Terrace Heights Weather in December
Average highs run from 42°F on December 1 to 37°F on December 31, and lows from 24°F to 23°F. Normal precipitation for the month is 1.44 in over about 10 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 38°F
- Average low
- 23°F
- Precipitation
- 1.44 in
- Snowfall
- 7.7 in
- Record high
- 68°FDec 11, 2025
- Record low
- -7°FDec 26, 2008
- Chance of a freeze
- 100%
- Daylight
- 8 h 50 min to 8 h 38 min
- Cloud cover
- 71%
- Humidity
- 89%
- Dew point
- 25°F
- Wind
- 6.0 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 42°F | 24°F | 58°F 2021 | 7°F 2006 | 29% | 12% |
| Dec 2 | 42°F | 24°F | 58°F 2021 | 7°F 2006 | 29% | 12% |
| Dec 3 | 41°F | 24°F | 57°F 2008 | 6°F 2006 | 30% | 13% |
| Dec 4 | 41°F | 24°F | 55°F 2007 | 6°F 2006 | 30% | 13% |
| Dec 5 | 41°F | 24°F | 59°F 2007 | 7°F 2013 | 30% | 14% |
| Dec 6 | 40°F | 24°F | 60°F 2007 | 7°F 2013 | 30% | 14% |
| Dec 7 | 40°F | 24°F | 55°F 2025 | 10°F 2013 | 31% | 14% |
| Dec 8 | 40°F | 24°F | 55°F 2025 | -2°F 2013 | 31% | 15% |
| Dec 9 | 39°F | 23°F | 56°F 2025 | 3°F 2013 | 31% | 15% |
| Dec 10 | 39°F | 23°F | 51°F 2015 | 4°F 2013 | 32% | 15% |
| Dec 11 | 39°F | 23°F | 68°F 2025 | 4°F 2016 | 32% | 16% |
| Dec 12 | 38°F | 23°F | 56°F 2025 | 7°F 2005 | 32% | 16% |
| Dec 13 | 38°F | 23°F | 56°F 1999 | 8°F 2005 | 32% | 16% |
| Dec 14 | 38°F | 23°F | 55°F 2025 | 7°F 2000 | 32% | 16% |
| Dec 15 | 38°F | 23°F | 49°F 1998 | 8°F 2000 | 33% | 17% |
| Dec 16 | 38°F | 23°F | 68°F 2025 | -2°F 2008 | 33% | 17% |
| Dec 17 | 37°F | 23°F | 61°F 1999 | 1°F 2008 | 33% | 17% |
| Dec 18 | 37°F | 23°F | 54°F 1998 | 2°F 2016 | 33% | 17% |
| Dec 19 | 37°F | 23°F | 54°F 1999 | -3°F 2016 | 33% | 17% |
| Dec 20 | 37°F | 23°F | 51°F 2017 | 1°F 2008 | 33% | 18% |
| Dec 21 | 37°F | 23°F | 55°F 2019 | 1°F 1998 | 34% | 18% |
| Dec 22 | 37°F | 23°F | 54°F 2014 | -6°F 2008 | 34% | 18% |
| Dec 23 | 37°F | 23°F | 53°F 2014 | -3°F 2008 | 34% | 18% |
| Dec 24 | 37°F | 23°F | 55°F 2013 | 3°F 1998 | 34% | 18% |
| Dec 25 | 37°F | 23°F | 46°F 2013 | 4°F 2008 | 34% | 18% |
| Dec 26 | 37°F | 23°F | 46°F 1998 | -7°F 2008 | 34% | 18% |
| Dec 27 | 37°F | 23°F | 52°F 2024 | -3°F 2008 | 34% | 18% |
| Dec 28 | 37°F | 23°F | 52°F 2004 | 9°F 2016 | 34% | 18% |
| Dec 29 | 37°F | 23°F | 52°F 1998 | 8°F 2007 | 34% | 18% |
| Dec 30 | 37°F | 23°F | 57°F 1998 | 7°F 2003 | 34% | 18% |
| Dec 31 | 37°F | 23°F | 49°F 1998 | 1°F 2015 | 34% | 18% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:26 AM, sunset 4:16 PM
- December 31
- sunrise 7:46 AM, sunset 4:24 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024243 (Yakima Air Terminal), public domain. Records: NOAA GHCN-Daily, station USC00457522, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.