Annual mean
Annual mean of daily highs
Annual mean of daily lows
Umatilla city, Oregon
Official LSAD Designation: Umatilla city • Census GEOID: 4175650
• Umatilla County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Umatilla city.
Reference Weather Station: MCNARY DAM #2, OR US (ID: USC00355392)
• Located 2.0 miles from community center
• Elevation: 110.0 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 41.1° | 30.0° | 35.6° | 0.88" |
| February | 46.2° | 31.7° | 38.9° | 0.70" |
| March | 55.5° | 35.2° | 45.4° | 0.76" |
| April | 62.9° | 41.5° | 52.2° | 0.70" |
| May | 71.9° | 48.1° | 60.0° | 0.75" |
| June | 79.2° | 54.3° | 66.7° | 0.45" |
| July | 88.5° | 60.5° | 74.5° | 0.19" |
| August | 87.7° | 60.8° | 74.3° | 0.25" |
| September | 78.0° | 53.4° | 65.7° | 0.40" |
| October | 64.3° | 44.1° | 54.2° | 0.74" |
| November | 50.6° | 35.3° | 42.9° | 0.87" |
| December | 41.2° | 30.7° | 36.0° | 1.22" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station MCNARY DAM #2, OR US (ID: USC00355392) • 2.0 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 | 53.7 | 63.2 | 44.2 |
| 2011 | 52.5 | 62.4 | 42.6 |
| 2012 | 53.9 | 64.0 | 43.8 |
| 2013 | 53.7 | 63.8 | 43.5 |
| 2014 | 54.8 | 64.6 | 45.0 |
| 2015 | Unavailable | Unavailable | Unavailable |
| 2016 | 55.3 | 65.1 | 45.5 |
| 2017 | 52.6 | 62.2 | 43.1 |
| 2018 | 54.7 | 64.5 | 44.9 |
| 2019 | 52.5 | 61.8 | 43.2 |
| 2020 | 54.9 | 64.9 | 45.0 |
| 2021 | 54.9 | 65.7 | 44.1 |
| 2022 | 52.9 | 62.4 | 43.3 |
| 2023 | 54.5 | 64.1 | 44.8 |
| 2024 | 54.6 | 64.3 | 44.8 |
| 2025 | 55.6 | 65.5 | 45.8 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.