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Almanac Averages and Extremes for April 17
CALGARY INT'L A
ALBERTA
| Category (Period of Record) | Value | Year |
|---|---|---|
| Average Maximum Temperature | 11.8 °C | |
| Average Minimum Temperature | -1.7 °C | |
| Monthly Frequency of Precipitation | 30 % | |
| Highest Temperature (1885-2012) | 26.7 °C | 1923 |
| Lowest Temperature (1885-2012) | -15.6 °C | 1953 |
| Greatest Precipitation (1885-2012) | 14.0 mm | 1979 |
| Greatest Rainfall (1885-2012) | 7.6 mm | 1978 |
| Greatest Snowfall (1885-2012) | 13.5 cm | 1951 |
| Most Snow on the Ground (1955-2012) | 12.0 cm | 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 |
|---|---|---|---|---|---|---|---|---|---|
| 2012 | 3.9 | -1.7 | 1.1 | LegendTT | 1.0 | 1.0 | 0 | <31 | |
| 2011 | -1.6 | -8.3 | -5.0 | 0.0 | 1.0 | 1.0 | 12 | <31 | |
| 2010 | 20.5 | 0.4 | 10.5 | 0.0 | 0.0 | 0.0 | 0 | 14 | 46 |
| 2009 | 15.7 | -3.1 | 6.3 | 0.0 | 0.0 | 0.0 | 0 | 16LegendEE | 32LegendEE |
| 2008 | 16.0 | 1.4 | 8.7 | 0.0 | 0.0 | 0.0 | 0 | 27LegendEE | 54LegendEE |
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
- Date modified: