Weather on August 15 in Montreal
Historical weather data for August 15 in Montreal, Canada
Based on 51 years of data from MCTAVISH
About This Date
August 15th in Montreal, Canada typically brings pleasant summer weather, with average highs around 25°C and lows near 17°C. Over 51 years of records, the warmest August 15th was in 2002 (27°C average), while the coldest was 1994 (14°C) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 47% of August 15th dates historically, with the wettest August 15th recording 3.4" of rain. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for August 15th in Montreal? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 27°C (80°F) | 16°C (60°F) | -- |
| 2023 | 26°C (79°F) | 17°C (63°F) | 0 mm |
| 2022 | 28°C (82°F) | 16°C (60°F) | 0 mm |
| 2021 | 25°C (77°F) | 15°C (59°F) | 0 mm |
| 2020 | 28°C (83°F) | 17°C (62°F) | 0 mm |
| 2019 | 24°C (76°F) | 14°C (57°F) | 2 mm |
| 2018 | 28°C (83°F) | 21°C (70°F) | 1 mm |
| 2017 | 26°C (78°F) | 18°C (64°F) | 15 mm |
| 2016 | 27°C (81°F) | 18°C (64°F) | 0 mm |
| 2015 | 28°C (82°F) | 20°C (68°F) | 5 mm |
| 2014 | 17°C (63°F) | 12°C (54°F) | 7 mm |
| 2013 | 23°C (73°F) | 14°C (58°F) | 0 mm |
| 2012 | 26°C (79°F) | 18°C (65°F) | 6 mm |
| 2011 | 22°C (72°F) | 18°C (65°F) | 3 mm |
| 2010 | 26°C (78°F) | 19°C (67°F) | 29 mm |
| 2009 | 30°C (86°F) | 22°C (71°F) | 0 mm |
| 2008 | 26°C (78°F) | 15°C (59°F) | 7 mm |
| 2007 | 25°C (77°F) | 16°C (61°F) | 5 mm |
| 2006 | 24°C (76°F) | 18°C (64°F) | 3 mm |
| 2005 | 27°C (80°F) | 18°C (64°F) | 0 mm |
| 2004 | 24°C (76°F) | 14°C (58°F) | 0 mm |
| 2003 | 29°C (84°F) | 20°C (68°F) | 0 mm |
| 2002 | 29°C (85°F) | 23°C (74°F) | 0 mm |
| 2001 | 29°C (84°F) | 17°C (63°F) | 0 mm |
| 2000 | 27°C (81°F) | 19°C (66°F) | 86 mm |
| 1999 | 23°C (74°F) | 13°C (56°F) | 0 mm |
| 1998 | 28°C (82°F) | 19°C (67°F) | 16 mm |
| 1997 | 24°C (76°F) | 16°C (60°F) | 31 mm |
| 1994 | 17°C (63°F) | 12°C (53°F) | 0 mm |
| 1992 | 24°C (75°F) | 16°C (60°F) | 0 mm |
| 1991 | 29°C (84°F) | 21°C (70°F) | 0 mm |
| 1990 | 23°C (73°F) | 17°C (63°F) | 24 mm |
| 1989 | 29°C (84°F) | 20°C (68°F) | 8 mm |
| 1988 | 26°C (79°F) | 18°C (64°F) | 2 mm |
| 1987 | 24°C (75°F) | 21°C (70°F) | 5 mm |
| 1986 | 23°C (74°F) | 18°C (64°F) | 24 mm |
| 1985 | 24°C (75°F) | 19°C (67°F) | 9 mm |
| 1984 | 27°C (80°F) | 20°C (68°F) | 5 mm |
| 1983 | 28°C (83°F) | 17°C (62°F) | 0 mm |
| 1982 | 28°C (83°F) | 17°C (63°F) | 0 mm |
| 1981 | 19°C (67°F) | 16°C (60°F) | 60 mm |
| 1980 | 23°C (73°F) | 18°C (64°F) | 1 mm |
| 1979 | 21°C (69°F) | 11°C (52°F) | 0 mm |
| 1978 | 32°C (90°F) | 19°C (67°F) | 0 mm |
| 1977 | 23°C (73°F) | 13°C (56°F) | 0 mm |
| 1976 | 19°C (67°F) | 13°C (55°F) | 10 mm |
| 1975 | 27°C (81°F) | 17°C (63°F) | 0 mm |
| 1974 | 23°C (74°F) | 13°C (56°F) | 0 mm |
| 1973 | 24°C (76°F) | 18°C (65°F) | 0 mm |
| 1972 | 23°C (73°F) | 12°C (54°F) | 0 mm |
| 1971 | 19°C (67°F) | 13°C (55°F) | 0 mm |