Almanac Averages and Extremes for September 21
OTTAWA INTL A
ONTARIO
| Category (Period of Record) | Value | Year |
|---|---|---|
| Average Maximum Temperature | ||
| Average Minimum Temperature | ||
| Monthly Frequency of Precipitation | ||
| Highest Temperature (2012-2022) | 28.3 °C | 2018 |
| Lowest Temperature (2012-2022) | 0.1 °C | 2020 |
| Greatest Precipitation (2012-2022) | 31.6 mm | 2018 |
| Greatest Rainfall (2012-2022) | 31.6 mm | 2018 |
| Greatest Snowfall (2012-2022) | ||
| Most Snow on the Ground |
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| 2022 | 22.7 | 10.9 | 16.8 | 3.0 | 0.0 | 3.0 | 27 | 37 | |
| 2021 | 23.1 | 12.7 | 17.9 | LegendTT | 0.0 | LegendTT | 22 | 40 | |
| 2020 | 17.8 | 0.1 | 9.0 | 0.0 | 0.0 | 0.0 | LegendMM | LegendMM | |
| 2019 | 28.1 | 11.7 | 19.9 | 0.0 | 0.0 | 0.0 | LegendMM | LegendMM | |
| 2018 | 28.3 | 12.8 | 20.6 | 31.6 | 0.0 | 31.6 | 24 | 78 |
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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