Homer weather by month
Homer runs from about -6°C in January to 12°C in July, with December the wettest month at 244 mm.
warmest month
July
12°C
coolest month
January
-6°C
wettest month
December
244 mm
worst air month
July
4 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -6°C | 90 mm | 114 h | 1 |
| February | -3°C | 117 mm | 118 h | 2 |
| March | -2°C | 87 mm | 178 h | 3 |
| April | 1°C | 124 mm | 259 h | 3 |
| May | 6°C | 123 mm | 217 h | 2 |
| June | 11°C | 25 mm | 332 h | 3 |
| July | 12°C | 123 mm | 313 h | 4 |
| August | 12°C | 205 mm | 264 h | 4 |
| September | 10°C | 170 mm | 188 h | 3 |
| October | 4°C | 173 mm | 195 h | 2 |
| November | -2°C | 120 mm | 122 h | 1 |
| December | 2°C | 244 mm | 31 h | 1 |
About 2,331 hours of sun a year. Roughly 160 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 2026-05-27. Full method, licences and the list of sources we rejected are on the methodology page.