Quebec City weather by month
Quebec City runs from about -8°C in January to 21°C in July, with June the wettest month at 187 mm.
warmest month
July
21°C
coolest month
January
-8°C
wettest month
June
187 mm
worst air month
February
15 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -8°C | 67 mm | 144 h | 10 |
| February | -7°C | 51 mm | 202 h | 15 |
| March | -1°C | 102 mm | 199 h | 10 |
| April | 5°C | 74 mm | 244 h | 10 |
| May | 13°C | 122 mm | 320 h | 8 |
| June | 18°C | 187 mm | 315 h | 9 |
| July | 21°C | 140 mm | 345 h | 12 |
| August | 19°C | 185 mm | 300 h | 11 |
| September | 16°C | 64 mm | 287 h | 10 |
| October | 9°C | 66 mm | 223 h | 7 |
| November | 3°C | 98 mm | 130 h | 7 |
| December | -7°C | 110 mm | 133 h | 9 |
About 2,842 hours of sun a year. Roughly 127 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-23. Full method, licences and the list of sources we rejected are on the methodology page.