Glebe-Dows Lake has warmer summer afternoons than 78% of Canadian towns
The coldest hours of a January night bottom out at −14.0°C on average. By precipitation alone, it ranks wetter than 60% of Canadian towns. Seasons differ by 41°C, from the coldest nights to the warmest afternoons. Plan time outside from May to September, when highs sit at 19–27°C.
Environment and Climate Change Canada’s 1991–2020 normals at its Ottawa (City) station, 3.2 km south-west.
A year in Glebe-Dows Lake at a glance
Each month’s typical high and low, in °C.
What stands out about Glebe-Dows Lake’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Glebe-Dows Lake feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 147 frosts and 121 warm days a year
Frost comes from October to April; in January almost every night freezes. On about 15 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 938 mm a year
June brings the most rain and snow; February, the least. On about 120 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
185 cm of snow in a typical year
Snow falls from October to April, most of all in January (about 45 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Glebe-Dows Lake
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 Glebe-Dows Lake’s climate
What the normals mean for a garden, a day outside and the depth of winter.
The growing season between frosts lasts about 158 days, roughly 30 April to 6 October.
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 →The wind chill passes −20 on about 39 days in a normal year.
Count on some 50 humid days a year with the humidex past 30.
Ice storms, floods and heat waves are risks, not averages: they are on Glebe-Dows Lake’s hazards page.
Flood & hazards →ECCC’s normals location: Ottawa (City)
Ottawa (City) is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 3.2 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), 9.3 km |
How Glebe-Dows Lake 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
Nearby places read from a different ECCC location (places on Glebe-Dows Lake’s own would show the same figures). Glebe-Dows Lake has few close neighbours with figures, so the list reaches 18–26 km out.
Glebe-Dows Lake weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| 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 |
March: −28.5°C at its coldest, 26.5°C at its warmest
The month to count on least is January: one year in three its average strays more than 3.1°C from −9.6°C. June moves least, typically by 1.1°C.
Where Glebe-Dows Lake’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Ottawa (City), the nearest location with a full year of temperatures.
- Comparisons: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
- 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 Glebe-Dows Lake’s climate
How warm does Glebe-Dows Lake get in summer?
Afternoons average 26.7°C in July, the warmest time of year.
How cold does Glebe-Dows Lake get in winter?
January nights average −14.0°C, the coldest of the year.
How much rain and snow does Glebe-Dows Lake get?
Around 938 mm a year in all, from 95 mm in June down to 52 mm in February.
How long does snow stay on the ground?
There is 1 cm of snow or more on the ground on roughly 115 days a year.
Are these figures for Glebe-Dows Lake itself?
Nearly: Ottawa (City), the location behind them, sits just beyond Glebe-Dows Lake’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Glebe-Dows Lake →
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).