Almanac Averages and Extremes for December 17
CALGARY INT'L A
ALBERTA
| Category (Period of Record) | Value | Year |
|---|---|---|
| Average Maximum Temperature | -1.4 °C | |
| Average Minimum Temperature | -13.6 °C | |
| Monthly Frequency of Precipitation | 22 % | |
| Highest Temperature (1881-2011) | 13.9 °C | 1953, 1954 |
| Lowest Temperature (1881-2011) | -42.8 °C | 1924 |
| Greatest Precipitation (1881-2011) | 9.1 mm | 1971 |
| Greatest Rainfall (1881-2011) | ||
| Greatest Snowfall (1881-2011) | 13.0 cm | 1971 |
| Most Snow on the Ground (1955-2011) | 25.0 cm | 2008 |
| 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 | 11.9 | -2.1 | 4.9 | 0.0 | 0.0 | 0.0 | 1 | 27LegendEE | 50LegendEE |
| 2010 | -10.9 | -13.4 | -12.2 | 0.0 | 2.2 | 0.4 | 4 | <31 | |
| 2009 | 6.5 | -6.5 | 0.0 | 0.0 | 0.0 | 0.0 | 8 | <31 | |
| 2008 | -7.4 | -21.5 | -14.5 | 0.0 | 3.0 | 1.4 | 25 | 36LegendEE | 56LegendEE |
| 2007 | 3.4 | -6.3 | -1.5 | 0.0 | 0.0 | 0.0 | LegendTT | <31 |
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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