Seneca, OR
Climate overview — based on NOAA 1991-2020 normals from SENECA, OR US.
Year-round temperatures (°F)
Climate summary
Seneca has an annual average temperature of 40.5°F with about 13.7 inches of precipitation per year. The warmest month is July (average high 82.1°F), and the coldest is January (average low 11.1°F). December is typically the wettest month (1.82 in) and August the driest (0.38 in).
Best time to visit Seneca
Full guide →Climate change signal
All-time records →36 of 366 (9.8%) of Seneca's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1900s | 0 | |
| 1910s | 1 | |
| 1930s | 101 | |
| 1940s | 30 | |
| 1950s | 32 | |
| 1960s | 36 | |
| 1970s | 20 | |
| 1980s | 32 | |
| 1990s | 36 | |
| 2000s | 29 | |
| 2010s | 26 | |
| 2020s | 23 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 35.9°F | 11.1°F | 23.5°F | 1.58 in | — | 12 |
| February | 40.0°F | 13.6°F | 26.8°F | 1.01 in | — | 10 |
| March | 46.3°F | 19.9°F | 33.1°F | 1.23 in | — | 11 |
| April | 52.6°F | 25.1°F | 38.8°F | 1.18 in | — | 11 |
| May | 61.8°F | 31.7°F | 46.8°F | 1.71 in | — | 10 |
| June | 70.0°F | 36.2°F | 53.1°F | 1.19 in | — | 7 |
| July | 82.1°F | 38.5°F | 60.3°F | 0.53 in | — | 4 |
| August | 81.9°F | 34.9°F | 58.4°F | 0.38 in | — | 3 |
| September | 73.4°F | 27.3°F | 50.3°F | 0.53 in | — | 4 |
| October | 59.6°F | 21.4°F | 40.5°F | 1.07 in | — | 8 |
| November | 44.4°F | 17.1°F | 30.8°F | 1.44 in | — | 12 |
| December | 35.7°F | 11.1°F | 23.4°F | 1.82 in | — | 13 |
Climate twins of Seneca
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).