Whitehorse weather by month
Whitehorse runs from about -14°C in January to 16°C in July, with July the wettest month at 86 mm.
warmest month
July
16°C
coolest month
January
-14°C
wettest month
July
86 mm
worst air month
July
6 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -14°C | 45 mm | 73 h | 1 |
| February | -11°C | 14 mm | 173 h | 2 |
| March | -4°C | 14 mm | 303 h | 2 |
| April | 2°C | 15 mm | 379 h | 3 |
| May | 7°C | 29 mm | 377 h | 3 |
| June | 14°C | 43 mm | 417 h | 4 |
| July | 16°C | 86 mm | 360 h | 6 |
| August | 14°C | 70 mm | 346 h | 4 |
| September | 8°C | 55 mm | 265 h | 2 |
| October | -1°C | 78 mm | 143 h | 1 |
| November | -10°C | 32 mm | 97 h | 1 |
| December | -9°C | 21 mm | 50 h | 1 |
About 2,983 hours of sun a year. Roughly 51 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.