North Bay climate — normals and trends
North Bay (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 4.8 °C and it receives 912 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 (19.4 °C on average) and the coldest is January (-11.2 °C). Rainfall peaks in September.
North Bay averages 157 frost days, 1 hot days (≥ 30 °C) and 141 rainy days per year.
North Bay has warmed by +1.6 °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 163 to 151 per year over the period.
The hottest day of the period reached 32.7 °C (on 1 August 1975) and the coldest -35.7 °C (on 10 January 1982).
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
North BayOntario
- coords
- 46.32°, -79.47°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.8°C
Average daily high
8.4°C
Average daily low
1.1°C
Annual rainfall
912mm
Sunshine / day
8.1h
Mean relative humidity
78%
Average peak wind
18.7km/h
Seasonal range
30.6°C
Frost days (< 0 °C)
157 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
141 d/yr
Annual snowfall
158.0 cm
Average feels-like high
5.7 °C
Average feels-like low
-2.4 °C
Average peak gust
36.6 km/h
Tropical nights (≥ 20 °C)
4 d/yr
Solar radiation
13.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.26 · 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
32.7 °C
1 August 1975
Coldest day
-35.7 °C
10 January 1982
Wettest day
97 mm
23 June 2024
Windiest day
54.3 km/h
19 January 1949
Strongest gust
110.9 km/h
10 November 1975
Hottest feels-like
38.2 °C
31 July 1975
Coldest feels-like
-42.6 °C
10 January 1982
Snowiest day
25.5 cm
25 February 1965
Sunniest day
15.2 h
14 June 2020
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 | -7.2 °C | +0.1 °C | 49 mm | -9 mm |
| Feb | -6.8 °C | -0.8 °C | 60 mm | +12 mm |
| Mar | 1.6 °C | +2.0 °C | 114 mm | +53 mm |
| Apr | 7.0 °C | +0.3 °C | 97 mm | +27 mm |
| May | 16.1 °C | +0.7 °C | 80 mm | +6 mm |
| Jun | 21.5 °C | +0.7 °C | 109 mm | +23 mm |
| Jul | 24.1 °C | +1.0 °C | 113 mm | +19 mm |
| Aug | 22.6 °C | +0.8 °C | 53 mm | -41 mm |
| Sep | 19.0 °C | +1.7 °C | 42 mm | -56 mm |
| Oct | 13.3 °C | +2.7 °C | 80 mm | -6 mm |
| Nov | 1.7 °C | -1.3 °C | 74 mm | -5 mm |
| Dec | -4.7 °C | -0.8 °C | 91 mm | +27 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 North Bay?
North Bay has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.8 °C and it receives 912 mm of precipitation per year.
What is the hottest day ever recorded in North Bay?
The hottest day measured in North Bay between 1940 and 2025 was 1 August 1975, reaching 32.7 °C.
What is the coldest day in North Bay?
The coldest day measured in North Bay between 1940 and 2025 was 10 January 1982, at -35.7 °C.
Does it snow in North Bay?
Yes. North Bay gets on average 158.0 cm of snow per year and has around 157 frost days.
Has the climate of North Bay warmed?
Yes: North Bay warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in North Bay?
The wettest day measured in North Bay between 1940 and 2025 was 23 June 2024, with 97 mm of rain in 24 hours.
What was the windiest day in North Bay?
The windiest day measured in North Bay between 1940 and 2025 was 19 January 1949, with winds reaching 54.3 km/h.
What is the warmest month in North Bay?
The warmest month in North Bay is July (19.4 °C on average); the coldest is January (-11.2 °C).
How much does it rain in North Bay?
North Bay receives on average 912 mm of precipitation per year, spread over about 141 rainy days.
Is it sunny in North Bay?
North Bay gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.
What is the biggest single-day snowfall in North Bay?
The heaviest 24-hour snowfall measured in North Bay between 1940 and 2025 was 25 February 1965, with 25.5 cm.
Are there tropical nights in North Bay?
Yes: North Bay has on average 4 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in North Bay?
In North Bay, between 1940 and 2025, the highest apparent temperature reached 38.2 °C on 31 July 1975, and the lowest was -42.6 °C on 10 January 1982.
Compare North Bay with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around North Bay