Rouyn-Noranda climate — normals and trends
Rouyn-Noranda (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 2.1 °C and it receives 878 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 (17.7 °C on average) and the coldest is January (-15.7 °C). Rainfall peaks in September.
Rouyn-Noranda averages 188 frost days, 2 hot days (≥ 30 °C) and 141 rainy days per year.
Rouyn-Noranda has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 192 to 184 per year over the period.
The hottest day of the period reached 35.9 °C (on 12 July 2005) and the coldest -42.7 °C (on 20 December 1941).
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
Rouyn-NorandaQuebec
- coords
- 48.24°, -79.02°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.1°C
Average daily high
6.7°C
Average daily low
-2.6°C
Annual rainfall
878mm
Sunshine / day
7.7h
Mean relative humidity
75%
Average peak wind
16.6km/h
Seasonal range
33.4°C
Frost days (< 0 °C)
188 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
141 d/yr
Annual snowfall
182.6 cm
Average feels-like high
3.6 °C
Average feels-like low
-6.5 °C
Average peak gust
37.7 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
12.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.24 · 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
35.9 °C
12 July 2005
Coldest day
-42.7 °C
20 December 1941
Wettest day
76 mm
29 June 1957
Windiest day
39.3 km/h
20 November 1985
Strongest gust
106.6 km/h
31 October 2009
Hottest feels-like
40.3 °C
31 July 1975
Coldest feels-like
-48.3 °C
20 December 1941
Snowiest day
23.9 cm
3 November 1999
Sunniest day
15.6 h
15 June 2024
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 | -10.6 °C | +0.5 °C | 44 mm | -6 mm |
| Feb | -9.6 °C | -0.8 °C | 50 mm | +10 mm |
| Mar | -1.5 °C | +0.7 °C | 119 mm | +64 mm |
| Apr | 5.1 °C | -0.8 °C | 91 mm | +26 mm |
| May | 15.8 °C | +1.1 °C | 48 mm | -26 mm |
| Jun | 21.4 °C | +1.1 °C | 121 mm | +34 mm |
| Jul | 23.2 °C | +0.6 °C | 147 mm | +53 mm |
| Aug | 22.6 °C | +1.5 °C | 65 mm | -25 mm |
| Sep | 18.3 °C | +2.1 °C | 32 mm | -73 mm |
| Oct | 12.5 °C | +3.5 °C | 67 mm | -20 mm |
| Nov | -0.5 °C | -1.1 °C | 93 mm | +15 mm |
| Dec | -7.7 °C | -0.3 °C | 106 mm | +50 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 Rouyn-Noranda?
Rouyn-Noranda has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 2.1 °C and it receives 878 mm of precipitation per year.
What is the hottest day ever recorded in Rouyn-Noranda?
The hottest day measured in Rouyn-Noranda between 1940 and 2025 was 12 July 2005, reaching 35.9 °C.
What is the coldest day in Rouyn-Noranda?
The coldest day measured in Rouyn-Noranda between 1940 and 2025 was 20 December 1941, at -42.7 °C.
Does it snow in Rouyn-Noranda?
Yes. Rouyn-Noranda gets on average 182.6 cm of snow per year and has around 188 frost days.
Has the climate of Rouyn-Noranda warmed?
Yes: Rouyn-Noranda warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rouyn-Noranda?
The wettest day measured in Rouyn-Noranda between 1940 and 2025 was 29 June 1957, with 76 mm of rain in 24 hours.
What was the windiest day in Rouyn-Noranda?
The windiest day measured in Rouyn-Noranda between 1940 and 2025 was 20 November 1985, with winds reaching 39.3 km/h.
What is the warmest month in Rouyn-Noranda?
The warmest month in Rouyn-Noranda is July (17.7 °C on average); the coldest is January (-15.7 °C).
How much does it rain in Rouyn-Noranda?
Rouyn-Noranda receives on average 878 mm of precipitation per year, spread over about 141 rainy days.
Is it sunny in Rouyn-Noranda?
Rouyn-Noranda gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Rouyn-Noranda?
The heaviest 24-hour snowfall measured in Rouyn-Noranda between 1940 and 2025 was 3 November 1999, with 23.9 cm.
Are there tropical nights in Rouyn-Noranda?
Yes: Rouyn-Noranda has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Rouyn-Noranda?
In Rouyn-Noranda, between 1940 and 2025, the highest apparent temperature reached 40.3 °C on 31 July 1975, and the lowest was -48.3 °C on 20 December 1941.
Compare Rouyn-Noranda with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rouyn-Noranda