Vernonia, OR
Climate overview — based on NOAA 1991-2020 normals from VERNONIA #2, OR US.
Year-round temperatures (°F)
Climate summary
Vernonia has an annual average temperature of 49.4°F with about 48 inches of precipitation per year and 1.1 inches of snow. The warmest month is August (average high 78.2°F), and the coldest is February (average low 30.9°F). December is typically the wettest month (8.33 in) and July the driest (0.39 in). Snow typically falls from December through February.
Best time to visit Vernonia
Full guide →Climate change signal
All-time records →93 of 366 (25.4%) of Vernonia'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.
| 1960s | 25 | |
| 1970s | 54 | |
| 1980s | 79 | |
| 1990s | 52 | |
| 2000s | 48 | |
| 2010s | 50 | |
| 2020s | 58 |
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 | 45.7°F | 31.6°F | 38.7°F | 6.94 in | 0.3 in | 20 |
| February | 49.4°F | 30.9°F | 40.2°F | 5.34 in | 0.6 in | 17 |
| March | 53.6°F | 33.5°F | 43.5°F | 5.30 in | — | 20 |
| April | 58.6°F | 35.6°F | 47.1°F | 3.74 in | — | 17 |
| May | 65.5°F | 40.3°F | 52.9°F | 2.39 in | — | 12 |
| June | 69.9°F | 44.4°F | 57.2°F | 1.44 in | — | 10 |
| July | 77.3°F | 47.2°F | 62.3°F | 0.39 in | — | 4 |
| August | 78.2°F | 46.9°F | 62.5°F | 0.55 in | — | 4 |
| September | 73.1°F | 42.9°F | 58.0°F | 1.79 in | — | 8 |
| October | 61.4°F | 38.3°F | 49.8°F | 4.12 in | — | 15 |
| November | 50.6°F | 34.2°F | 42.4°F | 7.70 in | — | 20 |
| December | 44.3°F | 31.3°F | 37.8°F | 8.33 in | 0.2 in | 20 |
Climate twins of Vernonia
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).