Lethbridge Weather Records

Lethbridge, Alberta weather averages and records from 1938–2022 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Lethbridge, Alberta was 40.5 °C which occurred on August 10, 2018.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Lethbridge, Alberta was -42.8 °C which occurred on January 23, 1969.
Lowest Temperatures: All-Time By Year
Lethbridge Weather by Month
Averages based on the years 1991–2020
Month Average (°C) Record (°C) Average (cm)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January -0.4 -12.6 19.2 -42.8 1.0
February 1.7 -11.1 21.8 -42.2 0.9
March 6.2 -7.2 26.8 -38.6 1.4
April 12.5 -1.7 31.1 -25.6 2.8
May 17.9 3.4 34.2 -11.7 5.7
June 21.5 7.8 38.3 -2.8 8.8
July 26.0 9.8 39.4 0.9 4.5
August 26.2 9.0 40.5 -1.0 3.3
September 20.8 4.8 36.7 -9.4 3.6
October 13.2 -0.9 31.7 -26.7 2.4
November 5.5 -6.7 24.0 -34.7 1.3
December 0.5 -11.5 18.3 -42.8 0.9
Entire year 12.7 -1.4 40.5 -42.8 38.2
More Lethbridge Weather Records
1938–2022
Highest daily low 22.2 °C July 31, 1960
Lowest daily high -32.2 °C January 29, 1969
Greatest daily range
(Difference of high and low)
41.3 °C January 6, 1996
Difference in high temperature
over two conscutive days
35.2 °C Jan 30–31, 1989
Most daily precipitation 8.5 cm May 23, 1980
Most monthly precipitation 27.2 cm June 2005
Most yearly precipitation 75.5 cm 1978
Earliest freeze August 11 2007
Latest freeze June 16 1994
Lethbridge Weather Streaks
Most consecutive days...
With precipitation 15 days May 3–17, 2010
Without precipitation 54 days Jan 21 – Mar 15, 1998
Lethbridge Weather by Year
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Weather Station Details
Years Station Coordinates
2011–2022 Lethbridge location
2006–2011 Lethbridge AWOS A location
1938–2005 Lethbridge A location