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Saint John Weather Records

Saint John, New Brunswick Weather averages and records from 1871–2022 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Saint John, New Brunswick was 34.4 °C which occurred on August 22, 1976.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Saint John, New Brunswick was -36.7 °C which occurred on February 11, 1948.
Lowest Temperatures: All-Time By Year
Saint John Weather by Month
Averages based on the years 1991–2020
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
☀️ Average high (°C) -2.4 -1.4 2.6 8.8 15.3 20.1 23.1 23.0 19.0 12.9 6.9 1.1 10.9
🌙 Average low (°C) -13.1 -12.5 -7.6 -1.6 3.5 8.2 11.5 11.2 7.5 2.7 -2.0 -8.5 0.0
☀️ Record high (°C) 14.8 14.5 25.4 23.9 33.0 32.0 33.7 34.4 33.9 28.9 21.7 16.4 34.4
🌙 Record low (°C) -33.2 -36.7 -30.0 -17.8 -7.8 -2.2 1.1 -0.6 -6.7 -10.6 -22.8 -34.4 -36.7
💧 Average precipitation (cm) 12.1 10.3 10.8 9.9 9.7 9.6 8.6 7.8 11.0 13.1 13.4 13.3 129.9
❄️ Average snow (cm) 61.3 54.4 40.0 13.9 0.8 0.0 0.0 0.0 0.0 0.7 12.4 42.5 220.8
More Saint John Weather Records
1871–2022
Highest daily low 20.6 °C July 7, 1908
Lowest daily high -24.4 °C December 29, 1933
Greatest daily range
(Difference of high and low)
35.6 °C February 11, 1948
Difference in high temperature
over two conscutive days
26.0 °C Jan 16–17, 1994
Most daily precipitation 15.4 cm November 13, 1975
Most monthly precipitation 30.7 cm December 1964
Most yearly precipitation 197.5 cm 1979
Earliest freeze August 28 1947
Latest freeze June 12 2018
Earliest snow in season October 8 1988
Latest snow in season May 27 1915
Most daily snow 58.4 cm March 30, 1878
Most monthly snow 184.4 cm February 2015
Most yearly snow 493.4 cm 2015
Saint John Weather Streaks
Most consecutive days...
With precipitation 16 days Apr 13–28, 2019
Without precipitation 24 days Aug 22 – Sep 14, 1889
With snow 12 days Feb 5–16, 2017
Saint John Weather by Year
More
Weather Station Details
Years Station Coordinates
2012–2022 Saint John location
1947–2012 Saint John A location
1871–1946 Saint John location