Weather on September 25 in Montreal
Historical weather data for September 25 in Montreal, Canada
Based on 51 years of data from MONTREAL MCGILL
About This Date
September 25th in Montreal, Canada typically brings mild fall weather, with average highs around 18°C and lows near 11°C. Over 51 years of records, the warmest September 25th was in 2017 (27°C average), while the coldest was 1987 (8°C) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 31% of September 25th dates historically, with the wettest September 25th recording 5.31" of rain. The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
Planning for September 25th in Montreal? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 19°C (66°F) | 16°C (60°F) | -- |
| 2023 | 20°C (68°F) | 12°C (53°F) | 0" |
| 2022 | 18°C (64°F) | 12°C (54°F) | 0" |
| 2021 | 22°C (72°F) | 12°C (54°F) | 0" |
| 2020 | 16°C (61°F) | 9°C (48°F) | 0" |
| 2019 | 19°C (67°F) | 11°C (52°F) | 0.06" |
| 2018 | 16°C (61°F) | 11°C (51°F) | 0.75" |
| 2017 | 32°C (90°F) | 22°C (72°F) | 0" |
| 2016 | 17°C (62°F) | 7°C (44°F) | 0" |
| 2015 | 15°C (59°F) | 10°C (50°F) | 0" |
| 2014 | 24°C (75°F) | 13°C (55°F) | 0" |
| 2013 | 17°C (63°F) | 9°C (48°F) | 0" |
| 2012 | 19°C (67°F) | 11°C (52°F) | 0" |
| 2011 | 24°C (75°F) | 17°C (63°F) | 0" |
| 2010 | 22°C (71°F) | 11°C (52°F) | 0" |
| 2008 | 26°C (78°F) | 14°C (58°F) | 0" |
| 2007 | 29°C (84°F) | 16°C (61°F) | 0" |
| 2006 | 14°C (57°F) | 8°C (47°F) | 0.24" |
| 2005 | 18°C (64°F) | 11°C (51°F) | 0" |
| 2004 | 24°C (75°F) | 14°C (58°F) | 0" |
| 2003 | 17°C (62°F) | 10°C (50°F) | 0.62" |
| 2002 | 21°C (70°F) | 11°C (51°F) | 0" |
| 2001 | 21°C (70°F) | 13°C (55°F) | 1.67" |
| 2000 | 14°C (57°F) | 4°C (39°F) | -- |
| 1999 | 16°C (61°F) | 8°C (47°F) | 0" |
| 1998 | 22°C (71°F) | 13°C (55°F) | 0" |
| 1997 | 16°C (61°F) | 8°C (46°F) | 0" |
| 1996 | 13°C (56°F) | 9°C (48°F) | 0.1" |
| 1994 | 19°C (67°F) | 14°C (58°F) | 0" |
| 1992 | 19°C (66°F) | 7°C (44°F) | 0" |
| 1991 | 10°C (50°F) | 8°C (47°F) | 0.69" |
| 1990 | 18°C (65°F) | 10°C (50°F) | 0" |
| 1989 | 17°C (63°F) | 3°C (37°F) | 0" |
| 1988 | 19°C (67°F) | 8°C (47°F) | 0" |
| 1987 | 11°C (51°F) | 5°C (41°F) | 0.48" |
| 1986 | 18°C (64°F) | 11°C (52°F) | 0" |
| 1985 | 18°C (64°F) | 10°C (50°F) | 0" |
| 1984 | 24°C (76°F) | 16°C (60°F) | 0.12" |
| 1983 | 18°C (65°F) | 9°C (49°F) | 0.03" |
| 1982 | 20°C (68°F) | 14°C (58°F) | 0" |
| 1981 | 19°C (66°F) | 11°C (51°F) | 0" |
| 1980 | 17°C (62°F) | 7°C (45°F) | 1.24" |
| 1979 | 18°C (65°F) | 10°C (50°F) | 0" |
| 1978 | 13°C (56°F) | 10°C (50°F) | 0" |
| 1977 | 14°C (58°F) | 8°C (46°F) | 0.89" |
| 1976 | 12°C (54°F) | 7°C (44°F) | 0.43" |
| 1975 | 13°C (55°F) | 7°C (45°F) | 5.31" |
| 1974 | 12°C (54°F) | 7°C (44°F) | 1.19" |
| 1973 | 19°C (66°F) | 10°C (50°F) | 0" |
| 1972 | 23°C (73°F) | 14°C (57°F) | 0.48" |
| 1971 | 17°C (63°F) | 9°C (48°F) | 0" |