Annual mean
Annual mean of daily highs
Annual mean of daily lows
Tri-City CDP, Oregon
Official LSAD Designation: Tri-City CDP • Census GEOID: 4174650
• Douglas County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Tri-City CDP.
Reference Weather Station: RIDDLE, OR US (ID: USC00357169)
• Located 3.9 miles from community center
• Elevation: 207.3 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 52.7° | 36.9° | 44.8° | 4.72" |
| February | 57.1° | 37.2° | 47.2° | 3.35" |
| March | 61.5° | 38.8° | 50.2° | 3.39" |
| April | 66.2° | 41.4° | 53.8° | 2.53" |
| May | 73.6° | 46.6° | 60.1° | 1.86" |
| June | 79.5° | 51.1° | 65.3° | 0.98" |
| July | 88.2° | 55.3° | 71.7° | 0.27" |
| August | 88.8° | 54.0° | 71.4° | 0.28" |
| September | 83.6° | 48.5° | 66.0° | 0.71" |
| October | 71.0° | 43.3° | 57.1° | 2.25" |
| November | 57.9° | 40.7° | 49.3° | 4.57" |
| December | 50.6° | 36.7° | 43.7° | 6.17" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station RIDDLE, OR US (ID: USC00357169) • 3.9 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 | 55.9 | 67.3 | 44.5 |
| 2011 | 55.1 | 66.6 | 43.5 |
| 2012 | 56.3 | 68.5 | 44.0 |
| 2013 | 56.4 | 68.7 | 44.1 |
| 2014 | 59.0 | 71.9 | 46.0 |
| 2015 | 58.8 | 71.9 | 45.8 |
| 2016 | 58.0 | 70.3 | 45.6 |
| 2017 | 56.7 | 69.0 | 44.5 |
| 2018 | 56.9 | 70.2 | 43.7 |
| 2019 | 56.2 | 68.5 | 43.8 |
| 2020 | 57.1 | 70.2 | 43.9 |
| 2021 | 57.3 | 70.6 | 44.0 |
| 2022 | 57.1 | 70.2 | 43.9 |
| 2023 | 56.8 | 69.6 | 44.1 |
| 2024 | 57.4 | 70.3 | 44.5 |
| 2025 | Unavailable | Unavailable | Unavailable |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.