Asheville weather by month
Asheville runs from about 2°C in January to 23°C in July, with September the wettest month at 289 mm.
warmest month
July
23°C
coolest month
January
2°C
wettest month
September
289 mm
worst air month
February
11 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 2°C | 145 mm | 190 h | 9 |
| February | 6°C | 57 mm | 228 h | 11 |
| March | 9°C | 122 mm | 268 h | 10 |
| April | 13°C | 70 mm | 288 h | 7 |
| May | 18°C | 71 mm | 326 h | 7 |
| June | 22°C | 42 mm | 385 h | 8 |
| July | 23°C | 116 mm | 341 h | 10 |
| August | 22°C | 53 mm | 383 h | 11 |
| September | 19°C | 289 mm | 281 h | 11 |
| October | 13°C | 4 mm | 317 h | 6 |
| November | 10°C | 44 mm | 215 h | 7 |
| December | 4°C | 73 mm | 214 h | 8 |
About 3,436 hours of sun a year. Roughly 108 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.