December weather in Pasco, WA
The average temperature in Pasco in December is 34.1°F (27.3°F–41.0°F). Average precipitation: 1.03 inches.
December is a winter month in Pasco, and is cooler than the annual average of 53.3°F. Daily temperatures swing about 13.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 26m. For travel, December is cold.
Avg High
41.0°F
Avg Low
27.3°F
Precipitation
1.03 in
Daylight
8h 26m
December records in Pasco
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 71.1°F (2021) | 10.2°F (2014) | 0.17 in (2003) |
| December 2 | 62.1°F (2021) | 10.2°F (2014) | 0.19 in (2012) |
| December 3 | 66.9°F (2007) | 13.1°F (2022) | 0.29 in (2023) |
| December 4 | 66.0°F (2007) | 7.2°F (2013) | 0.24 in (2025) |
| December 5 | 57.0°F (2025) | 3.2°F (2013) | 0.21 in (2001) |
| December 6 | 59.0°F (2025) | 7.2°F (2013) | 0.33 in (2007) |
| December 7 | 61.0°F (2025) | 2.1°F (2009) | 0.62 in (2015) |
| December 8 | 69.1°F (2015) | -1.8°F (2009) | 0.08 in (2016) |
| December 9 | 64.9°F (2015) | 2.1°F (2009) | 0.30 in (2025) |
| December 10 | 68.0°F (2025) | -1.8°F (2009) | 0.34 in (1945) |
| December 11 | 64.0°F (2025) | 0.1°F (2009) | 0.27 in (2002) |
| December 12 | 62.1°F (2025) | 9.1°F (2009) | 0.17 in (1998) |
| December 13 | 59.0°F (1998) | 9.1°F (2016) | 0.73 in (2003) |
| December 14 | 64.0°F (2002) | 10.9°F (2000) | 0.55 in (2006) |
| December 15 | 69.1°F (2025) | 3.2°F (2008) | 0.22 in (2009) |
| December 16 | 63.0°F (2025) | -8.9°F (2016) | 0.21 in (2018) |
| December 17 | 63.0°F (2025) | -7.8°F (2016) | 0.37 in (2025) |
| December 18 | 61.0°F (2024) | -3.8°F (2016) | 0.29 in (2025) |
| December 19 | 55.9°F (2020) | 3.2°F (2008) | 0.69 in (2021) |
| December 20 | 64.9°F (2019) | -2.0°F (1998) | 0.17 in (2014) |
| December 21 | 63.0°F (2019) | -2.0°F (1998) | 0.28 in (2005) |
| December 22 | 55.9°F (2014) | -1.8°F (2008) | 0.15 in (2010) |
| December 23 | 59.0°F (2013) | 0.0°F (1998) | 0.32 in (2012) |
| December 24 | 54.0°F (2014) | 10.2°F (2008) | 0.46 in (2014) |
| December 25 | 48.9°F (2005) | 3.2°F (2008) | 0.48 in (2024) |
| December 26 | 57.0°F (2024) | 10.2°F (2008) | 0.38 in (2025) |
| December 27 | 57.0°F (2002) | 14.2°F (2021) | 0.35 in (1945) |
| December 28 | 61.0°F (2011) | 14.2°F (2021) | 0.53 in (2010) |
| December 29 | 59.0°F (1998) | 1.9°F (2003) | 0.35 in (2017) |
| December 30 | 55.0°F (1998) | 3.9°F (2003) | 0.64 in (2005) |
| December 31 | 57.0°F (1998) | -4.9°F (2021) | 0.47 in (2005) |