Photo: Dillan Payne · CC BY-SA 2.0Colborne gets less snow than 81% of Canadian towns: about 115 cm a year
Midwinter brings lows of about −9.1°C. The seasons are far apart: from a winter night to a summer afternoon the average spans 36°C. Only about 139 nights a year bring a frost, fewer than in 73% of Canadian towns. The furnace earns its keep from October to April, the months that average under 10°C.
Figures: ECCC’s 1991–2020 normals for Hamilton (13 km south).
A year in Colborne at a glance
Each month’s typical high and low, in °C.
What stands out about Colborne’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Colborne feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 139 days, 20°C on 123
From October to May frost is routine, and in January it comes on almost every night. About 13 days a year top 30°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
902 mm of precipitation in a typical year
The most falls in July, the least in February. About 114 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 115 cm in a normal year
Snow falls from November to April, most of all in January (about 32 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Snowfall: Toronto Pearson (Airport), 52 km away (Hamilton records no complete year of it).
Heating a home in Colborne
92% 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. A house here needs less heating than 77% of Canadian towns.
Living with Colborne’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Tender plants are usually safe from around 1 May until frost returns near 12 October: about 164 days.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul, Aug and Sep.
Parks & trails →Wind chill falls below −20 on about 20 days a year: cover skin and dress in layers.
Humid heat, a humidex over 30, comes on about 59 days a year.
For blizzards, floods and wildfire, turn to Colborne’s hazards page.
Flood & hazards →ECCC’s normals location: Hamilton
Behind the 1991–2020 normals for Hamilton are 2 stations, which ECCC combines into one record.
| Distance from the town | 13 km south |
| Station altitude | 238 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | Toronto Pearson (Airport), 52 km |
| Coldest reading, 1991–2020 | −30.0°C |
| Hottest reading, 1991–2020 | 36.4°C |
| Average wind | 16.0 km/h on average, most often from the south-west |
| Next-nearest location | Burlington Piers, 14 km |
How Colborne 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
The nearest places on a normals location of their own: those that share Colborne’s would only repeat its figures. Colborne has few close neighbours with figures, so the list reaches 10–28 km out.
Colborne 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 | −1.4°C | −9.1°C | −5.3°C | 73 mm | 32 cm |
| February | −0.9°C | −9.2°C | −5.0°C | 53 mm | 28 cm |
| March | 4.7°C | −4.4°C | 0.2°C | 69 mm | 17 cm |
| April | 11.8°C | 1.3°C | 6.5°C | 81 mm | 5 cm |
| May | 18.9°C | 7.3°C | 13.1°C | 81 mm | under 1 cm |
| June | 24.2°C | 12.8°C | 18.5°C | 78 mm | 0 cm |
| July | 26.6°C | 15.2°C | 20.9°C | 98 mm | 0 cm |
| August | 25.6°C | 14.5°C | 20.1°C | 67 mm | 0 cm |
| September | 21.7°C | 10.5°C | 16.1°C | 74 mm | 0 cm |
| October | 14.5°C | 4.8°C | 9.7°C | 84 mm | under 1 cm |
| November | 7.7°C | −0.2°C | 3.8°C | 78 mm | 9 cm |
| December | 1.5°C | −5.4°C | −1.9°C | 67 mm | 24 cm |
| Year | 12.9°C | 3.2°C | 8.1°C | 902 mm | 115 cm |
January varies most from one year to the next (3.0°C), June least
Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −24.6°C in 2003 to 26.8°C in 2012.
Where Colborne’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Hamilton, the nearest location with a full year of temperatures.
- Other locations: a location missing months of precipitation or snow is filled from the nearest that has them all, never mixed month by month.
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- 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 Colborne’s climate
How warm does Colborne get in summer?
Midsummer means July, with afternoons near 26.6°C on a typical day.
How cold does Colborne get in winter?
A typical February night falls to −9.2°C, the year’s low point.
How much rain and snow does Colborne get?
Precipitation totals 902 mm a year, with July the wettest month (98 mm) and February the driest (53 mm).
How long does snow stay on the ground?
About 82 days a year count as snow-covered, with 1 cm or more.
Are these figures for Colborne itself?
Close to it: they are ECCC’s 1991–2020 normals for Hamilton, just outside Colborne’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Colborne →
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).