December weather in Washington Terrace, UT
The average temperature in Washington Terrace in December is 29.6°F (22.4°F–36.8°F). Average precipitation: 1.33 inches.
December is a winter month in Washington Terrace, and is cooler than the annual average of 51.7°F. Daily temperatures swing about 14.4°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 9h 3m. For travel, December is cold.
Avg High
36.8°F
Avg Low
22.4°F
Precipitation
1.33 in
Daylight
9h 3m
December records in Washington Terrace
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 55.9°F (1998) | 12.0°F (1948) | 0.18 in (1950) |
| December 2 | 63.0°F (2010) | 14.0°F (2004) | 0.52 in (1951) |
| December 3 | 61.0°F (1998) | 12.2°F (2009) | 1.00 in (1950) |
| December 4 | 55.9°F (2021) | 10.2°F (2013) | 0.39 in (1998) |
| December 5 | 55.9°F (1949) | 5.2°F (2013) | 0.32 in (2019) |
| December 6 | 55.0°F (2014) | 7.2°F (2013) | 0.35 in (2010) |
| December 7 | 55.9°F (2014) | 7.0°F (2005) | 0.76 in (2007) |
| December 8 | 55.0°F (2014) | 3.9°F (1951) | 0.60 in (2004) |
| December 9 | 55.0°F (1950) | -6.9°F (2013) | 0.21 in (1949) |
| December 10 | 59.0°F (2015) | 1.2°F (2013) | 1.16 in (2016) |
| December 11 | 57.9°F (2014) | 2.1°F (2009) | 0.33 in (1948) |
| December 12 | 60.1°F (2014) | 6.3°F (2013) | 0.60 in (2019) |
| December 13 | 54.0°F (2004) | 10.9°F (1951) | 0.76 in (2009) |
| December 14 | 55.9°F (2006) | 7.0°F (1951) | 0.49 in (2015) |
| December 15 | 53.1°F (2006) | 10.0°F (1948) | 0.23 in (1950) |
| December 16 | 51.1°F (2025) | 7.2°F (2013) | 0.78 in (2016) |
| December 17 | 62.1°F (2025) | 8.2°F (2013) | 0.48 in (2020) |
| December 18 | 51.1°F (2024) | 9.0°F (1948) | 1.08 in (1949) |
| December 19 | 54.0°F (2025) | 8.1°F (1951) | 1.01 in (2013) |
| December 20 | 55.9°F (2023) | 1.9°F (1998) | 0.42 in (2007) |
| December 21 | 59.0°F (2025) | 0.0°F (1998) | 0.47 in (2014) |
| December 22 | 57.9°F (2025) | 1.9°F (1998) | 0.91 in (2015) |
| December 23 | 57.9°F (2025) | 0.0°F (1998) | 0.16 in (2017) |
| December 24 | 59.0°F (2025) | -0.9°F (1948) | 0.26 in (2016) |
| December 25 | 57.9°F (2025) | -0.9°F (1948) | 0.89 in (2003) |
| December 26 | 55.0°F (2025) | 1.9°F (1948) | 0.67 in (2003) |
| December 27 | 48.0°F (2022) | 4.1°F (2015) | 0.50 in (2022) |
| December 28 | 54.0°F (2005) | 8.2°F (2009) | 0.32 in (2024) |
| December 29 | 51.1°F (2011) | 8.2°F (2009) | 0.77 in (2010) |
| December 30 | 54.0°F (2011) | 5.0°F (1948) | 0.31 in (2022) |
| December 31 | 46.9°F (2004) | 2.1°F (2014) | 0.61 in (2005) |