Leavenworth weather in December: Leavenworth, Washington: normal highs, lows, rain and records for December
Leavenworth in December has a normal high of 34°F and a normal low of 20°F, a daily mean of 27°F, falling from 37°F on the 1st to 32°F by the 31st. Measurable precipitation falls on 14 days in a normal December, 4.52 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 1°C and low of −7°C, 115 mm of precipitation and 82 cm of snow in December.
- NOAA stationLeavenworth (3 mi S)
- Station IDUSC00454572
- Location47.56°N 120.67°W
- Elevation1,128 ft (344 m)
- Population2,908
- Jan 34° 19°
- Feb 42° 21°
- Mar 52° 26°
- Apr 61° 32°
- May 71° 40°
- Jun 77° 46°
- Jul 87° 51°
- Aug 87° 50°
- Sep 78° 42°
- Oct 62° 33°
- Nov 44° 26°
- Dec 34° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Leavenworth in December?
The normal high is 34°F and the normal low 20°F, for a daily mean of 26.8°F. December is 8.2°F cooler than November and 0.4°F warmer than January. December is the 11th warmest month of the year in Leavenworth and the wettest, and the snowiest. Across the month the normal high falls 5°F, from 37°F on December 1 to 32°F on December 31. From one year to the next December's mean temperature typically moves about 3.2°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 24°F and 30°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 47%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 37°F | 23°F | 47% | 33% |
| December 8 | 35°F | 21°F | 47% | 34% |
| December 15 | 33°F | 20°F | 47% | 34% |
| December 22 | 32°F | 19°F | 46% | 34% |
| December 31 | 32°F | 19°F | 46% | 33% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 28)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 37°F | 23°F | 47% | 33% | 8 h 50 min |
| December 2 | 37°F | 22°F | 47% | 34% | 8 h 40 min |
| December 3 | 37°F | 22°F | 47% | 34% | 8 h 40 min |
| December 4 | 36°F | 22°F | 47% | 34% | 8 h 40 min |
| December 5 | 36°F | 22°F | 47% | 34% | 8 h 40 min |
| December 6 | 36°F | 21°F | 47% | 34% | 8 h 40 min |
| December 7 | 35°F | 21°F | 47% | 34% | 8 h 40 min |
| December 8 | 35°F | 21°F | 47% | 34% | 8 h 30 min |
| December 9 | 35°F | 21°F | 47% | 34% | 8 h 30 min |
| December 10 | 35°F | 21°F | 47% | 34% | 8 h 30 min |
| December 11 | 34°F | 20°F | 47% | 34% | 8 h 30 min |
| December 12 | 34°F | 20°F | 47% | 34% | 8 h 30 min |
| December 13 | 34°F | 20°F | 47% | 34% | 8 h 30 min |
| December 14 | 34°F | 20°F | 47% | 34% | 8 h 30 min |
| December 15 | 33°F | 20°F | 47% | 34% | 8 h 30 min |
| December 16 | 33°F | 20°F | 47% | 34% | 8 h 30 min |
| December 17 | 33°F | 20°F | 46% | 34% | 8 h 30 min |
| December 18 | 33°F | 19°F | 46% | 34% | 8 h 30 min |
| December 19 | 33°F | 19°F | 46% | 34% | 8 h 30 min |
| December 20 | 33°F | 19°F | 46% | 34% | 8 h 30 min |
| December 21 | 32°F | 19°F | 46% | 34% | 8 h 30 min |
| December 22 | 32°F | 19°F | 46% | 34% | 8 h 30 min |
| December 23 | 32°F | 19°F | 46% | 34% | 8 h 30 min |
| December 24 | 32°F | 19°F | 46% | 34% | 8 h 30 min |
| December 25 | 32°F | 19°F | 46% | 34% | 8 h 30 min |
| December 26 | 32°F | 19°F | 46% | 34% | 8 h 30 min |
| December 27 | 32°F | 19°F | 46% | 34% | 8 h 30 min |
| December 28 | 32°F | 19°F | 46% | 34% | 8 h 30 min |
| December 29 | 32°F | 19°F | 46% | 34% | 8 h 30 min |
| December 30 | 32°F | 19°F | 46% | 33% | 8 h 30 min |
| December 31 | 32°F | 19°F | 46% | 33% | 8 h 30 min |
- Normal high
- 34°FDecember average
- Normal low
- 20°FDecember average
- Precipitation
- 4.52 inmonth total
- Days with precipitation
- 140.01 inch or more
- Snowfall
- 32.4 inmonth total
- Nights at 32°F or colder
- 30
- Daylight
- 8 h 50 min to 8 h 30 minDecember 1 to December 31
- Sunshine
- 54%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00454572; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Leavenworth in December?
On a given December day the chance of 0.01 inch or more is 46% on average, highest around December 1 (47%). In all, 4.52 in falls on 14 days of a normal December, 1 of them with an inch or more.
In a normal December in Leavenworth, 30 nights fall to freezing, 10 days stay below freezing all day and snowfall averages 32.4 inches.
Snow falls on 9 days in a normal December.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00454572.
What are the records for December in Leavenworth?
The warmest December temperature on this station's record (since 1914) is 69°F, on December 10, 2025; the coldest is −36°F, on December 30, 1968. The wettest December brought 16.65 in (1933); the snowiest, 92.3 inches (1996).
The December mean against the 1991-2020 normal of 26.8°F: 2021 25.9°F (−0.9), 2022 19.4°F (−7.4), 2023 32.8°F (+5.9), 2024 31.9°F (+5.1), 2025 35.8°F (+9.0). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 25.9°F | −0.9°F | 3.27 in |
| 2022 | 19.4°F | −7.4°F | 4.35 in |
| 2023 | 32.8°F | +5.9°F | 4.34 in |
| 2024 | 31.9°F | +5.1°F | 5.72 in |
| 2025 | 35.8°F | +9.0°F | 10.41 in |
Source: records: ACIS, station USC00454572; recent months: ACIS, station USC00454572. Records and recent months use complete months only.
How does December in Leavenworth 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; Leavenworth's is 34°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Leavenworth in November44°F by day, 26°F at night
- Leavenworth in January34°F by day, 19°F at night
- Leavenworth 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