Weather on December 17
San Bernardino, CA
55 Years of Data
Avg High
67°F
Avg Low
42°F
Warmest
1998
68°F avg
Coldest
2008
39°F avg
About This Date
December 17th in San Bernardino, CA typically brings mild winter weather, with average highs around 67°F and lows near 42°F — a 25°F daily swing. Over 47 years of records, the warmest December 17th was in 1998 (68°F average), while the coldest was 2008 (39°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 19% of December 17th dates historically, with the wettest December 17th recording 3.45" of rain.
Planning for December 17th in San Bernardino, CA? Great weather for outdoor activities.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 51° | 64° | — | — |
| 2016 | 55° | 36° | 45° | — | — |
| 2015 | 64° | 41° | 53° | — | — |
| 2014 | 56° | 47° | 51° | 1.5" | — |
| 2013 | 79° | 51° | 65° | — | — |
| 2012 | 61° | 47° | 54° | 0.03" | — |
| 2011 | 64° | 49° | 56° | — | — |
| 2010 | 55° | 43° | 49° | 0.08" | — |
| 2009 | 74° | 41° | 57° | — | — |
| 2008coldest | 41° | 38° | 39° | 1.78" | — |
| 2007 | 60° | 35° | 48° | — | — |
| 2006 | 56° | 36° | 46° | 0.36" | — |
| 2005 | 55° | 43° | 49° | — | — |
| 2004 | 73° | 40° | 56° | — | — |
| 2003 | 71° | 35° | 53° | — | — |
| 2002 | 55° | 49° | 52° | 3.45" | — |
| 2001 | 67° | 34° | 50° | — | — |
| 2000 | 83° | 41° | 62° | — | — |
| 1999 | 83° | 42° | 62° | — | — |
| 1998warmest | 81° | 55° | 68° | — | — |
| 1997 | 70° | 41° | 55° | — | — |
| 1996 | 71° | 46° | 59° | — | — |
| 1995 | 66° | 50° | 58° | — | — |
| 1994 | 76° | 39° | 57° | — | — |
| 1993 | 60° | 34° | 47° | — | — |
| 1992 | 57° | 37° | 47° | — | — |
| 1991 | 64° | 50° | 57° | — | — |
| 1990 | 61° | 37° | 49° | — | — |
| 1989 | 66° | 35° | 51° | — | — |
| 1988 | 56° | 42° | 49° | 0.89" | — |
| 1987 | 49° | 40° | 44° | 1.57" | — |
| 1986 | 69° | 42° | 56° | — | — |
| 1985 | 75° | 43° | 59° | — | — |
| 1984 | 60° | 27° | 43° | — | — |
| 1983 | 63° | 53° | 58° | — | — |
| 1982 | 72° | 35° | 53° | — | — |
| 1981 | 78° | 47° | 62° | — | — |
| 1980 | 82° | 51° | 67° | — | — |
| 1979 | 84° | 41° | 63° | — | — |
| 1978 | 57° | 45° | 51° | — | — |
| 1977 | 67° | 43° | 55° | 0.15" | — |
| 1976 | 77° | 38° | 57° | — | — |
| 1975 | 75° | 34° | 54° | — | — |
| 1974 | 76° | 42° | 59° | — | — |
| 1973 | 76° | 41° | 58° | — | — |
| 1972 | 70° | 42° | 56° | — | — |
| 1971 | 67° | 33° | 50° | — | — |
47 years of data from NORTON AFB