New York weather by month
New York runs from about 1°C in January to 26°C in July, with March the wettest month at 226 mm.
warmest month
July
26°C
coolest month
January
1°C
wettest month
March
226 mm
worst air month
February
23 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 1°C | 153 mm | 145 h | 13 |
| February | 2°C | 67 mm | 228 h | 23 |
| March | 7°C | 226 mm | 245 h | 14 |
| April | 11°C | 103 mm | 267 h | 11 |
| May | 17°C | 101 mm | 295 h | 13 |
| June | 23°C | 106 mm | 373 h | 14 |
| July | 26°C | 117 mm | 358 h | 17 |
| August | 23°C | 201 mm | 338 h | 16 |
| September | 20°C | 29 mm | 257 h | 14 |
| October | 15°C | 8 mm | 316 h | 8 |
| November | 10°C | 80 mm | 232 h | 12 |
| December | 2°C | 101 mm | 197 h | 12 |
About 3,251 hours of sun a year. Roughly 130 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 2026-05-22. Full method, licences and the list of sources we rejected are on the methodology page.