Almanac Averages and Extremes for September 12
CALGARY INT'L A
ALBERTA
| Category (Period of Record) | Value | Year |
|---|---|---|
| Average Maximum Temperature | 18.0 °C | |
| Average Minimum Temperature | 4.5 °C | |
| Monthly Frequency of Precipitation | 30 % | |
| Highest Temperature (1884-2011) | 30.0 °C | 1888, 1937 |
| Lowest Temperature (1884-2011) | -6.1 °C | 1890 |
| Greatest Precipitation (1884-2011) | 92.6 mm | 1985 |
| Greatest Rainfall (1884-2011) | 92.6 mm | 1985 |
| Greatest Snowfall (1884-2011) | 8.9 cm | 1907 |
| Most Snow on the Ground (1955-2011) |
| Year | Maximum Temperature DefinitionMax Temp °C |
Minimum Temperature DefinitionMin Temp °C |
Mean Temperature DefinitionMean Temp °C |
Total Rain DefinitionTotal Rain mm |
Total Snow DefinitionTotal Snow cm |
Total Precipitation DefinitionTotal Precip mm |
Snow on Ground DefinitionSnow on Grnd cm |
Direction of Maximum Gust DefinitionDir of Max Gust 10's deg |
Speed of Maximum Gust DefinitionSpd of Max Gust km/h |
|---|---|---|---|---|---|---|---|---|---|
| 2011 | 12.3 | 7.7 | 10.0 | 0.0 | 0.0 | 0.0 | 0 | <31 | |
| 2010 | 16.0 | 1.3 | 8.7 | 0.4 | 0.0 | 0.4 | 0 | <31 | |
| 2009 | 26.6 | 5.8 | 16.2 | 0.0 | 0.0 | 0.0 | 0 | 15LegendEE | 39LegendEE |
| 2008 | 16.7 | 5.6 | 11.2 | 6.2 | 0.0 | 6.2 | 0 | 30LegendEE | 37LegendEE |
| 2007 | 11.8 | 2.4 | 7.1 | 20.0 | 0.0 | 20.0 | 0 | 1LegendEE | 61LegendEE |
Legend
- A = Accumulated
- B = More than one occurrence and estimated
- C = Precipitation occurred, amount uncertain
- E = Estimated
- F = Accumulated and estimated
- L = Precipitation may or may not have occurred
- M = Missing
- N = Temperature missing but known to be > 0
- S = More than one occurrence
- T = Trace
- Y = Temperature missing but known to be < 0
- [empty] = Indicates an unobserved value
- ^ = The value displayed is based on incomplete data
- † = Data that is not subject to review by the National Climate Archives
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