Rimouski climate — normals and trends
Rimouski (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 3.3 °C and it receives 969 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 August (15.9 °C on average) and the coldest is January (-10.6 °C). Rainfall peaks in October.
Rimouski averages 157 frost days, 0 hot days (≥ 30 °C) and 136 rainy days per year.
Rimouski has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 173 to 141 per year over the period.
The hottest day of the period reached 27.9 °C (on 5 August 2012) and the coldest -32.9 °C (on 18 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
RimouskiQuebec
- coords
- 48.45°, -68.52°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.3°C
Average daily high
6.0°C
Average daily low
0.6°C
Annual rainfall
969mm
Sunshine / day
8.5h
Mean relative humidity
77%
Average peak wind
22.6km/h
Seasonal range
26.5°C
Frost days (< 0 °C)
157 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
136 d/yr
Annual snowfall
218.6 cm
Average feels-like high
2.6 °C
Average feels-like low
-3.7 °C
Average peak gust
38.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
13.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.49 · 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
27.9 °C
5 August 2012
Coldest day
-32.9 °C
18 January 1982
Wettest day
71 mm
25 October 1951
Windiest day
58.3 km/h
18 December 2000
Strongest gust
119.2 km/h
12 February 1981
Hottest feels-like
31.1 °C
18 July 2005
Coldest feels-like
-42.2 °C
17 January 1982
Snowiest day
28.8 cm
17 March 2007
Sunniest day
15.3 h
20 June 2023
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -5.4 °C | +2.1 °C | 67 mm | +0 mm |
| Feb | -6.1 °C | +0.4 °C | 75 mm | +16 mm |
| Mar | 0.2 °C | +1.9 °C | 109 mm | +37 mm |
| Apr | 4.9 °C | +1.1 °C | 109 mm | +30 mm |
| May | 11.3 °C | +1.6 °C | 150 mm | +64 mm |
| Jun | 16.8 °C | +2.0 °C | 111 mm | +26 mm |
| Jul | 19.6 °C | +1.2 °C | 110 mm | +26 mm |
| Aug | 19.7 °C | +1.3 °C | 43 mm | -37 mm |
| Sep | 16.0 °C | +1.4 °C | 32 mm | -57 mm |
| Oct | 11.1 °C | +2.2 °C | 72 mm | -24 mm |
| Nov | 3.6 °C | +0.8 °C | 94 mm | +3 mm |
| Dec | -4.2 °C | -0.5 °C | 73 mm | -9 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 Rimouski?
Rimouski has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 3.3 °C and it receives 969 mm of precipitation per year.
What is the hottest day ever recorded in Rimouski?
The hottest day measured in Rimouski between 1940 and 2025 was 5 August 2012, reaching 27.9 °C.
What is the coldest day in Rimouski?
The coldest day measured in Rimouski between 1940 and 2025 was 18 January 1982, at -32.9 °C.
Does it snow in Rimouski?
Yes. Rimouski gets on average 218.6 cm of snow per year and has around 157 frost days.
Has the climate of Rimouski warmed?
Yes: Rimouski warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rimouski?
The wettest day measured in Rimouski between 1940 and 2025 was 25 October 1951, with 71 mm of rain in 24 hours.
What was the windiest day in Rimouski?
The windiest day measured in Rimouski between 1940 and 2025 was 18 December 2000, with winds reaching 58.3 km/h.
What is the warmest month in Rimouski?
The warmest month in Rimouski is August (15.9 °C on average); the coldest is January (-10.6 °C).
How much does it rain in Rimouski?
Rimouski receives on average 969 mm of precipitation per year, spread over about 136 rainy days.
Is it sunny in Rimouski?
Rimouski gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Rimouski?
The heaviest 24-hour snowfall measured in Rimouski between 1940 and 2025 was 17 March 2007, with 28.8 cm.
Are there tropical nights in Rimouski?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Rimouski.
What was the most extreme apparent temperature in Rimouski?
In Rimouski, between 1940 and 2025, the highest apparent temperature reached 31.1 °C on 18 July 2005, and the lowest was -42.2 °C on 17 January 1982.
Compare Rimouski with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rimouski