Almanac Averages and Extremes for April 18
OTTAWA CDA
ONTARIO
Category (Period of Record) | Value | Year |
---|---|---|
Average Maximum Temperature | 11.6 °C | |
Average Minimum Temperature | 1.8 °C | |
Monthly Frequency of Precipitation | 44 % | |
Highest Temperature (1890-2023) | 30.0 °C | 1976 |
Lowest Temperature (1890-2023) | -7.8 °C | 1916 |
Greatest Precipitation (1890-2023) | 23.6 mm | 1891 |
Greatest Rainfall (1890-2023) | 23.6 mm | 1891 |
Greatest Snowfall (1890-2023) | 7.6 cm | 1918 |
Most Snow on the Ground (1961-2023) | 3.0 cm | 1972 |
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 |
---|---|---|---|---|---|---|---|---|---|
2023 † | 8.0 | 3.5 | 5.8 | 1.0 | 0.0 | 1.0 | 0 | ||
2022 † | 13.0 | -1.0 | 6.0 | 11.0 | 0.0 | 11.0 | 0 | ||
2021 † | 15.0 | 4.5 | 9.8 | 0.0 | 0.0 | 0.0 | 0 | ||
2020 | LegendMM | LegendMM | LegendMM | LegendMM | LegendMM | LegendMM | LegendMM | ||
2019 † | 17.0 | 4.0 | 10.5 | 10.6 | 0.0 | 10.6 | 0 |
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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