| 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 | 1.0 |
| 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 | 4.1 |
| 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 | 2.3 |
| 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 | 34.9 |
|
More Lethbridge Weather Records
1938–2024
|
||
|---|---|---|
| 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 |
| Greatest difference in daily high 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 |
| Most yearly days with precipitation | 178 | 2008 |
| Earliest freeze | August 11 | 2007 |
| Earliest day ≥ 20 °C | February 27 | 1992 |
| Earliest day ≥ 25 °C | March 30 | 2004 |
| Earliest day ≥ 30 °C | April 28 | 1987 |
| Earliest day ≥ 35 °C | June 4 | 1970 |
| Latest freeze | June 16 | 1994 |
| Latest day ≥ 20 °C | November 12 | 1999 |
| Latest day ≥ 25 °C | October 28 | 2008 |
| Latest day ≥ 30 °C | October 11 | 1991 |
| Latest day ≥ 35 °C | September 24 | 2001 |
| Most days in a year < 0 °C | 206 | 2009 |
| Most days in a year ≥ 20 °C | 134 | 1963 |
| Most days in a year ≥ 25 °C | 88 | 2023 |
| Most days in a year ≥ 30 °C | 38 | 2021 |
| Most days in a year ≥ 35 °C | 9 | 2021 |
| Most days in a year ≥ 40 °C | 1 | 2018 |
|
Lethbridge Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 15 days | May 3–17, 2010 |
| Without precipitation | 54 days | Jan 21 – Mar 15, 1998 |
| Freezing temperatures High temperature ≤ 0 °C |
32 days | Feb 3 – Mar 6, 2019 |
| High temperature ≥ 20 °C | 81 days | Jun 24 – Sep 12, 2017 |
| High temperature ≥ 25 °C | 30 days | Jul 10 – Aug 8, 2007 |
| High temperature ≥ 30 °C | 13 days | Jun 30 – Jul 12, 1985 |
| High temperature ≥ 35 °C | 5 days | Jun 28 – Jul 2, 2021 |