| Month | Average (°C) | Record (°C) | Average (cm) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | -5.4 | -14.7 | 15.0 | -41.0 | 7.7 | 41.5 |
| February | -3.8 | -13.6 | 15.6 | -38.5 | 5.7 | 39.8 |
| March | 2.2 | -7.1 | 26.1 | -37.8 | 6.4 | 28.7 |
| April | 11.0 | 0.8 | 31.0 | -16.1 | 8.4 | 8.4 |
| May | 19.6 | 7.7 | 35.5 | -5.6 | 9.4 | 0.0 |
| June | 24.3 | 13.2 | 35.0 | -1.1 | 9.9 | 0.0 |
| July | 26.2 | 15.3 | 36.1 | 3.9 | 11.4 | 0.0 |
| August | 25.4 | 14.3 | 35.6 | 2.8 | 10.6 | 0.0 |
| September | 21.1 | 9.9 | 34.0 | -4.5 | 8.9 | 0.0 |
| October | 13.2 | 4.1 | 29.6 | -11.1 | 10.6 | 0.7 |
| November | 5.8 | -1.8 | 23.9 | -25.0 | 7.9 | 9.9 |
| December | -0.9 | -8.7 | 17.1 | -35.0 | 9.0 | 41.7 |
| Entire year | 11.6 | 1.6 | 36.1 | -41.0 | 104.1 | 172.6 |
|
More Saint-Hyacinthe Weather Records
1890–2024
|
||
|---|---|---|
| Highest daily low | 25.6 °C | May 29, 1978 |
| Lowest daily high | -28.9 °C | February 15, 1943 |
| Greatest daily range (Difference of high and low) |
41.0 °C | January 27, 1994 |
| Greatest difference in daily high over two conscutive days |
26.1 °C | Jan 19–20, 1975 |
| Most daily precipitation | 12.6 cm | August 28, 2011 |
| Most monthly precipitation | 26.3 cm | July 2004 |
| Most yearly precipitation | 139.6 cm | 1983 |
| Most yearly days with precipitation | 192 | 1936 |
| Earliest snow in season | September 25 | 1939 |
| Latest snow in season | May 20 | 1936 |
| Most daily snow | 67.0 cm | March 14, 2017 |
| Most monthly snow | 157.3 cm | February 1893 |
| Most yearly snow | 362.7 cm | 1936 |
| Most snow in a winter | 368.5 cm | 1892–1893 |
| Greatest snow accumulation | 102.0 cm | March 12, 1963 |
| Earliest freeze | September 13 | 1941 |
| Earliest day ≥ 20 °C | March 18 | 2012 |
| Earliest day ≥ 25 °C | March 21 | 2012 |
| Earliest day ≥ 30 °C | April 27 | 2009 |
| Latest freeze | June 3 | 1945 |
| Latest day ≥ 20 °C | November 22 | 1953 |
| Latest day ≥ 25 °C | October 26 | 2022 |
| Latest day ≥ 30 °C | September 25 | 1961 |
| Most days in a year < 0 °C | 182 | 1944 |
| Most days in a year ≥ 20 °C | 144 | 2021 |
| Most days in a year ≥ 25 °C | 89 | 1959 |
| Most days in a year ≥ 30 °C | 32 | 1955 |
| Most days in a year ≥ 35 °C | 3 | 1955 |
|
Saint-Hyacinthe Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 16 days | Feb 13–28, 1935 |
| Without precipitation | 20 days | Jul 18 – Aug 6, 2001 |
| With snow | 13 days | Feb 16–28, 1935 |
| Freezing temperatures High temperature ≤ 0 °C |
57 days | Dec 16, 1976 – Feb 10, 1977 |
| High temperature ≥ 20 °C | 85 days | Jul 4 – Sep 26, 2021 |
| High temperature ≥ 25 °C | 30 days | Jun 21 – Jul 20, 1975 |
| High temperature ≥ 30 °C | 8 days | Jul 23–30, 1970 |