Bellingham weather in December: Bellingham, Washington: normal highs, lows, rain and records for December
Bellingham in December has a normal high of 46°F and a normal low of 34°F, a daily mean of 40°F, falling from 48°F on the 1st to 45°F by the 31st. Measurable precipitation falls on 19 days in a normal December, 4.33 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 8°C and low of 1°C, 110 mm of precipitation in December.
- NOAA stationBellingham International Airport
- Station IDUSW00024217
- Location48.79°N 122.54°W
- Elevation149 ft (45 m)
- From the center4 miles
- Population95,860
- Jan 46° 34°
- Feb 49° 35°
- Mar 53° 38°
- Apr 58° 42°
- May 64° 47°
- Jun 68° 52°
- Jul 73° 55°
- Aug 73° 55°
- Sep 68° 50°
- Oct 59° 43°
- Nov 51° 38°
- Dec 46° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Bellingham in December?
The normal high is 46°F and the normal low 34°F, for a daily mean of 39.8°F. December is 4.7°F cooler than November and 0.4°F cooler than January. December is the 12th warmest month of the year in Bellingham and the 3rd wettest. Across the month the normal high falls 3°F, from 48°F on December 1 to 45°F on December 31. From one year to the next December's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 37°F and 43°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 64%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 48°F | 36°F | 64% | 38% |
| December 8 | 46°F | 35°F | 64% | 37% |
| December 15 | 45°F | 34°F | 63% | 37% |
| December 22 | 45°F | 34°F | 62% | 36% |
| December 31 | 45°F | 34°F | 62% | 36% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 23)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 48°F | 36°F | 64% | 38% | 8 h 40 min |
| December 2 | 47°F | 35°F | 64% | 38% | 8 h 30 min |
| December 3 | 47°F | 35°F | 64% | 38% | 8 h 30 min |
| December 4 | 47°F | 35°F | 64% | 38% | 8 h 30 min |
| December 5 | 47°F | 35°F | 64% | 38% | 8 h 30 min |
| December 6 | 47°F | 35°F | 64% | 38% | 8 h 30 min |
| December 7 | 46°F | 35°F | 64% | 37% | 8 h 30 min |
| December 8 | 46°F | 35°F | 64% | 37% | 8 h 20 min |
| December 9 | 46°F | 35°F | 63% | 37% | 8 h 20 min |
| December 10 | 46°F | 34°F | 63% | 37% | 8 h 20 min |
| December 11 | 46°F | 34°F | 63% | 37% | 8 h 20 min |
| December 12 | 46°F | 34°F | 63% | 37% | 8 h 20 min |
| December 13 | 45°F | 34°F | 63% | 37% | 8 h 20 min |
| December 14 | 45°F | 34°F | 63% | 37% | 8 h 20 min |
| December 15 | 45°F | 34°F | 63% | 37% | 8 h 20 min |
| December 16 | 45°F | 34°F | 63% | 36% | 8 h 20 min |
| December 17 | 45°F | 34°F | 63% | 36% | 8 h 20 min |
| December 18 | 45°F | 34°F | 63% | 36% | 8 h 20 min |
| December 19 | 45°F | 34°F | 63% | 36% | 8 h 20 min |
| December 20 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 21 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 22 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 23 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 24 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 25 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 26 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 27 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 28 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 29 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 30 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
| December 31 | 45°F | 34°F | 62% | 36% | 8 h 20 min |
- Normal high
- 46°FDecember average
- Normal low
- 34°FDecember average
- Precipitation
- 4.33 inmonth total
- Days with precipitation
- 190.01 inch or more
- Nights at 32°F or colder
- 13
- 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 USW00024217; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Bellingham in December?
On a given December day the chance of 0.01 inch or more is 63% on average, highest around December 1 (64%). In all, 4.33 in falls on 19 days of a normal December.
In a normal December in Bellingham, 13 nights fall to freezing and 2 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024217.
How humid and windy is Bellingham in December?
At 3 p.m. the normal temperature is 42°F with 71% relative humidity and a dew point of 33°F; at 6 a.m. it is 37°F with 81% humidity. The wind averages 8.3 mph, most often from the east in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 37°F | 31°F | 81% | 7.7 mph | – |
| 9 a.m. | 37°F | 32°F | 81% | 8.4 mph | – |
| noon | 41°F | 33°F | 74% | 9.6 mph | 33% |
| 3 p.m. | 42°F | 33°F | 71% | 9.3 mph | 32% |
| 6 p.m. | 39°F | 33°F | 78% | 8.0 mph | – |
| 9 p.m. | 38°F | 32°F | 81% | 7.9 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024217. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for December in Bellingham?
The warmest December temperature on this station's record (since 1949) is 67°F, on December 10, 2014; the coldest is −1°F, on December 16, 1964. The wettest December brought 9.99 in (1979); the snowiest, 19.2 inches (1968).
The December mean against the 1991-2020 normal of 39.8°F: 2021 34.6°F (−5.2), 2022 34.5°F (−5.3), 2023 43.3°F (+3.5), 2024 42.7°F (+2.9), 2025 43.2°F (+3.4). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 34.6°F | −5.2°F | 3.58 in |
| 2022 | 34.5°F | −5.3°F | 3.28 in |
| 2023 | 43.3°F | +3.5°F | 5.67 in |
| 2024 | 42.7°F | +2.9°F | 5.36 in |
| 2025 | 43.2°F | +3.4°F | 8.05 in |
Source: records: ACIS, station USW00024217; recent months: ACIS, station USW00024217. Records and recent months use complete months only.
How does December in Bellingham 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; Bellingham's is 46°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Bellingham in November51°F by day, 38°F at night
- Bellingham in January46°F by day, 34°F at night
- Bellingham through the yearEvery month, frost dates, records and recent years
- Washington in DecemberThe statewide normal and the warmest and coolest places
- Grayland: Washington's warmest Decembernormal high 48°F