Weather on August 18 in Calgary
Historical weather data for August 18 in Calgary, Canada
Based on 53 years of data from CALGARY GLENMORE DAM
About This Date
August 18th in Calgary, Canada typically brings pleasant summer weather, with average highs around 24°C and lows near 9°C — a 26°F daily swing. Over 53 years of records, the warmest August 18th was in 2020 (24°C average), while the coldest was 1973 (7°C) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 28% of August 18th dates historically, with the wettest August 18th recording 1.84" of rain. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Calgary? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 24°C (76°F) | 11°C (51°F) | -- |
| 2023 | 28°C (82°F) | 7°C (44°F) | 6 mm |
| 2022 | 31°C (87°F) | 12°C (53°F) | 0 mm |
| 2021 | 20°C (68°F) | 6°C (42°F) | 0 mm |
| 2020 | 33°C (92°F) | 16°C (61°F) | 0 mm |
| 2019 | 24°C (76°F) | 11°C (51°F) | 1 mm |
| 2018 | 19°C (66°F) | 8°C (46°F) | 0 mm |
| 2017 | 29°C (84°F) | 9°C (48°F) | 0 mm |
| 2016 | 18°C (65°F) | 9°C (49°F) | 0 mm |
| 2015 | 19°C (66°F) | 10°C (50°F) | 3 mm |
| 2014 | 28°C (82°F) | 12°C (54°F) | 0 mm |
| 2013 | 27°C (81°F) | 13°C (55°F) | 0 mm |
| 2012 | 28°C (83°F) | 9°C (49°F) | 0 mm |
| 2011 | 16°C (61°F) | 8°C (47°F) | 15 mm |
| 2010 | 29°C (85°F) | 12°C (54°F) | 0 mm |
| 2009 | 25°C (77°F) | 14°C (57°F) | 7 mm |
| 2008 | 34°C (93°F) | 14°C (57°F) | 0 mm |
| 2007 | 24°C (76°F) | 8°C (46°F) | 0 mm |
| 2006 | 27°C (81°F) | 8°C (46°F) | 0 mm |
| 2005 | 13°C (56°F) | 4°C (40°F) | 0 mm |
| 2004 | 23°C (74°F) | 8°C (46°F) | 0 mm |
| 2003 | 33°C (92°F) | 12°C (53°F) | 0 mm |
| 2002 | 21°C (70°F) | 6°C (42°F) | 0 mm |
| 2001 | 33°C (92°F) | 12°C (53°F) | 0 mm |
| 2000 | 29°C (84°F) | 6°C (43°F) | 0 mm |
| 1999 | 25°C (77°F) | -- | -- |
| 1998 | 22°C (72°F) | 7°C (44°F) | 0 mm |
| 1997 | 22°C (72°F) | 5°C (41°F) | 1 mm |
| 1996 | 19°C (67°F) | 3°C (37°F) | 0 mm |
| 1995 | 18°C (65°F) | 6°C (42°F) | 5 mm |
| 1994 | 22°C (72°F) | 12°C (53°F) | 1 mm |
| 1992 | 32°C (89°F) | 13°C (56°F) | 3 mm |
| 1991 | 30°C (86°F) | 13°C (56°F) | 0 mm |
| 1990 | 21°C (69°F) | 12°C (53°F) | 47 mm |
| 1989 | 21°C (69°F) | 11°C (52°F) | 1 mm |
| 1988 | 21°C (69°F) | 13°C (55°F) | 2 mm |
| 1987 | 18°C (65°F) | 5°C (41°F) | 0 mm |
| 1986 | 29°C (85°F) | 12°C (54°F) | 0 mm |
| 1985 | 23°C (74°F) | 8°C (46°F) | 0 mm |
| 1984 | 24°C (76°F) | 11°C (52°F) | 0 mm |
| 1983 | 15°C (59°F) | 8°C (46°F) | 43 mm |
| 1982 | 25°C (77°F) | 10°C (50°F) | 0 mm |
| 1981 | 24°C (76°F) | 10°C (50°F) | 0 mm |
| 1980 | 18°C (64°F) | 9°C (49°F) | 1 mm |
| 1979 | 28°C (82°F) | 13°C (56°F) | 1 mm |
| 1978 | 22°C (71°F) | 4°C (39°F) | 0 mm |
| 1977 | 23°C (74°F) | 6°C (43°F) | 0 mm |
| 1976 | 20°C (68°F) | 6°C (42°F) | 0 mm |
| 1975 | 15°C (59°F) | 10°C (50°F) | 0 mm |
| 1974 | 26°C (79°F) | 9°C (48°F) | 0 mm |
| 1973 | 11°C (52°F) | 3°C (38°F) | 0 mm |
| 1972 | 23°C (74°F) | 8°C (47°F) | 0 mm |
| 1971 | 25°C (77°F) | 12°C (54°F) | 0 mm |