Sitka weather in December: Sitka, Alaska: normal highs, lows, rain and records for December
Sitka in December has a normal high of 42°F and a normal low of 33°F, a daily mean of 38°F, falling from 43°F on the 1st to 41°F by the 31st. Measurable precipitation falls on 22 days in a normal December, 8.43 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 5°C and low of 1°C, 214 mm of precipitation in December.
- NOAA stationSitka Airport
- Station IDUSW00025333
- Location57.05°N 135.36°W
- Elevation14 ft (4 m)
- Population8,355
- Jan 41° 32°
- Feb 41° 32°
- Mar 43° 33°
- Apr 48° 37°
- May 53° 43°
- Jun 58° 48°
- Jul 60° 53°
- Aug 62° 53°
- Sep 58° 49°
- Oct 51° 42°
- Nov 44° 36°
- Dec 42° 33°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sitka in December?
The normal high is 42°F and the normal low 33°F, for a daily mean of 37.5°F. December is 2.5°F cooler than November and 1.0°F warmer than January. December is the 9th warmest month of the year in Sitka and the 4th wettest. Across the month the normal high falls 2°F, from 43°F on December 1 to 41°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 35°F and 40°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 72%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 43°F | 34°F | 72% | 55% |
| December 8 | 42°F | 34°F | 71% | 54% |
| December 15 | 42°F | 33°F | 70% | 53% |
| December 22 | 41°F | 33°F | 69% | 51% |
| December 31 | 41°F | 33°F | 68% | 50% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 43°F | 34°F | 72% | 55% | 7 h 10 min |
| December 2 | 43°F | 34°F | 72% | 55% | 7 h 10 min |
| December 3 | 43°F | 34°F | 71% | 54% | 7 h 10 min |
| December 4 | 42°F | 34°F | 71% | 54% | 7 h 10 min |
| December 5 | 42°F | 34°F | 71% | 54% | 7 h |
| December 6 | 42°F | 34°F | 71% | 54% | 7 h |
| December 7 | 42°F | 34°F | 71% | 54% | 7 h |
| December 8 | 42°F | 34°F | 71% | 54% | 7 h |
| December 9 | 42°F | 34°F | 71% | 54% | 6 h 50 min |
| December 10 | 42°F | 34°F | 71% | 53% | 6 h 50 min |
| December 11 | 42°F | 34°F | 71% | 53% | 6 h 50 min |
| December 12 | 42°F | 34°F | 71% | 53% | 6 h 50 min |
| December 13 | 42°F | 34°F | 71% | 53% | 6 h 50 min |
| December 14 | 42°F | 34°F | 71% | 53% | 6 h 50 min |
| December 15 | 42°F | 33°F | 70% | 53% | 6 h 50 min |
| December 16 | 42°F | 33°F | 70% | 52% | 6 h 40 min |
| December 17 | 41°F | 33°F | 70% | 52% | 6 h 40 min |
| December 18 | 41°F | 33°F | 70% | 52% | 6 h 40 min |
| December 19 | 41°F | 33°F | 70% | 52% | 6 h 40 min |
| December 20 | 41°F | 33°F | 70% | 52% | 6 h 40 min |
| December 21 | 41°F | 33°F | 69% | 52% | 6 h 40 min |
| December 22 | 41°F | 33°F | 69% | 51% | 6 h 40 min |
| December 23 | 41°F | 33°F | 69% | 51% | 6 h 40 min |
| December 24 | 41°F | 33°F | 69% | 51% | 6 h 40 min |
| December 25 | 41°F | 33°F | 69% | 51% | 6 h 40 min |
| December 26 | 41°F | 33°F | 69% | 51% | 6 h 40 min |
| December 27 | 41°F | 33°F | 69% | 51% | 6 h 40 min |
| December 28 | 41°F | 33°F | 69% | 50% | 6 h 40 min |
| December 29 | 41°F | 33°F | 69% | 50% | 6 h 50 min |
| December 30 | 41°F | 33°F | 69% | 50% | 6 h 50 min |
| December 31 | 41°F | 33°F | 68% | 50% | 6 h 50 min |
- Normal high
- 42°FDecember average
- Normal low
- 33°FDecember average
- Precipitation
- 8.43 inmonth total
- Days with precipitation
- 220.01 inch or more
- Nights at 32°F or colder
- 12
- Daylight
- 7 h 10 min to 6 h 50 minDecember 1 to December 31
- Sunshine
- 45%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00025333; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sitka in December?
On a given December day the chance of 0.01 inch or more is 70% on average, highest around December 1 (72%). In all, 8.43 in falls on 22 days of a normal December, 2 of them with an inch or more.
In a normal December in Sitka, 12 nights fall to freezing and 2 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00025333.
How humid and windy is Sitka in December?
At 3 p.m. the normal temperature is 38°F with 74% relative humidity and a dew point of 30°F; at 6 a.m. it is 36°F with 76% humidity. The wind averages 9.4 mph, most often from the east-southeast in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 36°F | 29°F | 76% | 9.3 mph | 34% |
| 9 a.m. | 36°F | 30°F | 76% | 9.5 mph | – |
| noon | 38°F | 30°F | 74% | 9.6 mph | 30% |
| 3 p.m. | 38°F | 30°F | 74% | 9.4 mph | – |
| 6 p.m. | 37°F | 30°F | 76% | 9.4 mph | – |
| 9 p.m. | 36°F | 30°F | 76% | 9.3 mph | 35% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00025333. 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 Sitka?
The warmest December temperature on this station's record (since 1944) is 65°F, on December 12, 1944; the coldest is 1°F, on December 3, 1970. The wettest December brought 16.55 in (1956); the snowiest, 40.0 inches (1961).
The December mean against the 1991-2020 normal of 37.5°F: 2021 32.0°F (−5.5), 2022 34.6°F (−2.9), 2023 41.8°F (+4.3), 2024 42.5°F (+5.0), 2025 32.8°F (−4.7). 2 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 32.0°F | −5.5°F | 4.52 in |
| 2022 | 34.6°F | −2.9°F | 5.71 in |
| 2023 | 41.8°F | +4.3°F | 15.47 in |
| 2024 | 42.5°F | +5.0°F | 8.51 in |
| 2025 | 32.8°F | −4.7°F | 10.75 in |
Source: records: ACIS, station USW00025333; recent months: ACIS, station USW00025333. Records and recent months use complete months only.
How does December in Sitka compare across Alaska?
Across the 85 places PlainClimate covers in Alaska, December normal highs run from −7°F in Chicken to 42°F in Sitka; Sitka's is 42°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.