Annual mean
Annual mean of daily highs
Annual mean of daily lows
Mossyrock city, Washington
Official LSAD Designation: Mossyrock city • Census GEOID: 5347315
• Lewis County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Mossyrock city.
Reference Weather Station: MAYFIELD PWR PLT, WA US (ID: USC00455110)
• Located 5.3 miles from community center
• Elevation: 85.3 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 45.0° | 33.1° | 39.1° | 8.06" |
| February | 49.2° | 33.5° | 41.3° | 5.78" |
| March | 54.1° | 35.2° | 44.6° | 6.31" |
| April | 60.0° | 38.7° | 49.3° | 5.45" |
| May | 69.1° | 43.2° | 56.1° | 3.81" |
| June | 72.3° | 47.8° | 60.0° | 2.69" |
| July | 81.1° | 51.4° | 66.3° | 0.91" |
| August | 80.9° | 51.9° | 66.4° | 1.30" |
| September | 74.3° | 48.1° | 61.2° | 2.46" |
| October | 61.7° | 42.7° | 52.2° | 5.39" |
| November | 51.0° | 37.5° | 44.3° | 8.44" |
| December | 44.4° | 33.5° | 38.9° | 8.13" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station MAYFIELD PWR PLT, WA US (ID: USC00455110) • 5.3 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 | Unavailable | Unavailable |
| 2011 | 49.7 | 59.7 | 39.7 |
| 2012 | 51.2 | 61.7 | 40.8 |
| 2013 | 50.5 | 59.8 | 41.3 |
| 2014 | 53.0 | 63.2 | 42.7 |
| 2015 | 53.5 | 64.2 | 42.9 |
| 2016 | 53.1 | 63.0 | 43.2 |
| 2017 | 51.7 | 62.4 | 41.1 |
| 2018 | 52.7 | 63.5 | 41.9 |
| 2019 | 50.9 | 60.8 | 41.0 |
| 2020 | 53.7 | 64.5 | 43.0 |
| 2021 | 52.7 | 62.7 | 42.7 |
| 2022 | 52.4 | 62.7 | 42.2 |
| 2023 | 52.8 | 63.4 | 42.4 |
| 2024 | 52.6 | 62.3 | 42.8 |
| 2025 | 53.9 | 64.8 | 43.0 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.