Annual mean
Annual mean of daily highs
Annual mean of daily lows
Vernonia city, Oregon
Official LSAD Designation: Vernonia city • Census GEOID: 4177250
• Columbia County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Vernonia city.
Reference Weather Station: VERNONIA #2, OR US (ID: USC00358884)
• Located 0.3 miles from community center
• Elevation: 190.5 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 45.7° | 31.6° | 38.7° | 6.94" |
| February | 49.4° | 30.9° | 40.2° | 5.34" |
| March | 53.6° | 33.5° | 43.5° | 5.30" |
| April | 58.6° | 35.6° | 47.1° | 3.74" |
| May | 65.5° | 40.3° | 52.9° | 2.39" |
| June | 69.9° | 44.4° | 57.2° | 1.44" |
| July | 77.3° | 47.2° | 62.3° | 0.39" |
| August | 78.2° | 46.9° | 62.5° | 0.55" |
| September | 73.1° | 42.9° | 58.0° | 1.79" |
| October | 61.4° | 38.3° | 49.8° | 4.12" |
| November | 50.6° | 34.2° | 42.4° | 7.70" |
| December | 44.3° | 31.3° | 37.8° | 8.33" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station VERNONIA #2, OR US (ID: USC00358884) • 0.3 miles from community center .
This is the same reference station used for monthly normals.
Source: NOAA NCEI Global Summary of the Year.
Annual temperature data table (°F)
| Year | Annual mean (°F) | Annual mean of daily highs (°F) | Annual mean of daily lows (°F) |
|---|---|---|---|
| 2010 | Unavailable | 58.9 | Unavailable |
| 2011 | 47.9 | 57.8 | 38.1 |
| 2012 | 49.5 | 59.8 | 39.2 |
| 2013 | Unavailable | Unavailable | Unavailable |
| 2014 | 50.9 | 62.1 | 39.7 |
| 2015 | 51.9 | 63.9 | 40.0 |
| 2016 | 51.4 | 61.9 | 40.7 |
| 2017 | 49.8 | 60.9 | 38.8 |
| 2018 | 50.5 | 62.2 | 38.9 |
| 2019 | 49.4 | 60.4 | 38.4 |
| 2020 | 50.5 | 61.3 | 39.7 |
| 2021 | 50.0 | 61.0 | 39.0 |
| 2022 | 50.1 | 61.7 | 38.5 |
| 2023 | 50.0 | 61.3 | 38.6 |
| 2024 | 50.1 | 61.1 | 39.0 |
| 2025 | 50.6 | 62.4 | 38.9 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.