Weather on December 18
Newport Beach, CA
55 Years of Data
Avg High
64°F
Avg Low
49°F
Warmest
1998
68°F avg
Coldest
1975
47°F avg
About This Date
December 18th in Newport Beach, CA typically brings mild winter weather, with average highs around 64°F and lows near 49°F. Over 55 years of records, the warmest December 18th was in 1998 (68°F average), while the coldest was 1975 (47°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 16% of December 18th dates historically, with the wettest December 18th recording 2.31" of rain. The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
Planning for December 18th in Newport Beach, CA? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 52° | 61° | — | — |
| 2024 | 73° | 54° | 63° | — | — |
| 2023 | 69° | 59° | 64° | — | — |
| 2022 | 59° | 46° | 53° | — | — |
| 2021 | 65° | 46° | 55° | — | — |
| 2020 | 64° | 50° | 57° | — | — |
| 2019 | 64° | 47° | 55° | — | — |
| 2018 | 64° | 54° | 59° | — | — |
| 2017 | 70° | 52° | 61° | — | — |
| 2016 | 62° | 38° | 50° | — | — |
| 2015 | 69° | 46° | 58° | — | — |
| 2014 | 62° | 54° | 58° | — | — |
| 2013 | 65° | 59° | 62° | — | — |
| 2012 | 60° | 57° | 59° | 0.23" | — |
| 2011 | 61° | 49° | 55° | — | — |
| 2010 | 59° | 56° | 57° | 0.64" | — |
| 2009 | 74° | 45° | 59° | — | — |
| 2008 | 57° | 42° | 50° | 0.99" | — |
| 2007 | 57° | 52° | 54° | — | — |
| 2006 | 59° | 43° | 51° | — | — |
| 2005 | 63° | 53° | 58° | — | — |
| 2004 | 73° | 49° | 61° | — | — |
| 2003 | 67° | 49° | 58° | — | — |
| 2002 | 61° | 51° | 56° | — | — |
| 2001 | 60° | 52° | 56° | — | — |
| 2000 | 72° | 49° | 60° | — | — |
| 1999 | 72° | 49° | 60° | — | — |
| 1998warmest | 78° | 57° | 68° | — | — |
| 1997 | 63° | 54° | 58° | 1.17" | — |
| 1996 | 74° | 54° | 64° | — | — |
| 1995 | 64° | 45° | 54° | — | — |
| 1994 | 58° | 48° | 53° | — | — |
| 1993 | 61° | 46° | 53° | — | — |
| 1992 | 59° | 48° | 54° | 0.2" | — |
| 1991 | 60° | 55° | 58° | — | — |
| 1990 | 59° | 43° | 51° | — | — |
| 1989 | 59° | 49° | 54° | — | — |
| 1988 | 57° | 48° | 53° | 0.56" | — |
| 1987 | 61° | 47° | 54° | — | — |
| 1986 | 65° | 52° | 58° | — | — |
| 1985 | 72° | 52° | 62° | — | — |
| 1984 | 58° | 46° | 52° | 1.52" | — |
| 1983 | 64° | 48° | 56° | — | — |
| 1982 | 64° | 45° | 54° | — | — |
| 1981 | 64° | 51° | 58° | — | — |
| 1980 | 60° | 51° | 56° | — | — |
| 1979 | 68° | 47° | 57° | — | — |
| 1978 | 58° | 50° | 54° | 2.31" | — |
| 1977 | 62° | 55° | 59° | 0.71" | — |
| 1976 | 68° | 49° | 58° | — | — |
| 1975coldest | 57° | 38° | 47° | — | — |
| 1974 | 64° | 44° | 54° | — | — |
| 1973 | 62° | 50° | 56° | — | — |
| 1972 | 68° | 46° | 57° | — | — |
| 1971 | 60° | 46° | 53° | — | — |
55 years of data from NEWPORT BEACH HARBOR