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St. Johnsbury September Weather

Averages and records for weather in St. Johnsbury, Vermont in the month of September.

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
Daily chance of precipitation	37.6%
Daily chance of snow	0%

St. Johnsbury September Weather Records 1894–2024
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 high temperature	81.5 °F	1961
Coldest average high temperature	65.7 °F	1896
Most daily precipitation	4.5 inches	September 17, 1999
Most monthly precipitation	8.6 inches	1907
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	76.5	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	90	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

Weather Station Details

Years	Station	Coordinates
1894–2024	St. Johnsbury	location