Delta Junction weather in December: Delta Junction, Alaska: normal highs, lows, rain and records for December
Delta Junction in December has a normal high of 9°F and a normal low of −5°F, a daily mean of 2°F, falling from 12°F on the 1st to 6°F by the 31st. Measurable precipitation falls on 6 days in a normal December, 0.23 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of −13°C and low of −20°C, 6 mm of precipitation in December.
- NOAA stationBig Delta Airport
- Station IDUSW00026415
- Location63.99°N 145.72°W
- Elevation1,277 ft (389 m)
- Population985
- Jan 6° -8°
- Feb 16° -1°
- Mar 25° 4°
- Apr 44° 24°
- May 59° 38°
- Jun 68° 49°
- Jul 70° 52°
- Aug 65° 47°
- Sep 53° 36°
- Oct 33° 20°
- Nov 15° 1°
- Dec 9° -5°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Delta Junction in December?
The normal high is 9°F and the normal low −5°F, for a daily mean of 2.4°F. December is 5.8°F cooler than November and 3.4°F warmer than January. December is the 11th warmest month of the year in Delta Junction and the 8th wettest. Across the month the normal high falls 6°F, from 12°F on December 1 to 6°F on December 31. From one year to the next December's mean temperature typically moves about 7.5°F either way (NOAA's standard deviation), so roughly two Decembers in three average between -5°F and 10°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 22%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 12°F | −2°F | 22% | 4% |
| December 8 | 11°F | −3°F | 21% | 4% |
| December 15 | 10°F | −4°F | 20% | 3% |
| December 22 | 8°F | −6°F | 19% | 3% |
| December 31 | 6°F | −8°F | 19% | 3% |
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 | 12°F | −2°F | 22% | 4% | 5 h 10 min |
| December 2 | 12°F | −2°F | 22% | 4% | 5 h 10 min |
| December 3 | 12°F | −2°F | 22% | 4% | 5 h |
| December 4 | 12°F | −2°F | 22% | 4% | 5 h |
| December 5 | 11°F | −2°F | 22% | 4% | 4 h 50 min |
| December 6 | 11°F | −2°F | 21% | 4% | 4 h 50 min |
| December 7 | 11°F | −3°F | 21% | 4% | 4 h 40 min |
| December 8 | 11°F | −3°F | 21% | 4% | 4 h 40 min |
| December 9 | 11°F | −3°F | 21% | 4% | 4 h 40 min |
| December 10 | 11°F | −3°F | 21% | 4% | 4 h 30 min |
| December 11 | 11°F | −3°F | 20% | 3% | 4 h 30 min |
| December 12 | 11°F | −3°F | 20% | 3% | 4 h 30 min |
| December 13 | 10°F | −4°F | 20% | 3% | 4 h 20 min |
| December 14 | 10°F | −4°F | 20% | 3% | 4 h 20 min |
| December 15 | 10°F | −4°F | 20% | 3% | 4 h 20 min |
| December 16 | 10°F | −4°F | 20% | 3% | 4 h 20 min |
| December 17 | 10°F | −4°F | 20% | 3% | 4 h 20 min |
| December 18 | 9°F | −5°F | 20% | 3% | 4 h 20 min |
| December 19 | 9°F | −5°F | 20% | 3% | 4 h 10 min |
| December 20 | 9°F | −5°F | 20% | 3% | 4 h 10 min |
| December 21 | 9°F | −5°F | 19% | 3% | 4 h 10 min |
| December 22 | 8°F | −6°F | 19% | 3% | 4 h 10 min |
| December 23 | 8°F | −6°F | 19% | 3% | 4 h 10 min |
| December 24 | 8°F | −6°F | 19% | 3% | 4 h 10 min |
| December 25 | 8°F | −7°F | 19% | 3% | 4 h 10 min |
| December 26 | 7°F | −7°F | 19% | 3% | 4 h 10 min |
| December 27 | 7°F | −7°F | 19% | 3% | 4 h 20 min |
| December 28 | 7°F | −7°F | 19% | 3% | 4 h 20 min |
| December 29 | 7°F | −8°F | 19% | 3% | 4 h 20 min |
| December 30 | 6°F | −8°F | 19% | 3% | 4 h 20 min |
| December 31 | 6°F | −8°F | 19% | 3% | 4 h 20 min |
- Normal high
- 9°FDecember average
- Normal low
- −5°FDecember average
- Precipitation
- 0.23 inmonth total
- Days with precipitation
- 60.01 inch or more
- Nights at 32°F or colder
- 31
- Daylight
- 5 h 10 min to 4 h 20 minDecember 1 to December 31
- Sunshine
- 65%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00026415; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Delta Junction in December?
On a given December day the chance of 0.01 inch or more is 20% on average, highest around December 1 (22%). In all, 0.23 in falls on 6 days of a normal December.
In a normal December in Delta Junction, 31 nights fall to freezing and 29 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00026415.
How humid and windy is Delta Junction in December?
At 3 p.m. the normal temperature is 2°F with 77% relative humidity and a dew point of −3°F; at 6 a.m. it is 2°F with 0% humidity. The wind averages 12.2 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. | 2°F | – | – | 12.0 mph | – |
| 9 a.m. | 1°F | −4°F | 79% | 12.5 mph | 31% |
| noon | 2°F | −3°F | 76% | 12.3 mph | – |
| 3 p.m. | 2°F | −3°F | 77% | 12.5 mph | 22% |
| 6 p.m. | 2°F | −4°F | 76% | 12.1 mph | – |
| 9 p.m. | 1°F | −4°F | 78% | 12.2 mph | 30% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00026415. 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 Delta Junction?
The December mean against the 1991-2020 normal of 2.4°F: 2021 4.0°F (+1.6), 2022 -0.0°F (−2.4), 2023 -0.8°F (−3.2), 2024 11.6°F (+9.2), 2025 -16.1°F (−18.5). 2 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 4.0°F | +1.6°F | 1.87 in |
| 2022 | -0.0°F | −2.4°F | 0.56 in |
| 2023 | -0.8°F | −3.2°F | 0.52 in |
| 2024 | 11.6°F | +9.2°F | 0.21 in |
| 2025 | -16.1°F | −18.5°F | 0.20 in |
Source: records: ACIS, NWS threaded record BIGthr; recent months: ACIS, station USW00026415. Records and recent months use complete months only.
How does December in Delta Junction 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; Delta Junction's is 9°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Delta Junction in November15°F by day, 1°F at night
- Delta Junction in January6°F by day, −8°F at night
- Delta Junction through the yearEvery month, frost dates, records and recent years
- Alaska in DecemberThe statewide normal and the warmest and coolest places
- Sitka: Alaska's warmest Decembernormal high 42°F