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Moncton September Weather

Averages and records for weather in Moncton, New Brunswick in the month of September.

Typical Moncton September Weather 1991–2020
Average daily high	20.6 °C
Average daily low	9.2 °C
Average monthly precipitation	10.5 cm
Average monthly snow	none
Daily chance of precipitation	39.2%
Daily chance of snow	0%

Moncton September Weather Records 1881–2024
Highest temperature	35.0 °C	September 1, 2010
Lowest temperature	-6.1 °C	September 29, 1947
Highest daily low	22.0 °C	September 23, 1989
Lowest daily high	5.0 °C	September 29, 1914
Hottest average high temperature	23.8 °C	1999
Coldest average high temperature	16.4 °C	1911
Most daily precipitation	12.1 cm	September 7, 2019
Most monthly precipitation	23.9 cm	1999
Most daily snow	none	-
Most monthly snow	none	-

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

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
September 1	23.1	11.5	35.0	-1.7
September 2	22.9	11.4	33.3	0.0
September 3	22.8	11.2	33.0	0.0
September 4	22.6	11.1	30.6	0.0
September 5	22.5	10.9	30.5	0.0
September 6	22.3	10.7	31.0	-2.2
September 7	22.1	10.5	32.8	0.0
September 8	22.0	10.4	32.0	-1.1
September 9	21.8	10.3	33.5	-3.3
September 10	21.6	10.1	32.5	-1.7
September 11	21.4	9.9	31.7	-0.6
September 12	21.2	9.7	31.7	-2.8
September 13	21.1	9.6	30.0	-2.8
September 14	20.9	9.5	30.0	-2.5
September 15	20.7	9.3	30.0	-3.0
September 16	20.5	9.1	30.6	-2.2
September 17	20.4	8.9	29.4	-1.1
September 18	20.2	8.8	30.6	-4.4
September 19	20.0	8.6	30.0	-2.2
September 20	19.8	8.3	31.5	-3.3
September 21	19.5	8.2	29.5	-2.2
September 22	19.2	7.9	32.8	-3.3
September 23	19.0	7.7	32.2	-3.9
September 24	18.8	7.5	30.0	-5.0
September 25	18.6	7.3	27.0	-4.4
September 26	18.4	7.1	31.1	-3.9
September 27	18.2	7.0	27.2	-2.8
September 28	18.0	6.8	28.0	-3.9
September 29	17.7	6.6	28.3	-6.1
September 30	17.5	6.4	25.5	-5.6

Weather Station Details

Years	Station	Coordinates
2013–2024	Moncton International Airport	location
1881–2012	Moncton	location