Afternoon heat in Old Ottawa East beats that of 78% of Canadian towns
The depth of winter brings overnight lows near −14.0°C. Counting rain and snow together, it is wetter than 60% of Canadian towns. A year here swings 41°C from midwinter lows to midsummer highs. Heating does most of its work from October to April, in months below 10°C on average.
Environment and Climate Change Canada’s 1991–2020 normals at its Ottawa (City) station, 4.9 km south-west.
A year in Old Ottawa East at a glance
Each month’s typical high and low, in °C.
What stands out about Old Ottawa East’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Old Ottawa East feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
147 frost days and 121 days above 20°C a year
From October to April frost is routine, and in January it comes on almost every night. Deep cold, under −20°C, comes on about 15 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
938 mm of precipitation in a typical year
June brings the most rain and snow; February, the least. About 120 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 185 cm in a normal year
The snow season runs October to April; January brings the most, about 45 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Old Ottawa East
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
One degree below 18°C for one day makes one heating degree day; the year’s days are added together.
Living with Old Ottawa East’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Between the last frost, near 30 April, and the first, near 6 October, lie about 158 frost-free days.
The outdoor season by the averages is May, Jun, Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →On some 39 days a year the wind chill drops past −20; mitts and a scarf earn their place.
Expect around 50 sticky days a year with the humidex above 30.
Thirty years of averages say little about one bad storm; Old Ottawa East’s hazards page does.
Flood & hazards →ECCC’s normals location: Ottawa (City)
Behind the 1991–2020 normals for Ottawa (City) are 2 stations, which ECCC combines into one record.
| Distance from the town | 4.9 km south-west |
| Station altitude | 79 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | Yes |
| Coldest reading, 1991–2020 | −32.2°C |
| Hottest reading, 1991–2020 | 37.3°C |
| Average wind | 11.5 km/h on average, most often from the west |
| Next-nearest location | Ottawa (Airport), 10 km |
How Old Ottawa East compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Ontario.
Nearby towns’ climate
Places around Old Ottawa East whose figures come from another normals location. The nearest places to Old Ottawa East with figures are 17–26 km away.
Old Ottawa East weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −5.2°C | −14.0°C | −9.6°C | 65 mm | 45 cm |
| February | −3.3°C | −12.9°C | −8.1°C | 52 mm | 41 cm |
| March | 2.5°C | −6.9°C | −2.2°C | 62 mm | 31 cm |
| April | 11.2°C | 1.1°C | 6.2°C | 81 mm | 8 cm |
| May | 19.4°C | 8.0°C | 13.8°C | 80 mm | 0 cm |
| June | 24.2°C | 13.3°C | 18.8°C | 95 mm | 0 cm |
| July | 26.7°C | 15.8°C | 21.3°C | 92 mm | 0 cm |
| August | 25.6°C | 14.6°C | 20.1°C | 87 mm | 0 cm |
| September | 21.1°C | 10.1°C | 15.6°C | 87 mm | 0 cm |
| October | 13.3°C | 4.1°C | 8.8°C | 90 mm | 2 cm |
| November | 5.8°C | −1.8°C | 2.0°C | 72 mm | 16 cm |
| December | −1.5°C | −8.7°C | −5.1°C | 74 mm | 43 cm |
| Year | 11.7°C | 1.9°C | 6.8°C | 938 mm | 185 cm |
January varies most from one year to the next (3.1°C), June least
Bars run from each month’s record low to its record high since 1991. March spans the most, from −28.5°C (2003) to 26.5°C (2012).
Where Old Ottawa East’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Ottawa (City) (the closest location with all twelve months of temperatures).
- Comparisons: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Old Ottawa East’s climate
How warm does Old Ottawa East get in summer?
In July, the warmest month, the typical high is 26.7°C.
How cold does Old Ottawa East get in winter?
On a normal January night the air drops to −14.0°C, the coldest of the year.
How much rain and snow does Old Ottawa East get?
June is the wettest month at 95 mm and February the driest at 52 mm, for 938 mm over the year.
How long does snow stay on the ground?
About 115 days a year count as snow-covered, with 1 cm or more.
Are these figures for Old Ottawa East itself?
Almost: ECCC’s Ottawa (City) location, which gives these figures, lies a short way outside Old Ottawa East.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Old Ottawa East →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).