Weather on September 12 in Calgary
Historical weather data for September 12 in Calgary, Canada
Based on 54 years of data from CALGARY GLENMORE DAM
About This Date
September 12th in Calgary, Canada typically brings mild fall weather, with average highs around 18°C and lows near 5°C. Over 54 years of records, the warmest September 12th was in 2013 (19°C average), while the coldest was 1986 (3°C) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 44% of September 12th dates historically, with the wettest September 12th recording 6.66" 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 September 12th in Calgary? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 26°C (78°F) | 8°C (47°F) | -- |
| 2023 | 24°C (75°F) | 13°C (56°F) | 0.04" |
| 2022 | 20°C (68°F) | 11°C (51°F) | 0" |
| 2021 | 16°C (61°F) | 9°C (49°F) | 0.23" |
| 2020 | 18°C (65°F) | 9°C (48°F) | 0" |
| 2019 | 21°C (70°F) | 4°C (39°F) | 0.06" |
| 2018 | 8°C (47°F) | 0°C (32°F) | 0" |
| 2017 | 21°C (69°F) | 7°C (45°F) | 0.12" |
| 2016 | 12°C (53°F) | 2°C (35°F) | 0.02" |
| 2015 | 28°C (83°F) | 9°C (49°F) | 0" |
| 2014 | 9°C (49°F) | 0°C (32°F) | 0.22" |
| 2013 | 28°C (83°F) | 9°C (49°F) | 0" |
| 2012 | 19°C (66°F) | 1°C (34°F) | 0" |
| 2011 | 12°C (54°F) | 8°C (46°F) | 0" |
| 2010 | 17°C (62°F) | 1°C (34°F) | 0" |
| 2009 | 27°C (80°F) | 4°C (40°F) | 0" |
| 2008 | 17°C (62°F) | 6°C (42°F) | 0.62" |
| 2007 | 13°C (55°F) | 2°C (36°F) | 1.92" |
| 2006 | 22°C (72°F) | 9°C (49°F) | 0" |
| 2005 | 11°C (52°F) | 3°C (37°F) | 0.1" |
| 2004 | 15°C (59°F) | 6°C (42°F) | 0.02" |
| 2003 | 13°C (55°F) | 3°C (37°F) | 0.2" |
| 2002 | 28°C (82°F) | 6°C (42°F) | 0" |
| 2001 | 19°C (66°F) | 8°C (46°F) | 0" |
| 2000 | 23°C (73°F) | 9°C (49°F) | 0" |
| 1999 | 18°C (64°F) | -1°C (31°F) | 0" |
| 1998 | 24°C (76°F) | 4°C (40°F) | 0" |
| 1997 | 13°C (56°F) | 5°C (41°F) | 0.72" |
| 1996 | 27°C (80°F) | 4°C (40°F) | 0" |
| 1995 | 26°C (79°F) | 7°C (44°F) | 0" |
| 1994 | 18°C (65°F) | 1°C (34°F) | 0" |
| 1993 | 8°C (46°F) | 2°C (35°F) | 0.08" |
| 1992 | 11°C (52°F) | 4°C (40°F) | 0.16" |
| 1991 | 25°C (77°F) | 5°C (41°F) | 0" |
| 1990 | 21°C (70°F) | 7°C (44°F) | 0.6" |
| 1989 | 23°C (74°F) | 3°C (37°F) | 0" |
| 1988 | 23°C (74°F) | 5°C (41°F) | 0" |
| 1987 | 28°C (82°F) | 8°C (47°F) | 0.02" |
| 1986 | 5°C (41°F) | 2°C (36°F) | 0.22" |
| 1985 | 12°C (53°F) | 8°C (47°F) | 6.66" |
| 1984 | 11°C (51°F) | 2°C (36°F) | 0.18" |
| 1983 | 16°C (60°F) | 2°C (36°F) | 0.02" |
| 1982 | 15°C (59°F) | 6°C (42°F) | 0" |
| 1981 | 19°C (66°F) | 9°C (49°F) | 0" |
| 1980 | 11°C (51°F) | 7°C (44°F) | 0.43" |
| 1979 | 17°C (62°F) | 2°C (36°F) | 0" |
| 1978 | 12°C (53°F) | 6°C (42°F) | 0" |
| 1977 | 21°C (70°F) | 4°C (39°F) | 0" |
| 1976 | 12°C (53°F) | 7°C (44°F) | 0.56" |
| 1975 | 24°C (75°F) | 2°C (36°F) | 0" |
| 1974 | 17°C (62°F) | -3°C (27°F) | 0" |
| 1973 | 16°C (60°F) | 8°C (46°F) | 0.08" |
| 1972 | 17°C (62°F) | 1°C (34°F) | 0" |
| 1971 | 19°C (66°F) | 3°C (37°F) | 0.41" |