Almanac Averages and Extremes for April 30
CALGARY INT'L A
ALBERTA
| Category (Period of Record) | Value | Year |
|---|---|---|
| Average Maximum Temperature | 14.2 °C | |
| Average Minimum Temperature | 0.7 °C | |
| Monthly Frequency of Precipitation | 30 % | |
| Highest Temperature (1885-2012) | 25.6 °C | 1941, 1957 |
| Lowest Temperature (1885-2012) | -17.8 °C | 1954 |
| Greatest Precipitation (1885-2012) | 37.1 mm | 1912 |
| Greatest Rainfall (1885-2012) | 37.1 mm | 1912 |
| Greatest Snowfall (1885-2012) | 17.8 cm | 1886 |
| Most Snow on the Ground (1955-2012) | 20.0 cm | 1966 |
| 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 | 11.2 | 0.3 | 5.8 | 4.0 | 0.0 | 4.0 | 0 | 30LegendEE | 46LegendEE |
| 2011 | 10.7 | -2.3 | 4.2 | LegendTT | 0.0 | LegendTT | 0 | 35LegendEE | 35LegendEE |
| 2010 | 11.4 | 1.1 | 6.3 | 0.0 | 0.0 | 0.0 | LegendTT | 32 | 44 |
| 2009 | 8.3 | -3.9 | 2.2 | 0.0 | 0.0 | 0.0 | 0 | 34LegendEE | 48LegendEE |
| 2008 | 11.3 | 1.0 | 6.2 | LegendTT | LegendTT | 0.2 | 0 | 33LegendEE | 46LegendEE |
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: