December weather in Barstow, CA
The average temperature in Barstow in December is 46.2°F (34.9°F–57.4°F). Average precipitation: 0.80 inches. Average snowfall is 0.3 inches.
December is a winter month in Barstow, and is cooler than the annual average of 65.7°F. Daily temperatures swing about 22.5°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 9h 40m. For travel, December is cool.
Avg High
57.4°F
Avg Low
34.9°F
Precipitation
0.80 in
Snow
0.3 in
December records in Barstow
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 75.9°F (2021) | 21.9°F (1994) | 0.09 in (2007) |
| December 2 | 75.0°F (2008) | 19.9°F (1994) | 0.20 in (1985) |
| December 3 | 84.9°F (1990) | 24.1°F (1990) | 0.37 in (2014) |
| December 4 | 75.9°F (1995) | 21.0°F (2006) | 0.34 in (2019) |
| December 5 | 73.0°F (1992) | 15.1°F (1996) | 0.40 in (1987) |
| December 6 | 73.9°F (2012) | 18.0°F (1994) | 1.20 in (1997) |
| December 7 | 70.0°F (1993) | 18.0°F (1994) | 0.77 in (1992) |
| December 8 | 73.0°F (1995) | 19.0°F (1994) | 0.19 in (1982) |
| December 9 | 72.0°F (1995) | 19.0°F (1994) | 0.18 in (1982) |
| December 10 | 73.0°F (1995) | 19.0°F (2013) | 0.40 in (1996) |
| December 11 | 73.9°F (2015) | 18.0°F (1985) | 0.27 in (1991) |
| December 12 | 86.0°F (1995) | 18.0°F (1985) | 0.85 in (2022) |
| December 13 | 71.1°F (1988) | 17.1°F (1985) | 0.15 in (2011) |
| December 14 | 75.9°F (1988) | 19.0°F (1985) | 0.42 in (2012) |
| December 15 | 75.0°F (1981) | 21.9°F (1994) | 0.67 in (2008) |
| December 16 | 71.1°F (1980) | 21.9°F (2005) | 0.35 in (1984) |
| December 17 | 71.1°F (1980) | 21.9°F (1994) | 0.65 in (2008) |
| December 18 | 75.0°F (2025) | 21.9°F (1984) | 0.22 in (1984) |
| December 19 | 75.0°F (1980) | 24.1°F (2006) | 0.45 in (1984) |
| December 20 | 75.0°F (2025) | 21.0°F (2006) | 1.36 in (2010) |
| December 21 | 75.0°F (2025) | 21.9°F (2012) | 1.60 in (2010) |
| December 22 | 77.0°F (2025) | 8.1°F (1990) | 1.82 in (2010) |
| December 23 | 71.1°F (2020) | 12.9°F (1990) | 0.52 in (2010) |
| December 24 | 70.0°F (2005) | 15.1°F (1990) | 0.24 in (2016) |
| December 25 | 72.0°F (1985) | 12.9°F (1990) | 0.61 in (1983) |
| December 26 | 69.1°F (1980) | 19.0°F (1987) | 0.94 in (2019) |
| December 27 | 72.0°F (1980) | 19.9°F (1987) | 0.50 in (1984) |
| December 28 | 71.1°F (1980) | 21.0°F (1990) | 0.50 in (1984) |
| December 29 | 75.0°F (1980) | 25.0°F (1987) | 1.25 in (2004) |
| December 30 | 73.9°F (2024) | 21.0°F (1988) | 0.00 in (1980) |
| December 31 | 69.1°F (1980) | 15.1°F (1990) | 0.05 in (2001) |