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Fredericton September Weather

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

Typical Fredericton September Weather 1991–2020
Average daily high	20.6 °C
Average daily low	8.9 °C
Average monthly precipitation	9.2 cm
Daily chance of precipitation	39.1%

Fredericton September Weather Records 1871–2024
Highest temperature	33.7 °C	September 1, 2010
Lowest temperature	-4.4 °C	September 28, 1922
Highest daily low	22.2 °C	September 3, 1921
Lowest daily high	6.1 °C	September 30, 1883
Hottest average high temperature	23.8 °C	1999
Coldest average high temperature	16.7 °C	1893
Most daily precipitation	13.7 cm	September 30, 2015
Most monthly precipitation	27.9 cm	1909

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	23.2	11.3	33.7	1.1
September 2	23.0	11.2	33.3	2.2
September 3	22.9	11.0	33.5	1.1
September 4	22.7	10.9	30.6	1.1
September 5	22.6	10.7	31.7	1.1
September 6	22.4	10.4	31.5	1.7
September 7	22.2	10.3	32.8	-0.6
September 8	22.1	10.1	31.9	0.0
September 9	21.8	10.0	33.5	-1.1
September 10	21.6	9.8	31.1	0.6
September 11	21.4	9.6	31.1	-0.6
September 12	21.2	9.4	31.1	-1.7
September 13	21.1	9.3	31.1	-0.6
September 14	20.9	9.2	29.4	-3.3
September 15	20.7	9.0	30.5	-2.2
September 16	20.5	8.8	33.3	-1.1
September 17	20.3	8.6	29.6	-1.1
September 18	20.1	8.5	30.0	0.0
September 19	19.8	8.3	30.0	-2.5
September 20	19.6	8.1	32.0	-1.1
September 21	19.3	7.9	31.1	-1.3
September 22	19.0	7.7	32.2	-3.9
September 23	18.8	7.4	31.7	-3.9
September 24	18.6	7.2	31.7	-3.9
September 25	18.4	7.0	29.7	-3.3
September 26	18.2	6.8	32.8	-2.8
September 27	18.0	6.7	27.2	-2.2
September 28	17.7	6.5	28.5	-4.4
September 29	17.5	6.3	27.5	-3.3
September 30	17.2	6.1	25.6	-3.9

Weather Station Details

Years	Station	Coordinates
2000–2024	Fredericton CDA CS	location
1914–2000	Fredericton CDA	location
1871–1913	Fredericton UNB	location