Weather on October 20 in Montreal
Historical weather data for October 20 in Montreal, Canada
Based on 52 years of data from MONTREAL MCGILL
About This Date
October 20th in Montreal, Canada typically brings cool fall weather, with average highs around 12°C and lows near 6°C. Over 52 years of records, the warmest October 20th was in 2025 (18°C average), while the coldest was 1974 (1°C) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 42% of October 20th dates historically, with the wettest October 20th recording 4.72" of rain. The last decade has been 5.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.8°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Montreal? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 21°C (69°F) | 15°C (59°F) | -- |
| 2023 | 18°C (65°F) | 13°C (55°F) | 0" |
| 2022 | 7°C (45°F) | 4°C (40°F) | 0.14" |
| 2021 | 18°C (64°F) | 8°C (46°F) | 0" |
| 2020 | 11°C (51°F) | 6°C (43°F) | 1.64" |
| 2019 | 12°C (53°F) | 3°C (37°F) | 0" |
| 2018 | 13°C (56°F) | 3°C (37°F) | 0" |
| 2017 | 17°C (63°F) | 9°C (48°F) | 0" |
| 2016 | 13°C (56°F) | 10°C (50°F) | 2.75" |
| 2015 | 17°C (63°F) | 7°C (45°F) | 0" |
| 2014 | 7°C (45°F) | 2°C (36°F) | -- |
| 2013 | 12°C (54°F) | 6°C (42°F) | 0.1" |
| 2012 | 19°C (66°F) | 8°C (46°F) | 0.95" |
| 2011 | 14°C (57°F) | 9°C (48°F) | 2.54" |
| 2010 | 13°C (55°F) | 4°C (40°F) | 0" |
| 2009 | 14°C (57°F) | 8°C (46°F) | 0" |
| 2008 | 11°C (52°F) | 6°C (42°F) | 0" |
| 2007 | 18°C (64°F) | 14°C (57°F) | 0" |
| 2006 | 9°C (48°F) | 1°C (34°F) | 2.63" |
| 2005 | 11°C (51°F) | 3°C (37°F) | 0" |
| 2004 | 11°C (52°F) | 1°C (34°F) | 0" |
| 2003 | 7°C (44°F) | 2°C (35°F) | 1.9" |
| 2002 | 6°C (42°F) | 1°C (33°F) | 0" |
| 2001 | 16°C (60°F) | 11°C (51°F) | -- |
| 2000 | 18°C (65°F) | 7°C (44°F) | 0" |
| 1999 | 11°C (52°F) | 3°C (37°F) | 0.24" |
| 1998 | 12°C (53°F) | 5°C (41°F) | 0.1" |
| 1997 | 13°C (55°F) | 4°C (39°F) | 0" |
| 1996 | 12°C (53°F) | 7°C (44°F) | 1.4" |
| 1994 | 15°C (59°F) | 12°C (54°F) | 1.23" |
| 1992 | 4°C (40°F) | 2°C (35°F) | 0.42" |
| 1991 | 6°C (43°F) | 2°C (35°F) | 0.12" |
| 1990 | 7°C (44°F) | -1°C (30°F) | 0" |
| 1989 | 10°C (50°F) | 1°C (34°F) | 3.96" |
| 1988 | 8°C (47°F) | 0°C (32°F) | 0" |
| 1987 | 14°C (58°F) | 11°C (51°F) | 0.7" |
| 1986 | 14°C (57°F) | 8°C (46°F) | 0.04" |
| 1985 | 12°C (54°F) | 4°C (40°F) | 0" |
| 1984 | 16°C (60°F) | 12°C (53°F) | 0" |
| 1983 | 7°C (45°F) | 1°C (33°F) | 0" |
| 1982 | 18°C (65°F) | 9°C (48°F) | 0.36" |
| 1981 | 13°C (55°F) | 1°C (33°F) | 0" |
| 1980 | 8°C (46°F) | 4°C (40°F) | 0" |
| 1979 | 17°C (62°F) | 12°C (54°F) | 0.51" |
| 1978 | 9°C (49°F) | 2°C (36°F) | 0" |
| 1977 | 13°C (55°F) | 7°C (45°F) | 0" |
| 1976 | 6°C (42°F) | 1°C (34°F) | 4.72" |
| 1975 | 12°C (53°F) | 8°C (46°F) | 0.56" |
| 1974 | 2°C (36°F) | -1°C (30°F) | 0" |
| 1973 | 8°C (47°F) | 7°C (45°F) | 0.13" |
| 1972 | 5°C (41°F) | -3°C (27°F) | 0" |
| 1971 | 18°C (64°F) | 5°C (41°F) | 0" |