Weather on August 18 in Montreal
Historical weather data for August 18 in Montreal, Canada
Avg High25°C (77°F)
Avg Low17°C (62°F)
Warmest200226°C
Coldest200715°C
Based on 51 years of data from MCTAVISH
About This Date
August 18th 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 18th was in 2002 (26°C average), while the coldest was 2007 (15°C) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 25% of August 18th dates historically, with the wettest August 18th recording 2" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Montreal? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 21°C (70°F) | 12°C (53°F) | -- |
| 2023 | 24°C (76°F) | 17°C (62°F) | 17 mm |
| 2022 | 23°C (73°F) | 17°C (63°F) | 2 mm |
| 2021 | 31°C (87°F) | 21°C (70°F) | 0 mm |
| 2020 | 24°C (76°F) | 16°C (61°F) | 5 mm |
| 2019 | 27°C (81°F) | 21°C (69°F) | 0 mm |
| 2018 | 25°C (77°F) | 17°C (63°F) | 0 mm |
| 2017 | 21°C (70°F) | 16°C (61°F) | 48 mm |
| 2016 | 28°C (82°F) | 20°C (68°F) | 0 mm |
| 2015 | 31°C (88°F) | 21°C (70°F) | 50 mm |
| 2014 | 22°C (72°F) | 13°C (55°F) | 0 mm |
| 2013 | 27°C (80°F) | 16°C (61°F) | 0 mm |
| 2012 | 22°C (72°F) | 15°C (59°F) | 0 mm |
| 2011 | 28°C (83°F) | 19°C (66°F) | 0 mm |
| 2010 | 23°C (73°F) | 16°C (61°F) | 0 mm |
| 2009 | 30°C (86°F) | 23°C (73°F) | 0 mm |
| 2008 | 29°C (85°F) | 16°C (61°F) | 39 mm |
| 2007 | 18°C (64°F) | 12°C (53°F) | 0 mm |
| 2006 | 29°C (84°F) | 18°C (64°F) | 0 mm |
| 2005 | 20°C (68°F) | 12°C (54°F) | 0 mm |
| 2004 | 27°C (80°F) | 18°C (65°F) | 0 mm |
| 2003 | 27°C (80°F) | 17°C (62°F) | 0 mm |
| 2002 | 32°C (89°F) | 21°C (69°F) | 0 mm |
| 2001 | 27°C (80°F) | 19°C (67°F) | 0 mm |
| 2000 | 22°C (72°F) | 13°C (55°F) | 0 mm |
| 1999 | 24°C (76°F) | 18°C (64°F) | 0 mm |
| 1998 | 24°C (75°F) | 12°C (54°F) | 0 mm |
| 1997 | 22°C (72°F) | 14°C (57°F) | 0 mm |
| 1994 | 23°C (73°F) | 15°C (59°F) | 0 mm |
| 1992 | 23°C (74°F) | 18°C (64°F) | 4 mm |
| 1991 | 24°C (75°F) | 21°C (69°F) | 1 mm |
| 1990 | 28°C (83°F) | 16°C (60°F) | 51 mm |
| 1989 | 24°C (75°F) | 14°C (58°F) | 0 mm |
| 1988 | 21°C (69°F) | 13°C (56°F) | 0 mm |
| 1987 | 28°C (82°F) | 21°C (70°F) | 0 mm |
| 1986 | 26°C (79°F) | 20°C (68°F) | 0 mm |
| 1985 | 28°C (82°F) | 13°C (55°F) | 0 mm |
| 1984 | 23°C (74°F) | 12°C (54°F) | 0 mm |
| 1983 | 27°C (80°F) | 19°C (67°F) | 0 mm |
| 1982 | 23°C (74°F) | 14°C (57°F) | 0 mm |
| 1981 | 24°C (76°F) | 14°C (58°F) | 0 mm |
| 1980 | 26°C (79°F) | 16°C (60°F) | 1 mm |
| 1979 | 21°C (70°F) | 13°C (56°F) | 19 mm |
| 1978 | 25°C (77°F) | 17°C (62°F) | 0 mm |
| 1977 | 18°C (64°F) | 13°C (56°F) | 0 mm |
| 1976 | 24°C (76°F) | 14°C (58°F) | 0 mm |
| 1975 | 25°C (77°F) | 17°C (62°F) | 0 mm |
| 1974 | 26°C (79°F) | 18°C (64°F) | 0 mm |
| 1973 | 31°C (87°F) | 21°C (69°F) | 11 mm |
| 1972 | 21°C (69°F) | 17°C (62°F) | 21 mm |
| 1971 | 27°C (81°F) | 19°C (66°F) | 0 mm |