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Waterville September Weather

Averages and records for weather in Waterville, Maine in the month of September.

Typical Waterville September Weather 1991–2020
Average daily high	71.9 °F
Average daily low	49.3 °F
Average monthly precipitation	3.8 inches
Average monthly snow	none
Daily chance of precipitation	33.9%
Daily chance of snow	0%

Waterville September Weather Records 1895–2024
Highest temperature	96 °F	September 10, 2002
Lowest temperature	23 °F	September 29, 1980
Highest daily low	71 °F	September 8, 1999
Lowest daily high	46 °F	September 21, 1904
Hottest average high temperature	80.9 °F	1961
Coldest average high temperature	63.2 °F	1904
Most daily precipitation	6.5 inches	September 12, 1954
Most monthly precipitation	12.0 inches	1954
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	76.7	53.5	94	33
September 2	76.4	53.2	94	38
September 3	76.1	53.0	95	34
September 4	75.8	52.7	95	36
September 5	75.5	52.4	91	33
September 6	75.2	52.0	90	38
September 7	74.9	51.7	94	34
September 8	74.7	51.5	95	32
September 9	74.4	51.3	94	32
September 10	74.0	51.0	96	35
September 11	73.5	50.6	95	31
September 12	73.1	50.3	93	34
September 13	72.7	49.9	89	31
September 14	72.5	49.7	90	27
September 15	72.2	49.4	91	27
September 16	71.8	49.1	92	29
September 17	71.3	48.8	92	31
September 18	71.0	48.5	86	31
September 19	70.6	48.1	89	26
September 20	70.1	47.7	89	29
September 21	69.7	47.4	91	29
September 22	69.3	47.0	92	30
September 23	68.8	46.5	91	23
September 24	68.4	46.1	87	25
September 25	68.0	45.6	88	27
September 26	67.6	45.4	89	28
September 27	67.3	45.1	91	26
September 28	66.8	44.7	86	26
September 29	66.4	44.3	84	23
September 30	65.9	43.9	82	27

Weather Station Details

Years	Station	Coordinates
1958–2024	Waterville Treatment Plant	location
1895–1958	Waterville WWTP	location