Photo: Dillan Payne · CC BY-SA 2.0Ice rarely forms: Colborne sees fewer frosts than 85% of Canadian towns
High summer brings afternoon highs near 23.6°C. Seasons differ by 32°C, from the coldest nights to the warmest afternoons. By July afternoons alone, it runs cooler than 72% of Canadian towns. The furnace earns its keep from October to April, the months that average under 10°C.
Borrowed figures: Colborne has no normals station, so these come from Cobourg, 26 km west.
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
Each season’s and each month’s usual high and low, 1991–2020.
126 frost days a year
The frost season runs October to April, peaking in January at about 27 nights.
Frost days by month
Average days at 0°C or below
941 mm of precipitation in a typical year
September brings the most rain and snow; February, the least. Some 116 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Cobourg publishes no full year of precipitation or snowfall, so these figures, and the snow below, come from Trenton, 29 km away.
155 cm of snow in a typical year
From November to April snow is likely; January is the peak, at about 44 cm.
Snowfall by month
Centimetres
Living with Colborne’s climate
What the normals mean for a garden, a day outside and the depth of winter.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: Jun, Jul, Aug and Sep.
Parks & trails →The wind chill passes −20 on about 18 days in a normal year.
Humid heat, a humidex over 30, comes on about 33 days a year.
Storms, floods and heat waves sit outside these normals; Colborne’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Cobourg
The page’s figures are ECCC’s 1991–2020 normals for Cobourg, one of its 450 normals locations.
| Distance from the town | 26 km west |
| Station altitude | 78 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Trenton, 29 km |
| Coldest reading, 1991–2020 | −27.4°C |
| Hottest reading, 1991–2020 | 34.0°C |
| Average wind | 11.7 km/h on average, most often from the west |
| Next-nearest location | Trenton, 29 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
Places around Colborne whose figures come from another normals location. The nearest places to Colborne with figures are 12–39 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Colborne Cobourg | 23.6°C | −8.7°C | 941 mm |
| Brighton 12 km · Trenton | 26.5°C 2.9°C warmer | −11.2°C 2.5°C colder | 941 mm |
| Otonabee-South Monaghan 37 km · Peterborough | 26.6°C 3.0°C warmer | −12.8°C 4.1°C colder | 840 mm |
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 | −1.1°C | −8.7°C | −4.9°C | 78 mm | 44 cm |
| February | −0.4°C | −8.1°C | −4.3°C | 60 mm | 39 cm |
| March | 3.4°C | −3.9°C | −0.3°C | 64 mm | 22 cm |
| April | 9.6°C | 2.0°C | 5.8°C | 84 mm | 6 cm |
| May | 15.4°C | 7.4°C | 11.4°C | 81 mm | 0 cm |
| June | 20.4°C | 12.4°C | 16.4°C | 83 mm | 0 cm |
| July | 23.6°C | 15.9°C | 19.8°C | 75 mm | 0 cm |
| August | 23.6°C | 15.8°C | 19.7°C | 70 mm | 0 cm |
| September | 20.4°C | 12.2°C | 16.3°C | 92 mm | 0 cm |
| October | 13.3°C | 6.0°C | 9.6°C | 91 mm | 1 cm |
| November | 7.2°C | 0.3°C | 3.8°C | 84 mm | 10 cm |
| December | 1.8°C | −4.8°C | −1.5°C | 77 mm | 33 cm |
| Year | 11.4°C | 3.9°C | 7.7°C | 941 mm | 155 cm |
A March here can run from −25.2°C to 18.8°C
January is the least predictable month: about two years in three its average lands within 2.8°C of the normal, −4.9°C. June is the steadiest, within 0.9°C.
Where Colborne’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Cobourg (the closest location with all twelve months 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: 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 Colborne’s climate
How warm does Colborne get in summer?
Afternoons average 23.6°C in July, the warmest time of year.
How cold does Colborne get in winter?
In January, the coldest month, the typical low is −8.7°C.
How much rain and snow does Colborne get?
A normal year brings 941 mm, snow included as water: September is wettest at 92 mm, February driest at 60 mm.
Are these figures for Colborne itself?
The figures are ECCC’s for Cobourg; Colborne has no normals station.
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).