St. Johnsbury September Weather

Typical St. Johnsbury September Weather 1991–2020
Average daily high	72.1 °F
Average daily low	49.3 °F
Average monthly precipitation	3.4 inches
Average monthly snow	none

St. Johnsbury September Weather Records 1894–2023
Highest temperature	95 °F	September 16, 1939
Lowest temperature	22 °F	September 28, 1947
Highest daily low	72 °F	September 8, 2007
Lowest daily high	45 °F	September 27, 1939
Hottest average temperature	7.5 °F above average	1961
Coldest average temperature	-6.2 °F below average	1950
Most daily precipitation	4.5 inches	September 17, 1999
Most monthly precipitation	8.6 inches	1907
Most daily snow	none	-
Most monthly snow	none	-

Day	Average (°F)		Record (°F)
	High	Low	High	Low
September 1	76.5	53.3	92	34
September 2	76.2	53.0	92	36
September 3	76.0	52.8	91	34
September 4	75.7	52.6	91	34
September 5	75.4	52.2	90	33
September 6	75.2	51.8	89	33
September 7	75.0	51.6	92	33
September 8	74.8	51.5	92	33
September 9	74.5	51.2	92	31
September 10	74.1	50.9	92	28
September 11	73.8	50.5	93	28
September 12	73.4	50.2	89	26
September 13	73.1	49.9	92	28
September 14	72.8	49.8	87	28
September 15	72.4	49.5	94	26
September 16	72.0	49.1	95	28
September 17	71.5	48.8	89	29
September 18	71.1	48.5	89	30
September 19	70.6	48.1	87	28
September 20	70.2	47.8	88	28
September 21	69.7	47.5	87	26
September 22	69.3	47.0	90	27
September 23	68.8	46.6	90	22
September 24	68.4	46.1	89	23
September 25	68.1	45.8	91	25
September 26	67.8	45.6	91	24
September 27	67.5	45.3	90	22
September 28	67.1	44.9	87	22
September 29	66.7	44.4	83	24
September 30	66.3	43.9	85	22