Regina weather by month
Regina runs from about -12°C in January to 21°C in July, with May the wettest month at 101 mm.
warmest month
July
21°C
coolest month
January
-12°C
wettest month
May
101 mm
worst air month
July
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -12°C | 16 mm | 160 h | 6 |
| February | -5°C | 29 mm | 191 h | 7 |
| March | -5°C | 27 mm | 263 h | 8 |
| April | 7°C | 25 mm | 312 h | 8 |
| May | 11°C | 101 mm | 331 h | 7 |
| June | 15°C | 88 mm | 364 h | 6 |
| July | 21°C | 35 mm | 435 h | 12 |
| August | 20°C | 47 mm | 379 h | 10 |
| September | 17°C | 49 mm | 299 h | 7 |
| October | 8°C | 13 mm | 266 h | 4 |
| November | -5°C | 52 mm | 125 h | 5 |
| December | -10°C | 35 mm | 115 h | 6 |
About 3,240 hours of sun a year. Roughly 54 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 2026-05-24. Full method, licences and the list of sources we rejected are on the methodology page.