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Weather & Climate in Sainte-Marthe, QC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sainte-Marthe has a cool climate with an average annual temperature of 42°F (6°C). Winters average 12°F in January while summers reach 69°F in July. The area gets 263 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 40.5 inches. The area receives 14.5 inches of snow annually. The city sits at an elevation of 213 feet.
Temperature
12°F Jan (-11°C)
69°F Jul (20°C)
| Annual Average | 42.2°F |
| 22% below US avg | |
| January Average | 12°F (-11°C) |
| July Average | 69°F (20°C) |
| Sunny Days | 263 days/yr |
Geography
| Elevation | 213 ft (65 m) |
| Area | 30.7 sq mi (79.6 km²) |
| Population Density | 33/sq mi |
| Coordinates | 45.4058°N, 74.2970°W |
| Timezone | America/Montreal |
Precipitation & Snow
Air Quality
Earthquake History
181 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| Jun 23, 2010 | 29 km NNE of Val-des-Monts, Canada | M5.4 | 106 km | 19 km |
| Apr 20, 2002 | 8 km NNW of Au Sable Forks, New York | M5.3 | 110 km | 5 km |
| Mar 14, 1996 | 7 km WNW of Saint-Adolphe-d'Howard, Canada | M4.5 | 66 km | 18 km |
| May 17, 1991 | 7 km WNW of Rigaud, Canada | M4.4 | 13 km | 18 km |
| Oct 31, 1999 | 7 km SW of Morin-Heights, Canada | M4.2 | 49 km | 18 km |
| May 24, 1997 | 6 km W of Saint-Adolphe-d'Howard, Canada | M4.2 | 64 km | 10 km |
| Apr 18, 1998 | 4 km N of Plantagenet, Canada | M4.1 | 57 km | 18 km |
| Nov 17, 1992 | 16 km ENE of Saint-André-Avellin, Canada | M4.0 | 59 km | 18 km |
| Aug 6, 2000 | 7 km SSW of La Minerve, Canada | M4.0 | 102 km | 18 km |
| Feb 25, 2006 | 4 km NE of Thurso, Canada | M4.0 | 75 km | 11 km |
| Oct 10, 2012 | 7 km ESE of Verchères, Canada | M3.9 | 89 km | 9 km |
| Oct 7, 1990 | 21 km WNW of La Minerve, Canada | M3.9 | 123 km | 18 km |
| Jul 30, 1993 | 1 km NE of Salaberry-de-Valleyfield, Canada | M3.9 | 21 km | 8 km |
| Mar 16, 2011 | 6 km ENE of Hawkesbury, Canada | M3.9 | 30 km | 10 km |
| Sep 18, 2011 | 1 km E of Thurso, Canada | M3.8 | 76 km | 5 km |
| Sep 23, 1993 | 11 km SE of La Conception, Canada | M3.8 | 77 km | 18 km |
| Nov 16, 1993 | 5 km SSE of Saint-Édouard, Canada | M3.8 | 68 km | 17 km |
| Oct 6, 2000 | 1 km WSW of Ormstown, Canada | M3.8 | 38 km | 18 km |
| Jul 5, 1991 | 7 km WSW of Sainte-Martine, Canada | M3.8 | 37 km | 18 km |
| Jul 30, 1998 | 0 km ENE of Lac-Simon, Canada | M3.8 | 90 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 15.0 m (49 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1908 | NOTRE DAME DE LA SALETTE | Meteorological | 15.0 m | 33 | 109 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
1 wildfire (100+ acres) recorded within 100 km. Largest: FLAT ROCK FIRE (658 acres, 2018).
| Year | Name | Acres Burned | Distance |
| 2018 | FLAT ROCK FIRE | 658 | 79 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 12°F (-11°C) | 2.9 in | Coldest |
| February | 15°F (-10°C) | 2.4 in | Driest |
| March | 26°F (-4°C) | 2.5 in | |
| April | 40°F (5°C) | 3.3 in | |
| May | 54°F (12°C) | 3.6 in | |
| June | 64°F (18°C) | 4.1 in | Wettest |
| July | 69°F (20°C) | 3.7 in | Warmest |
| August | 67°F (19°C) | 3.9 in | |
| September | 58°F (15°C) | 3.7 in | |
| October | 47°F (8°C) | 3.7 in | |
| November | 35°F (2°C) | 3.7 in | |
| December | 20°F (-7°C) | 3.0 in |
Sainte-Marthe has a seasonal temperature swing of 57°F / from 12°F in January to 69°F in July. Total annual precipitation is 40.5 inches, with June being the wettest month (4.1") and February the driest (2.4").