22	73.3	50.5	92	31
September 23	72.9	50.1	92	29
September 24	72.7	49.7	91	28
September 25	72.4	49.3	91	30
September 26	72.1	49.0	90	28
September 27	71.7	48.6	91	31
September 28	71.3	48.2	88	30
September 29	70.9	47.8	96	24
September 30	70.5	47.4	91	25

Weather Station Details

Years	Station	Coordinates
1989–2024	Plymouth	location
1894–1989	Plymouth Power Substation	location