Weather on December 18 in Montreal
Historical weather data for December 18 in Montreal, Canada
Based on 51 years of data from MONTREAL MCGILL
About This Date
December 18th in Montreal, Canada typically brings very cold winter weather, with average highs around -3°C and lows near -9°C. Over 51 years of records, the warmest December 18th was in 2023 (7°C average), while the coldest was 1979 (-18°C) — a 45°F range across recorded history. Precipitation has occurred on 43% of recorded December 18th dates, with snow falling 16% of the time (heaviest snowfall: 3.2"). The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
Planning for December 18th in Montreal? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 6°C (42°F) | -5°C (23°F) | -- |
| 2023 | 8°C (47°F) | 5°C (41°F) | 6.14" |
| 2022 | 0°C (32°F) | -3°C (26°F) | 0.36" |
| 2021 | -1°C (31°F) | -7°C (20°F) | 0.69" |
| 2020 | -6°C (22°F) | -12°C (10°F) | 0" |
| 2019 | -2°C (28°F) | -18°C (0°F) | 0.3" |
| 2018 | -4°C (24°F) | -9°C (16°F) | 0" |
| 2017 | -9°C (15°F) | -14°C (7°F) | 0.29" |
| 2016 | -3°C (26°F) | -17°C (2°F) | 0.4" |
| 2015 | 8°C (46°F) | 2°C (35°F) | 0" |
| 2014 | 1°C (34°F) | -2°C (28°F) | -- |
| 2013 | -7°C (20°F) | -14°C (6°F) | 0.1" |
| 2012 | 2°C (35°F) | 0°C (32°F) | 2.54" |
| 2011 | -6°C (22°F) | -11°C (12°F) | 0" |
| 2010 | -1°C (30°F) | -7°C (20°F) | 0.12" |
| 2009 | -11°C (13°F) | -17°C (1°F) | 0" |
| 2008 | -2°C (29°F) | -7°C (20°F) | 0.1" |
| 2007 | -11°C (13°F) | -15°C (5°F) | 0.12" |
| 2006 | 6°C (42°F) | -1°C (30°F) | 0" |
| 2005 | -1°C (30°F) | -4°C (25°F) | 0" |
| 2004 | 0°C (32°F) | -14°C (7°F) | 0" |
| 2003 | 0°C (32°F) | -8°C (17°F) | 0.98" |
| 2002 | -3°C (27°F) | -8°C (18°F) | 0" |
| 2001 | 2°C (35°F) | -3°C (27°F) | 0" |
| 2000 | 2°C (36°F) | -11°C (13°F) | 0" |
| 1999 | -6°C (21°F) | -11°C (13°F) | 0" |
| 1997 | 0°C (32°F) | -6°C (22°F) | 0" |
| 1996 | 6°C (42°F) | 2°C (35°F) | 0" |
| 1994 | 4°C (39°F) | -1°C (31°F) | 0.13" |
| 1992 | 2°C (36°F) | -7°C (20°F) | 0.02" |
| 1991 | -12°C (10°F) | -15°C (5°F) | 0" |
| 1990 | 4°C (39°F) | -3°C (26°F) | 1.5" |
| 1989 | -10°C (14°F) | -16°C (4°F) | 0" |
| 1988 | -9°C (15°F) | -19°C (-2°F) | 0" |
| 1987 | -4°C (24°F) | -9°C (15°F) | 0.2" |
| 1986 | 2°C (36°F) | -7°C (20°F) | 0.81" |
| 1985 | -9°C (16°F) | -19°C (-2°F) | 0.06" |
| 1984 | 2°C (36°F) | -2°C (29°F) | 0" |
| 1983 | -12°C (11°F) | -12°C (10°F) | 0.38" |
| 1982 | -7°C (19°F) | -14°C (7°F) | 0" |
| 1981 | -7°C (20°F) | -9°C (16°F) | 0" |
| 1980 | -1°C (30°F) | -19°C (-2°F) | 0.2" |
| 1979 | -17°C (2°F) | -20°C (-4°F) | 0" |
| 1978 | -12°C (10°F) | -14°C (6°F) | 0" |
| 1977 | 1°C (33°F) | -11°C (13°F) | 0" |
| 1976 | -9°C (16°F) | -11°C (13°F) | 0" |
| 1975 | -6°C (21°F) | -15°C (5°F) | 0" |
| 1974 | 0°C (32°F) | -3°C (26°F) | 0.05" |
| 1973 | -14°C (7°F) | -17°C (1°F) | 0" |
| 1972 | -2°C (28°F) | -17°C (1°F) | 0.05" |
| 1971 | -9°C (16°F) | -13°C (9°F) | 0" |