St. John's Weather Records

St. John's, Newfoundland and Labrador weather averages and records from 1874–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in St. John's, Newfoundland and Labrador was 33.9 °C which occurred on August 14, 1876.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in St. John's, Newfoundland and Labrador was -29.4 °C which occurred on February 16, 1875.
Lowest Temperatures: All-Time By Year
St. John's Weather by Month
Averages based on the years 1991–2020
Month Average (°C) Record (°C) Average (cm)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January -0.4 -7.5 15.7 -28.3 15.3 91.6
February -0.9 -8.2 16.0 -29.4 11.7 76.4
March 1.1 -5.9 19.4 -25.6 13.5 62.2
April 5.3 -2.1 24.1 -18.3 11.9 31.5
May 10.9 1.6 27.6 -6.7 10.0 4.8
June 15.8 6.0 30.6 -3.3 8.9 0.0
July 20.9 11.2 32.2 -1.1 10.0 0.0
August 20.9 12.1 33.9 0.0 10.2 0.0
September 17.0 8.5 29.5 -1.7 12.8 0.0
October 11.3 4.3 30.6 -5.6 15.2 1.9
November 6.8 0.1 19.4 -14.4 15.6 20.8
December 2.0 -4.2 17.9 -20.0 17.2 70.7
Entire year 9.3 1.4 33.9 -29.4 152.3 355.5
More St. John's Weather Records
1874–2024
Highest daily low 21.5 °C July 25, 2013
Lowest daily high -24.4 °C February 10, 1883
Greatest daily range
(Difference of high and low)
29.4 °C February 1, 1898
Greatest difference in daily high
over two conscutive days
21.7 °C Dec 31, 1972 – Jan 1, 1973
Most daily precipitation 17.3 cm August 29, 1876
Most monthly precipitation 35.7 cm December 1909
Most yearly precipitation 206.8 cm 1955
Most yearly days with precipitation 245 1955
Earliest snow in season September 26 2015
Latest snow in season June 13 1976
Most daily snow 101.6 cm February 13, 1894
Most monthly snow 276.7 cm February 1894
Most yearly snow 598.9 cm 1955
Most snow in a winter 648.4 cm 2000–2001
Greatest snow accumulation 180.0 cm February 10, 2001
Earliest freeze September 14 1978
Earliest day ≥ 20 °C April 21 1889
Earliest day ≥ 25 °C May 13 1912
Latest freeze July 6 1976
Latest day ≥ 20 °C October 30 2003
Latest day ≥ 25 °C October 3 1932
Most days in a year < 0 °C 197 1985
Most days in a year ≥ 20 °C 89 1883
Most days in a year ≥ 25 °C 40 1883
Most days in a year ≥ 30 °C 3 1876
St. John's Weather Streaks
Most consecutive days...
With precipitation 31 days Nov 1 – Dec 1, 1910
Without precipitation 21 days May 22 – Jun 11, 1920
With snow 17 days Feb 27 – Mar 15, 1961
Freezing temperatures
High temperature ≤ 0 °C
31 days Feb 1 – Mar 3, 1923
High temperature ≥ 20 °C 32 days Jul 15 – Aug 15, 1920
High temperature ≥ 25 °C 15 days Jul 30 – Aug 13, 1883
Plant Hardiness Zone
7A
St. John's is in plant hardiness zone 7A
based on average yearly minimum temperature from 1991–2020
St. John's Weather by Year
More St. John's Weather
Compare St. John's to:
Weather Station Details
Years Station Coordinates
2012–2024 St. John's International Airport location
1942–2012 St. John's A location
1874–1941 St. John's location