Cobourg climate — normals and trends
Cobourg (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.8 °C and it receives 865 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (21.5 °C on average) and the coldest is January (-6.1 °C). Rainfall peaks in April.
Cobourg averages 121 frost days, 2 hot days (≥ 30 °C) and 125 rainy days per year.
Cobourg has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 131 to 111 per year over the period.
The hottest day of the period reached 33.8 °C (on 2 September 1953) and the coldest -31.9 °C (on 23 January 1976).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
CobourgOntario
- coords
- 43.96°, -78.17°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.8°C
Average daily high
11.2°C
Average daily low
4.4°C
Annual rainfall
865mm
Sunshine / day
8.8h
Mean relative humidity
75%
Average peak wind
20.3km/h
Seasonal range
27.6°C
Frost days (< 0 °C)
121 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
108.8 cm
Average feels-like high
8.8 °C
Average feels-like low
1.0 °C
Average peak gust
38.3 km/h
Tropical nights (≥ 20 °C)
15 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.27 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
33.8 °C
2 September 1953
Coldest day
-31.9 °C
23 January 1976
Wettest day
92 mm
9 September 2004
Windiest day
56.6 km/h
15 March 1959
Strongest gust
112.0 km/h
15 October 1954
Hottest feels-like
38.5 °C
1 August 1975
Coldest feels-like
-38.3 °C
4 January 1981
Snowiest day
27.4 cm
11 December 1992
Sunniest day
14.9 h
24 June 2022
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -2.6 °C | 0.0 °C | 42 mm | -21 mm |
| Feb | -2.6 °C | -0.5 °C | 73 mm | +16 mm |
| Mar | 4.8 °C | +2.4 °C | 89 mm | +21 mm |
| Apr | 9.2 °C | +0.3 °C | 64 mm | -15 mm |
| May | 15.0 °C | -0.3 °C | 114 mm | +39 mm |
| Jun | 22.4 °C | +1.0 °C | 31 mm | -41 mm |
| Jul | 26.8 °C | +1.7 °C | 44 mm | -29 mm |
| Aug | 24.6 °C | +0.3 °C | 51 mm | -21 mm |
| Sep | 21.8 °C | +1.7 °C | 32 mm | -46 mm |
| Oct | 15.1 °C | +1.4 °C | 76 mm | -1 mm |
| Nov | 6.2 °C | -1.0 °C | 65 mm | -13 mm |
| Dec | 0.4 °C | -0.7 °C | 102 mm | +28 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Cobourg?
Cobourg has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.8 °C and it receives 865 mm of precipitation per year.
What is the hottest day ever recorded in Cobourg?
The hottest day measured in Cobourg between 1940 and 2025 was 2 September 1953, reaching 33.8 °C.
What is the coldest day in Cobourg?
The coldest day measured in Cobourg between 1940 and 2025 was 23 January 1976, at -31.9 °C.
Does it snow in Cobourg?
Yes. Cobourg gets on average 108.8 cm of snow per year and has around 121 frost days.
Has the climate of Cobourg warmed?
Yes: Cobourg warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Cobourg?
The wettest day measured in Cobourg between 1940 and 2025 was 9 September 2004, with 92 mm of rain in 24 hours.
What was the windiest day in Cobourg?
The windiest day measured in Cobourg between 1940 and 2025 was 15 March 1959, with winds reaching 56.6 km/h.
What is the warmest month in Cobourg?
The warmest month in Cobourg is July (21.5 °C on average); the coldest is January (-6.1 °C).
How much does it rain in Cobourg?
Cobourg receives on average 865 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Cobourg?
Cobourg gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Cobourg?
The heaviest 24-hour snowfall measured in Cobourg between 1940 and 2025 was 11 December 1992, with 27.4 cm.
Are there tropical nights in Cobourg?
Yes: Cobourg has on average 15 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Cobourg?
In Cobourg, between 1940 and 2025, the highest apparent temperature reached 38.5 °C on 1 August 1975, and the lowest was -38.3 °C on 4 January 1981.
Compare Cobourg with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Cobourg