Photo: Drozwik Drones · CC BY 3.0Cobourg gets fewer frosts than 85% of Canadian towns
Peak summer warmth arrives in July, with afternoons near 23.6°C. From frozen January to warm July, readings climb 32°C. By July afternoons alone, it runs cooler than 72% of Canadian towns. Picnics, hikes and garden evenings come into their own from June to September, with highs of 20–24°C.
Figures: ECCC’s 1991–2020 normals for Cobourg (2.3 km south).
A year in Cobourg at a glance
Each month’s typical high and low, in °C.
What stands out about Cobourg’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Cobourg feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
126 frost days a year
Frost comes from October to April, most of all in January (about 27 nights).
Frost days by month
Average days at 0°C or below
Rain and melted snow: about 840 mm a year
June is the wettest month and February the driest. Some 114 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
ECCC’s Cobourg normals leave out precipitation and snow; both come from Peterborough here, 32 km away.
Snowfall: about 158 cm in a normal year
Expect snow from October to April, with about 45 cm in January, the snowiest month.
Snowfall by month
Centimetres
Living with Cobourg’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Jul, Aug and Sep.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 18 days a year.
Summer brings about 33 days when the humidex passes 30.
Thirty years of averages say little about one bad storm; Cobourg’s hazards page does.
Flood & hazards →ECCC’s normals location: Cobourg
Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for Cobourg.
| Distance from the town | 2.3 km south |
| Station altitude | 78 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Peterborough, 32 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 | Peterborough, 32 km |
How Cobourg 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
Nearby places read from a different ECCC location (places on Cobourg’s own would show the same figures). Cobourg has few close neighbours with figures, so the list reaches 29–42 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Cobourg | 23.6°C | −8.7°C | 840 mm |
| Otonabee-South Monaghan 29 km · Peterborough | 26.6°C 3.0°C warmer | −12.8°C 4.1°C colder | 840 mm |
| Brighton 37 km · Trenton | 26.5°C 2.9°C warmer | −11.2°C 2.5°C colder | 941 mm |
| Bowmanville 42 km · Oshawa | 25.7°C 2.1°C warmer | −8.9°C about the same | 906 mm |
Cobourg 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 | 67 mm | 45 cm |
| February | −0.4°C | −8.1°C | −4.3°C | 42 mm | 27 cm |
| March | 3.4°C | −3.9°C | −0.3°C | 54 mm | 28 cm |
| April | 9.6°C | 2.0°C | 5.8°C | 73 mm | 7 cm |
| May | 15.4°C | 7.4°C | 11.4°C | 79 mm | 0 cm |
| June | 20.4°C | 12.4°C | 16.4°C | 88 mm | 0 cm |
| July | 23.6°C | 15.9°C | 19.8°C | 69 mm | 0 cm |
| August | 23.6°C | 15.8°C | 19.7°C | 78 mm | 0 cm |
| September | 20.4°C | 12.2°C | 16.3°C | 76 mm | 0 cm |
| October | 13.3°C | 6.0°C | 9.6°C | 75 mm | 1 cm |
| November | 7.2°C | 0.3°C | 3.8°C | 76 mm | 17 cm |
| December | 1.8°C | −4.8°C | −1.5°C | 64 mm | 33 cm |
| Year | 11.4°C | 3.9°C | 7.7°C | 840 mm | 158 cm |
March has run from −25.2°C to 18.8°C in thirty years
The month to count on least is January: one year in three its average strays more than 2.8°C from −4.9°C. June moves least, typically by 0.9°C.
Where Cobourg’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Cobourg, the closest ECCC location with twelve months of temperature normals.
- Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
- 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: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Cobourg’s climate
How warm does Cobourg get in summer?
Peak warmth comes in July, at about 23.6°C by mid-afternoon.
How cold does Cobourg get in winter?
A typical January night falls to −8.7°C, the year’s low point.
How much rain and snow does Cobourg get?
June is the wettest month at 88 mm and February the driest at 42 mm, for 840 mm over the year.
Are these figures for Cobourg itself?
Almost: ECCC’s Cobourg location, which gives these figures, lies a short way outside Cobourg.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Cobourg →
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).