Fargo weather by month
Fargo runs from about -9°C in January to 23°C in July, with May the wettest month at 171 mm.
warmest month
July
23°C
coolest month
January
-9°C
wettest month
May
171 mm
worst air month
July
10 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -9°C | 5 mm | 163 h | 7 |
| February | -2°C | 24 mm | 218 h | 8 |
| March | -1°C | 17 mm | 240 h | 8 |
| April | 7°C | 71 mm | 257 h | 7 |
| May | 14°C | 171 mm | 339 h | 6 |
| June | 19°C | 67 mm | 357 h | 5 |
| July | 23°C | 150 mm | 415 h | 10 |
| August | 21°C | 121 mm | 334 h | 8 |
| September | 20°C | 71 mm | 343 h | 6 |
| October | 12°C | 8 mm | 272 h | 4 |
| November | 1°C | 62 mm | 135 h | 4 |
| December | -7°C | 18 mm | 108 h | 8 |
About 3,181 hours of sun a year. Roughly 79 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.