Mammoth Lakes weather in December: Mammoth Lakes, California: normal highs, lows, rain and records for December
Mammoth Lakes in December has a normal high of 41°F and a normal low of 17°F, a daily mean of 29°F, falling from 43°F on the 1st to 41°F by the 31st. The month brings 4.07 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 5°C and low of −8°C, 103 mm of precipitation in December.
- NOAA stationMammoth Lakes Ranger Station
- Station IDUSC00045280
- Location37.65°N 118.96°W
- Elevation7,804 ft (2,379 m)
- Population7,124
- Jan 41° 17°
- Feb 41° 18°
- Mar 46° 22°
- Apr 51° 27°
- May 60° 35°
- Jun 70° 42°
- Jul 78° 49°
- Aug 77° 47°
- Sep 71° 40°
- Oct 61° 30°
- Nov 49° 23°
- Dec 41° 17°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Mammoth Lakes in December?
The normal high is 41°F and the normal low 17°F, for a daily mean of 29.2°F. December is 7.0°F cooler than November and 0.3°F warmer than January. December is the 11th warmest month of the year in Mammoth Lakes and the 2nd 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 3.0°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 26°F and 32°F.
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 43°F | 19°F | – | – |
| December 8 | 42°F | 18°F | – | – |
| December 15 | 41°F | 17°F | – | – |
| December 22 | 41°F | 17°F | – | – |
| December 31 | 41°F | 17°F | – | – |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 24)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 43°F | 19°F | – | – | 9 h 50 min |
| December 2 | 43°F | 19°F | – | – | 9 h 50 min |
| December 3 | 43°F | 19°F | – | – | 9 h 40 min |
| December 4 | 43°F | 18°F | – | – | 9 h 40 min |
| December 5 | 42°F | 18°F | – | – | 9 h 40 min |
| December 6 | 42°F | 18°F | – | – | 9 h 40 min |
| December 7 | 42°F | 18°F | – | – | 9 h 40 min |
| December 8 | 42°F | 18°F | – | – | 9 h 40 min |
| December 9 | 42°F | 18°F | – | – | 9 h 40 min |
| December 10 | 41°F | 17°F | – | – | 9 h 40 min |
| December 11 | 41°F | 17°F | – | – | 9 h 40 min |
| December 12 | 41°F | 17°F | – | – | 9 h 40 min |
| December 13 | 41°F | 17°F | – | – | 9 h 40 min |
| December 14 | 41°F | 17°F | – | – | 9 h 40 min |
| December 15 | 41°F | 17°F | – | – | 9 h 40 min |
| December 16 | 41°F | 17°F | – | – | 9 h 30 min |
| December 17 | 41°F | 17°F | – | – | 9 h 30 min |
| December 18 | 41°F | 17°F | – | – | 9 h 30 min |
| December 19 | 41°F | 17°F | – | – | 9 h 30 min |
| December 20 | 41°F | 17°F | – | – | 9 h 30 min |
| December 21 | 41°F | 17°F | – | – | 9 h 30 min |
| December 22 | 41°F | 17°F | – | – | 9 h 30 min |
| December 23 | 41°F | 17°F | – | – | 9 h 30 min |
| December 24 | 41°F | 16°F | – | – | 9 h 30 min |
| December 25 | 41°F | 16°F | – | – | 9 h 30 min |
| December 26 | 41°F | 17°F | – | – | 9 h 30 min |
| December 27 | 41°F | 17°F | – | – | 9 h 30 min |
| December 28 | 41°F | 17°F | – | – | 9 h 30 min |
| December 29 | 41°F | 17°F | – | – | 9 h 30 min |
| December 30 | 41°F | 17°F | – | – | 9 h 40 min |
| December 31 | 41°F | 17°F | – | – | 9 h 40 min |
- Normal high
- 41°FDecember average
- Normal low
- 17°FDecember average
- Precipitation
- 4.07 inmonth total
- Nights at 32°F or colder
- 30
- Daylight
- 9 h 50 min to 9 h 40 minDecember 1 to December 31
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00045280; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Mammoth Lakes in December?
In a normal December in Mammoth Lakes, 30 nights fall to freezing and 7 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00045280.
How does December in Mammoth Lakes compare across California?
Across the 219 places PlainClimate covers in California, December normal highs run from 38°F in Tahoma to 71°F in Anaheim; Mammoth Lakes's is 41°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Mammoth Lakes in November49°F by day, 23°F at night
- Mammoth Lakes in January41°F by day, 17°F at night
- Mammoth Lakes through the yearEvery month, frost dates, records and recent years
- California in DecemberThe statewide normal and the warmest and coolest places
- Anaheim: California's warmest Decembernormal high 71°F