Weather on December 31
Newport Beach, CA
55 Years of Data
Avg High
62°F
Avg Low
48°F
Warmest
2025
66°F avg
Coldest
2010
46°F avg
About This Date
December 31st in Newport Beach, CA typically brings mild winter weather, with average highs around 62°F and lows near 48°F. Over 55 years of records, the warmest December 31st was in 2025 (66°F average), while the coldest was 2010 (46°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 24% of December 31st dates historically, with the wettest December 31st recording 1.7" of rain. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for December 31st in Newport Beach, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 73° | 59° | 66° | 0.86" | — |
| 2024 | 58° | 53° | 55° | — | — |
| 2023 | 62° | 55° | 59° | 0.15" | — |
| 2022 | 59° | 56° | 57° | 0.15" | — |
| 2021 | 59° | 50° | 55° | 0.28" | — |
| 2020 | 64° | 52° | 58° | — | — |
| 2019 | 69° | 59° | 64° | — | — |
| 2018 | 64° | 50° | 57° | — | — |
| 2017 | 63° | 53° | 58° | — | — |
| 2016 | 62° | 54° | 58° | 0.46" | — |
| 2015 | 62° | 44° | 53° | — | — |
| 2014 | 57° | 44° | 51° | 0.05" | — |
| 2013 | 66° | 47° | 56° | — | — |
| 2012 | 58° | 40° | 49° | — | — |
| 2011 | 60° | 47° | 53° | 0.05" | — |
| 2010coldest | 57° | 36° | 46° | — | — |
| 2009 | 69° | 46° | 58° | — | — |
| 2008 | 58° | 46° | 52° | — | — |
| 2007 | 60° | 47° | 53° | — | — |
| 2006 | 61° | 45° | 53° | — | — |
| 2005 | 61° | 52° | 56° | 0.97" | — |
| 2004 | 59° | 53° | 56° | 1.7" | — |
| 2003 | 62° | 43° | 52° | — | — |
| 2002 | 60° | 54° | 57° | — | — |
| 2001 | 60° | 56° | 58° | 0.41" | — |
| 2000 | 62° | 42° | 52° | — | — |
| 1999 | 62° | 53° | 58° | — | — |
| 1998 | 67° | 53° | 60° | — | — |
| 1997 | 67° | 55° | 61° | — | — |
| 1996 | 64° | 55° | 60° | — | — |
| 1995 | 61° | 55° | 58° | — | — |
| 1994 | 59° | 46° | 53° | — | — |
| 1993 | 65° | 48° | 56° | — | — |
| 1992 | 59° | 43° | 51° | — | — |
| 1991 | 61° | 44° | 52° | — | — |
| 1990 | 74° | 32° | 53° | — | — |
| 1989 | 60° | 46° | 53° | — | — |
| 1988 | 51° | 44° | 48° | 0.25" | — |
| 1987 | 57° | 41° | 49° | — | — |
| 1986 | 64° | 47° | 55° | — | — |
| 1985 | 63° | 54° | 58° | — | — |
| 1984 | 63° | 44° | 53° | — | — |
| 1983 | 68° | 53° | 61° | — | — |
| 1982 | 64° | 47° | 55° | — | — |
| 1981 | 62° | 51° | 57° | — | — |
| 1980 | 75° | 46° | 61° | — | — |
| 1979 | 68° | 48° | 58° | — | — |
| 1978 | 61° | 43° | 52° | — | — |
| 1977 | 63° | 53° | 58° | — | — |
| 1976 | 63° | 52° | 57° | 0.25" | — |
| 1975 | 60° | 47° | 53° | — | — |
| 1974 | 58° | 47° | 52° | 0.25" | — |
| 1973 | 60° | 47° | 53° | — | — |
| 1972 | 65° | 41° | 53° | — | — |
| 1971 | 67° | 42° | 54° | — | — |
55 years of data from NEWPORT BEACH HARBOR