Trend-Arlington has warmer summer afternoons than 78% of Canadian towns
January mornings start at about −14.0°C. Rain or snow is most frequent in June and least in February. Its yearly rain and snow top those of 60% of Canadian towns. Frost comes on about 147 days a year, so leave time to clear the car.
Read at Ottawa (City), 7.6 km north-east: ECCC’s normals for 1991–2020.
A year in Trend-Arlington at a glance
Each month’s typical high and low, in °C.
What stands out about Trend-Arlington’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Trend-Arlington feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
Frost on 147 days, 20°C on 121
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
About 938 mm of rain and snow a year
Some 120 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 185 cm of snow a year
Expect snow from October to April, with about 45 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 Trend-Arlington
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 Trend-Arlington’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 comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: May, Jun, Jul, Aug and Sep.
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.
Averages smooth over blizzards, ice storms, floods and heat waves; Trend-Arlington’s hazards page covers the risks.
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 | 7.6 km north-east |
| 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), 9.0 km |
How Trend-Arlington compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Ontario.
Nearby towns’ climate
Places around Trend-Arlington whose figures come from another normals location. Distances here run 24–25 km: that is how far the nearest places with figures are from Trend-Arlington.
Trend-Arlington 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 |
A January here can run warm or cold, its average moving by about 3.1°C; the steadiest month is June
Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −28.5°C in 2003 to 26.5°C in 2012.
Where Trend-Arlington’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: every Canadian town and neighbourhood of 2,500 or more, each read from its own nearest location; city totals and reserves are left out.
- Not on this page: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Trend-Arlington’s climate
How warm does Trend-Arlington get in summer?
Summer peaks in July: a typical afternoon reaches 26.7°C.
How cold does Trend-Arlington get in winter?
A typical January night falls to −14.0°C, the year’s low point.
How much rain and snow does Trend-Arlington get?
Rain and snow add up to about 938 mm of water a year; June brings the most (95 mm), February the least (52 mm).
How long does snow stay on the ground?
In a normal winter there are about 115 days with at least 1 cm of snow lying.
Are these figures for Trend-Arlington itself?
Close to it: they are ECCC’s 1991–2020 normals for Ottawa (City), just outside Trend-Arlington’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Trend-Arlington →
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).