December weather in Mammoth Lakes, CA
The average temperature in Mammoth Lakes in December is 29.2°F (17.1°F–41.4°F). Average precipitation: 4.07 inches.
December is a winter month in Mammoth Lakes, and is cooler than the annual average of 43.9°F. Daily temperatures swing about 24.3°F between overnight low and afternoon high. Daylight averages about 9h 25m. For travel, December is cold.
Avg High
41.4°F
Avg Low
17.1°F
Precipitation
4.07 in
Daylight
9h 25m
December records in Mammoth Lakes
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 62.1°F (1995) | -2.9°F (2019) | 1.01 in (2012) |
| December 2 | 64.0°F (2008) | 5.0°F (2004) | 1.32 in (2005) |
| December 3 | 55.0°F (2008) | -2.0°F (2004) | 1.50 in (2001) |
| December 4 | 59.0°F (1993) | -0.9°F (2001) | 0.38 in (2013) |
| December 5 | 61.0°F (2007) | -7.1°F (2013) | 0.44 in (2003) |
| December 6 | 59.0°F (2007) | -2.0°F (1998) | 1.10 in (2003) |
| December 7 | 55.9°F (1995) | -0.9°F (1998) | 0.96 in (2007) |
| December 8 | 55.9°F (2015) | -5.1°F (2013) | 1.26 in (2019) |
| December 9 | 55.9°F (1995) | -7.1°F (2009) | 0.08 in (1997) |
| December 10 | 57.9°F (2004) | -2.0°F (1997) | 1.05 in (1996) |
| December 11 | 61.0°F (2008) | 1.0°F (1997) | 1.85 in (1996) |
| December 12 | 63.0°F (2004) | 0.0°F (1997) | 0.71 in (1996) |
| December 13 | 60.1°F (2010) | 6.1°F (1997) | 2.78 in (1995) |
| December 14 | 61.0°F (2017) | -0.9°F (1994) | 1.50 in (2000) |
| December 15 | 57.0°F (2017) | -9.0°F (2015) | 0.85 in (2002) |
| December 16 | 57.9°F (2017) | -7.1°F (2015) | 0.81 in (2002) |
| December 17 | 60.1°F (1999) | 0.0°F (1993) | 1.54 in (2002) |
| December 18 | 61.0°F (1998) | -2.9°F (2006) | 1.68 in (2010) |
| December 19 | 57.0°F (2017) | -5.1°F (2012) | 4.48 in (2010) |
| December 20 | 57.0°F (2004) | -2.9°F (2012) | 3.05 in (2010) |
| December 21 | 57.0°F (2020) | -11.9°F (1998) | 0.45 in (1996) |
| December 22 | 55.0°F (2014) | -5.1°F (1993) | 1.80 in (1996) |
| December 23 | 55.9°F (2014) | -4.0°F (1998) | 1.34 in (1996) |
| December 24 | 54.0°F (2005) | -4.0°F (2002) | 0.97 in (2012) |
| December 25 | 54.0°F (2017) | 0.0°F (2015) | 0.27 in (2015) |
| December 26 | 55.9°F (1996) | -8.0°F (2002) | 0.63 in (2012) |
| December 27 | 55.0°F (2017) | -5.1°F (2003) | 0.85 in (2006) |
| December 28 | 55.9°F (2017) | -4.0°F (2003) | 0.43 in (2004) |
| December 29 | 62.1°F (2017) | 1.0°F (2003) | 1.03 in (2010) |
| December 30 | 63.0°F (2017) | -6.0°F (2010) | 1.10 in (1996) |
| December 31 | 57.0°F (2013) | -2.9°F (2010) | 3.10 in (2004) |