Weather on March 18
Newport Beach, CA
55 Years of Data
Avg High
65°F
Avg Low
52°F
Warmest
2026
77°F avg
Coldest
1977
51°F avg
About This Date
March 18th in Newport Beach, CA typically brings mild spring weather, with average highs around 65°F and lows near 52°F. Over 56 years of records, the warmest March 18th was in 2026 (77°F average), while the coldest was 1977 (51°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 14% of March 18th dates historically, with the wettest March 18th recording 2.24" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for March 18th in Newport Beach, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 89° | 64° | 77° | — | — |
| 2025 | 62° | 50° | 56° | 0.08" | — |
| 2024 | 63° | 52° | 57° | 0.03" | — |
| 2023 | 67° | 51° | 59° | — | — |
| 2022 | 70° | 53° | 61° | — | — |
| 2021 | 60° | 50° | 55° | — | — |
| 2020 | 60° | 48° | 54° | — | — |
| 2019 | 67° | 53° | 60° | — | — |
| 2018 | 60° | 49° | 54° | — | — |
| 2017 | 62° | 56° | 59° | — | — |
| 2016 | 64° | 58° | 61° | — | — |
| 2015 | 67° | 62° | 64° | — | — |
| 2014 | 65° | 59° | 62° | — | — |
| 2013 | 61° | 56° | 58° | — | — |
| 2012 | 55° | 46° | 51° | 0.38" | — |
| 2011 | 65° | 49° | 57° | — | — |
| 2010 | 75° | 55° | 65° | — | — |
| 2009 | 78° | 53° | 66° | — | — |
| 2008 | 62° | 47° | 54° | — | — |
| 2007 | 59° | 55° | 57° | — | — |
| 2006 | 60° | 48° | 54° | 0.1" | — |
| 2005 | 61° | 56° | 58° | — | — |
| 2004 | 60° | 55° | 58° | — | — |
| 2003 | 65° | 52° | 58° | — | — |
| 2002 | 58° | 48° | 53° | 0.41" | — |
| 2001 | 63° | 54° | 58° | — | — |
| 2000 | 66° | 51° | 59° | — | — |
| 1999 | 66° | 52° | 59° | — | — |
| 1998 | 64° | 55° | 60° | — | — |
| 1997 | 66° | 51° | 59° | — | — |
| 1996 | 61° | 56° | 58° | — | — |
| 1995 | 64° | 60° | 62° | — | — |
| 1994 | 78° | 57° | 68° | — | — |
| 1993 | 64° | 58° | 61° | — | — |
| 1992 | 62° | 55° | 59° | — | — |
| 1991 | 59° | 52° | 55° | — | — |
| 1990 | 62° | 50° | 56° | — | — |
| 1989 | 60° | 49° | 54° | — | — |
| 1988 | 70° | 47° | 58° | — | — |
| 1987 | 59° | 48° | 54° | — | — |
| 1986 | 67° | 47° | 57° | — | — |
| 1985 | 60° | 47° | 53° | 0.23" | — |
| 1984 | 69° | 50° | 60° | — | — |
| 1983 | 63° | 52° | 57° | 0.84" | — |
| 1982 | 57° | 45° | 51° | 2.24" | — |
| 1981 | 64° | 51° | 58° | — | — |
| 1980 | 69° | 53° | 61° | — | — |
| 1979 | 62° | 51° | 57° | — | — |
| 1978 | 83° | 60° | 71° | — | — |
| 1977coldest | 58° | 45° | 51° | — | — |
| 1976 | 68° | 51° | 60° | — | — |
| 1975 | 62° | 45° | 53° | — | — |
| 1974 | 62° | 52° | 57° | — | — |
| 1973 | 62° | 49° | 55° | — | — |
| 1972 | 63° | 52° | 57° | — | — |
| 1971 | 65° | 50° | 57° | — | — |
56 years of data from NEWPORT BEACH HARBOR