Summer arrives in force in Crestview-Tanglewood, hotter than in 78% of Canadian towns
Deep winter brings January lows near −14.0°C. By precipitation alone, it ranks wetter than 60% of Canadian towns. The gap between a January night and a July afternoon is 41°C. Plan for rain or snow on about 120 days a year, the days with 1 mm or more.
Figures: ECCC’s 1991–2020 normals for Ottawa (City) (4.8 km north).
A year in Crestview-Tanglewood at a glance
Each month’s typical high and low, in °C.
What stands out about Crestview-Tanglewood’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Crestview-Tanglewood feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 147 days, 20°C on 121
The frost season runs October to April, and January freezes nearly every night. 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
938 mm of precipitation in a typical year
The most falls in June, the least in February.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 185 cm of snow a 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 Crestview-Tanglewood
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months.
Living with Crestview-Tanglewood’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Tender plants are usually safe from around 30 April until frost returns near 6 October: about 158 days.
Highs of 17–27°C with nights of 8°C or more come in May, Jun, Jul, Aug and Sep.
Parks & trails →Winter brings about 39 days with a wind chill below −20.
Humid summer days, the humidex above 30, number about 50 a year.
Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Crestview-Tanglewood’s hazards page.
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 | 4.8 km north |
| 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), 5.9 km |
How Crestview-Tanglewood 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
The nearest places on a normals location of their own: those that share Crestview-Tanglewood’s would only repeat its figures. No closer places have figures: these lie 23–26 km from Crestview-Tanglewood.
Crestview-Tanglewood 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 | −5.2°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 |
A January here can run warm or cold, its average moving by about 3.1°C; the steadiest month is June
Records from 1991 to 2020: no month spans more than March, between −28.5°C (2003) and 26.5°C (2012).
Where Crestview-Tanglewood’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for Ottawa (City) from ECCC’s climate data site, the nearest location with every month of temperature.
- Comparisons: Canada’s towns and neighbourhoods of 2,500+ (no city totals, no reserves), each through its own nearest location.
- Not on this page: sunshine, not in ECCC’s 1991–2020 normals, and the effect of the town’s height, for which there is no figure.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Crestview-Tanglewood’s climate
How warm does Crestview-Tanglewood get in summer?
Midsummer means July, with afternoons near 26.7°C on a typical day.
How cold does Crestview-Tanglewood get in winter?
The year’s coldest nights belong to January, at about −14.0°C.
How much rain and snow does Crestview-Tanglewood get?
938 mm a year counting snow as water. The wettest month is June (95 mm); the driest, February (52 mm).
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 Crestview-Tanglewood itself?
They are the normals for Ottawa (City), measured just outside Crestview-Tanglewood itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Crestview-Tanglewood →
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).