Annual mean
Annual mean of daily highs
Annual mean of daily lows
Pasco city, Washington
Official LSAD Designation: Pasco city • Census GEOID: 5353545
• Franklin County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Pasco city.
Reference Weather Station: PASCO TRI CITIES AP, WA US (ID: USW00024163)
• Located 0.2 miles from community center
• Elevation: 124.1 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 41.4° | 27.8° | 34.6° | 1.03" |
| February | 48.6° | 28.2° | 38.4° | 0.63" |
| March | 58.6° | 33.1° | 45.8° | 0.69" |
| April | 67.0° | 38.4° | 52.7° | 0.66" |
| May | 76.5° | 46.3° | 61.4° | 0.71" |
| June | 83.1° | 52.6° | 67.8° | 0.61" |
| July | 92.5° | 56.9° | 74.7° | 0.15" |
| August | 90.7° | 55.7° | 73.2° | 0.27" |
| September | 80.9° | 47.6° | 64.2° | 0.31" |
| October | 65.8° | 38.4° | 52.1° | 0.66" |
| November | 49.9° | 31.9° | 40.9° | 0.87" |
| December | 41.0° | 27.3° | 34.1° | 1.03" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station PASCO TRI CITIES AP, WA US (ID: USW00024163) • 0.2 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 | 53.3 | 65.8 | 40.7 |
| 2011 | 52.2 | 65.2 | 39.1 |
| 2012 | 53.9 | 66.6 | 41.1 |
| 2013 | 52.9 | 66.0 | 39.8 |
| 2014 | 54.6 | 67.3 | 41.9 |
| 2015 | 55.6 | 69.1 | 42.2 |
| 2016 | 54.8 | 67.7 | 41.8 |
| 2017 | 52.2 | 64.8 | 39.6 |
| 2018 | 54.2 | 67.5 | 41.0 |
| 2019 | 52.5 | 64.6 | 40.3 |
| 2020 | 55.5 | 69.2 | 41.7 |
| 2021 | 56.0 | 69.5 | 42.5 |
| 2022 | 53.6 | 66.3 | 41.0 |
| 2023 | 54.8 | 67.5 | 42.0 |
| 2024 | 55.0 | 68.0 | 41.8 |
| 2025 | 55.1 | 68.2 | 42.0 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.