Old Barrhaven West has warmer summer afternoons than 86% of Canadian towns
Deep winter brings January lows near −14.3°C. June is the wettest month, February the driest. Winter nights are cold: in January they are colder than in 61% of Canadian towns. An umbrella or a shovel earns its place on about 118 days a year with 1 mm or more.
Figures: ECCC’s 1991–2020 normals for Ottawa (Airport) (9.4 km north-east).
A year in Old Barrhaven West at a glance
Each month’s typical high and low, in °C.
What stands out about Old Barrhaven West’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Old Barrhaven West feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 154 frosts and 120 warm days a year
Frost comes from October to April; in January almost every night freezes. On about 16 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
About 930 mm of rain and snow a year
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
232 cm of snow in a typical year
Expect snow from October to April, with about 59 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Old Barrhaven West
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
A heating degree day is one degree of shortfall below 18°C for one day, summed over the year.
Living with Old Barrhaven West’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Plant out after about 29 April; the first frost of autumn usually arrives near 7 October, leaving roughly 160 days without frost.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul, Aug and Sep.
Parks & trails →The wind chill passes −20 on about 47 days in a normal year.
The air feels heavier than 30 on the humidex for about 49 days a year.
Bad-weather days, from blizzards to floods, get their own page for Old Barrhaven West: the hazards page.
Flood & hazards →ECCC’s normals location: Ottawa (Airport)
Behind the 1991–2020 normals for Ottawa (Airport) are 2 stations, which ECCC combines into one record.
| Distance from the town | 9.4 km north-east |
| Station altitude | 114 m |
| Completeness | at least 25 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −33.1°C |
| Hottest reading, 1991–2020 | 36.9°C |
| Average wind | 13.5 km/h on average, most often from the west |
| Next-nearest location | Ottawa (City), 13 km |
How Old Barrhaven West compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Ontario.
Nearby towns’ climate
Places around Old Barrhaven West whose figures come from another normals location. The nearest places to Old Barrhaven West with figures are 11–30 km away.
Old Barrhaven West weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −5.5°C | −14.3°C | −10.0°C | 70 mm | 59 cm |
| February | −3.6°C | −13.2°C | −8.5°C | 50 mm | 49 cm |
| March | 2.4°C | −7.1°C | −2.4°C | 66 mm | 39 cm |
| April | 11.3°C | 0.5°C | 5.9°C | 81 mm | 12 cm |
| May | 19.6°C | 7.5°C | 13.6°C | 75 mm | under 1 cm |
| June | 24.4°C | 12.9°C | 18.7°C | 97 mm | 0 cm |
| July | 27.0°C | 15.4°C | 21.2°C | 89 mm | 0 cm |
| August | 25.8°C | 14.3°C | 20.1°C | 79 mm | 0 cm |
| September | 21.0°C | 9.6°C | 15.3°C | 90 mm | 0 cm |
| October | 13.0°C | 3.4°C | 8.2°C | 87 mm | 3 cm |
| November | 5.8°C | −2.4°C | 1.7°C | 74 mm | 21 cm |
| December | −1.9°C | −9.6°C | −5.8°C | 72 mm | 50 cm |
| Year | 11.6°C | 1.4°C | 6.5°C | 930 mm | 232 cm |
Two years in three, January’s average lands within 3.2°C of normal, against the steadier August
Records from 1991 to 2020: no month spans more than March, between −29.0°C (2003) and 27.4°C (2012).
Where Old Barrhaven West’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Ottawa (Airport), its nearest location with complete 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 Barrhaven West’s climate
How warm does Old Barrhaven West get in summer?
A normal July afternoon tops out at about 27.0°C, the year’s high point.
How cold does Old Barrhaven West get in winter?
Expect nights around −14.3°C in January; no month is colder.
How much rain and snow does Old Barrhaven West get?
A normal year brings 930 mm, snow included as water: June is wettest at 97 mm, February driest at 50 mm.
How long does snow stay on the ground?
Count on about 118 days of snow cover a year, 1 cm or deeper.
Are these figures for Old Barrhaven West itself?
Nearly: Ottawa (Airport), the location behind them, sits just beyond Old Barrhaven West’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Old Barrhaven West →
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).