Sequim weather in December: Sequim, Washington: normal highs, lows, rain and records for December
Sequim in December has a normal high of 46°F and a normal low of 32°F, a daily mean of 39°F, falling from 47°F on the 1st to 45°F by the 31st. Measurable precipitation falls on 17 days in a normal December, 2.25 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 8°C and low of 0°C, 57 mm of precipitation and 4 cm of snow in December.
- NOAA stationSequim (2 mi E)
- Station IDUSC00457544
- Location48.09°N 123.06°W
- Elevation50 ft (15 m)
- Population8,199
- Jan 46° 32°
- Feb 48° 32°
- Mar 51° 35°
- Apr 56° 38°
- May 62° 44°
- Jun 65° 49°
- Jul 70° 52°
- Aug 70° 51°
- Sep 66° 46°
- Oct 58° 40°
- Nov 50° 35°
- Dec 46° 32°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sequim in December?
The normal high is 46°F and the normal low 32°F, for a daily mean of 38.8°F. December is 3.7°F cooler than November and 0.4°F cooler than January. December is the 12th warmest month of the year in Sequim and the 2nd wettest, and the snowiest. Across the month the normal high falls 2°F, from 47°F on December 1 to 45°F on December 31. From one year to the next December's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 37°F and 41°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 56%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 47°F | 32°F | 56% | 23% |
| December 8 | 46°F | 32°F | 55% | 23% |
| December 15 | 46°F | 32°F | 55% | 23% |
| December 22 | 45°F | 32°F | 54% | 23% |
| December 31 | 45°F | 32°F | 53% | 22% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 12)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 47°F | 32°F | 56% | 23% | 8 h 40 min |
| December 2 | 47°F | 32°F | 56% | 23% | 8 h 40 min |
| December 3 | 47°F | 32°F | 55% | 23% | 8 h 40 min |
| December 4 | 47°F | 32°F | 55% | 23% | 8 h 40 min |
| December 5 | 47°F | 32°F | 55% | 23% | 8 h 30 min |
| December 6 | 47°F | 32°F | 55% | 23% | 8 h 30 min |
| December 7 | 47°F | 32°F | 55% | 23% | 8 h 30 min |
| December 8 | 46°F | 32°F | 55% | 23% | 8 h 30 min |
| December 9 | 46°F | 32°F | 55% | 23% | 8 h 30 min |
| December 10 | 46°F | 32°F | 55% | 23% | 8 h 30 min |
| December 11 | 46°F | 32°F | 55% | 23% | 8 h 30 min |
| December 12 | 46°F | 32°F | 55% | 23% | 8 h 30 min |
| December 13 | 46°F | 32°F | 55% | 23% | 8 h 30 min |
| December 14 | 46°F | 32°F | 55% | 23% | 8 h 20 min |
| December 15 | 46°F | 32°F | 55% | 23% | 8 h 20 min |
| December 16 | 46°F | 32°F | 55% | 23% | 8 h 20 min |
| December 17 | 46°F | 32°F | 55% | 23% | 8 h 20 min |
| December 18 | 46°F | 32°F | 55% | 23% | 8 h 20 min |
| December 19 | 45°F | 32°F | 54% | 23% | 8 h 20 min |
| December 20 | 45°F | 32°F | 54% | 23% | 8 h 20 min |
| December 21 | 45°F | 32°F | 54% | 23% | 8 h 20 min |
| December 22 | 45°F | 32°F | 54% | 23% | 8 h 20 min |
| December 23 | 45°F | 32°F | 54% | 22% | 8 h 20 min |
| December 24 | 45°F | 32°F | 54% | 22% | 8 h 20 min |
| December 25 | 45°F | 32°F | 54% | 22% | 8 h 20 min |
| December 26 | 45°F | 32°F | 54% | 22% | 8 h 20 min |
| December 27 | 45°F | 32°F | 54% | 22% | 8 h 20 min |
| December 28 | 45°F | 32°F | 54% | 22% | 8 h 20 min |
| December 29 | 45°F | 32°F | 54% | 22% | 8 h 20 min |
| December 30 | 45°F | 32°F | 54% | 22% | 8 h 20 min |
| December 31 | 45°F | 32°F | 53% | 22% | 8 h 20 min |
- Normal high
- 46°FDecember average
- Normal low
- 32°FDecember average
- Precipitation
- 2.25 inmonth total
- Days with precipitation
- 170.01 inch or more
- Snowfall
- 1.4 inmonth total
- Nights at 32°F or colder
- 19
- Daylight
- 8 h 40 min to 8 h 20 minDecember 1 to December 31
- Sunshine
- 51%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00457544; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Sequim in December?
On a given December day the chance of 0.01 inch or more is 55% on average, highest around December 1 (56%). In all, 2.25 in falls on 17 days of a normal December.
In a normal December in Sequim, 19 nights fall to freezing and snowfall averages 1.4 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00457544.
What are the records for December in Sequim?
The warmest December temperature on this station's record (since 1980) is 65°F, on December 16, 2025; the coldest is −1°F, on December 1, 1985. The wettest December brought 6.14 in (2015); the snowiest, 25.0 inches (1996).
The December mean against the 1991-2020 normal of 38.8°F: 2021 35.8°F (−3.0), 2022 36.8°F (−2.0), 2024 43.2°F (+4.4), 2025 44.1°F (+5.4). 2 of 4 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 35.8°F | −3.0°F | 3.39 in |
| 2022 | 36.8°F | −2.0°F | 1.43 in |
| 2024 | 43.2°F | +4.4°F | 2.46 in |
| 2025 | 44.1°F | +5.4°F | 3.86 in |
Source: records: ACIS, station USC00457544; recent months: ACIS, station USC00457544. Records and recent months use complete months only.
How does December in Sequim compare across Washington?
Across the 96 places PlainClimate covers in Washington, December normal highs run from 29°F in Winthrop to 48°F in Grayland; Sequim's is 46°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.