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Donora September Weather

Averages and records for weather in Donora, Pennsylvania in the month of September.

Typical Donora September Weather 1991–2020
Average daily high	77.6 °F
Average daily low	54.8 °F
Average monthly precipitation	3.3 inches
Average monthly snow	none
Daily chance of precipitation	32.4%
Daily chance of snow	0%

Donora September Weather Records 1926–2024
Highest temperature	103 °F	September 4, 1953
Lowest temperature	31 °F	September 29, 1942
Highest daily low	78 °F	September 9, 1933
Lowest daily high	49 °F	September 30, 1967
Hottest average high temperature	85.3 °F	1959
Coldest average high temperature	70.5 °F	1928
Most daily precipitation	4.4 inches	September 18, 2004
Most monthly precipitation	8.1 inches	1945
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	82.0	59.3	101	44
September 2	81.7	59.0	99	44
September 3	81.5	58.8	101	44
September 4	81.2	58.5	103	44
September 5	81.0	58.3	95	46
September 6	80.8	58.0	97	42
September 7	80.6	57.8	97	43
September 8	80.4	57.6	99	42
September 9	80.1	57.2	94	41
September 10	79.7	56.8	96	40
September 11	79.4	56.4	96	38
September 12	79.1	56.0	97	43
September 13	78.7	55.7	97	41
September 14	78.4	55.5	96	35
September 15	78.1	55.1	94	38
September 16	77.6	54.7	96	40
September 17	77.2	54.4	95	33
September 18	76.8	53.9	94	38
September 19	76.4	53.5	95	36
September 20	76.1	53.3	93	39
September 21	75.7	53.0	93	35
September 22	75.3	52.6	92	37
September 23	74.9	52.1	92	36
September 24	74.5	51.6	92	33
September 25	74.2	51.2	90	36
September 26	73.9	50.9	91	35
September 27	73.6	50.6	89	34
September 28	73.2	50.2	90	34
September 29	72.8	49.8	91	31
September 30	72.5	49.4	94	34

Weather Station Details

Years	Station	Coordinates
1926–2024	Donora 1 SW	location