December weather in Santee, CA
The average temperature in Santee in December is 55.1°F (41.7°F–68.5°F). Average precipitation: 1.83 inches.
December is a winter month in Santee, and is cooler than the annual average of 65.1°F. Daily temperatures swing about 26.8°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 9h 51m. For travel, December is a comfortable month to visit.
Avg High
68.5°F
Avg Low
41.7°F
Precipitation
1.83 in
Daylight
9h 51m
December records in Santee
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 86.0°F (1995) | 30.9°F (1991) | 0.60 in (2007) |
| December 2 | 82.0°F (2015) | 30.9°F (1991) | 0.43 in (1985) |
| December 3 | 82.0°F (1979) | 30.9°F (2004) | 0.65 in (1985) |
| December 4 | 93.0°F (1979) | 34.0°F (2011) | 1.46 in (2019) |
| December 5 | 88.0°F (1979) | 32.0°F (1983) | 0.72 in (1987) |
| December 6 | 87.1°F (1979) | 30.0°F (2011) | 1.63 in (2018) |
| December 7 | 82.0°F (1988) | 30.0°F (2011) | 1.35 in (1986) |
| December 8 | 84.0°F (1981) | 32.0°F (1989) | 0.45 in (1984) |
| December 9 | 84.9°F (2025) | 28.9°F (1994) | 0.34 in (2019) |
| December 10 | 86.0°F (2025) | 32.0°F (1994) | 0.37 in (1996) |
| December 11 | 84.0°F (2017) | 30.9°F (2001) | 1.23 in (1984) |
| December 12 | 90.0°F (2010) | 30.0°F (1985) | 0.71 in (2011) |
| December 13 | 91.0°F (2010) | 30.0°F (1979) | 1.31 in (2012) |
| December 14 | 82.0°F (2004) | 28.9°F (1987) | 1.27 in (2021) |
| December 15 | 84.9°F (1980) | 28.0°F (1987) | 2.00 in (2008) |
| December 16 | 87.1°F (1980) | 30.9°F (1979) | 1.26 in (2016) |
| December 17 | 84.0°F (1999) | 32.0°F (1984) | 2.20 in (2008) |
| December 18 | 84.0°F (2025) | 32.0°F (2016) | 0.80 in (1984) |
| December 19 | 82.0°F (1999) | 30.9°F (2003) | 0.38 in (2013) |
| December 20 | 82.9°F (2004) | 28.9°F (1992) | 0.70 in (1990) |
| December 21 | 84.9°F (2005) | 30.0°F (1992) | 1.80 in (2010) |
| December 22 | 80.1°F (2014) | 32.0°F (1992) | 3.80 in (2010) |
| December 23 | 86.0°F (1989) | 26.1°F (1990) | 0.45 in (2019) |
| December 24 | 84.0°F (1980) | 30.0°F (1987) | 1.49 in (2021) |
| December 25 | 86.0°F (2022) | 25.0°F (1987) | 0.76 in (1983) |
| December 26 | 82.9°F (2022) | 26.1°F (1987) | 1.20 in (2019) |
| December 27 | 84.0°F (2013) | 28.9°F (1987) | 1.05 in (1984) |
| December 28 | 86.0°F (2017) | 28.9°F (1987) | 0.96 in (1984) |
| December 29 | 88.0°F (1980) | 30.9°F (1988) | 1.65 in (2004) |
| December 30 | 88.0°F (1980) | 28.0°F (1988) | 0.59 in (1981) |
| December 31 | 82.9°F (1980) | 30.9°F (1990) | 0.60 in (2004) |