Charlotte weather by month
Charlotte runs from about 6°C in January to 27°C in July, with September the wettest month at 245 mm.
warmest month
July
27°C
coolest month
January
6°C
wettest month
September
245 mm
worst air month
February
16 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 6°C | 131 mm | 216 h | 13 |
| February | 8°C | 60 mm | 240 h | 16 |
| March | 12°C | 156 mm | 258 h | 10 |
| April | 17°C | 57 mm | 300 h | 8 |
| May | 21°C | 94 mm | 327 h | 9 |
| June | 26°C | 30 mm | 380 h | 10 |
| July | 27°C | 133 mm | 349 h | 13 |
| August | 25°C | 168 mm | 359 h | 13 |
| September | 22°C | 245 mm | 255 h | 12 |
| October | 17°C | 3 mm | 311 h | 7 |
| November | 13°C | 72 mm | 235 h | 9 |
| December | 7°C | 98 mm | 221 h | 14 |
About 3,451 hours of sun a year. Roughly 125 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.