Weather on March 21
Carlsbad, CA
55 Years of Data
Avg High
65°F
Avg Low
51°F
Warmest
2026
69°F avg
Coldest
1987
50°F avg
About This Date
March 21st in Carlsbad, CA typically brings mild spring weather, with average highs around 65°F and lows near 51°F. Over 56 years of records, the warmest March 21st was in 2026 (69°F average), while the coldest was 1987 (50°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 25% of March 21st dates historically, with the wettest March 21st recording 3.1" 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 March 21st in Carlsbad, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 77° | 60° | 69° | — | — |
| 2025 | 65° | 48° | 56° | — | — |
| 2024 | 65° | 55° | 60° | — | — |
| 2023 | 62° | 52° | 57° | 3.1" | — |
| 2022 | 64° | 50° | 57° | — | — |
| 2021 | 61° | 48° | 54° | — | — |
| 2020 | 63° | 52° | 57° | — | — |
| 2019 | 62° | 52° | 57° | 0.23" | — |
| 2018 | 72° | 53° | 62° | — | — |
| 2017 | 69° | 53° | 61° | 0.03" | — |
| 2016 | 66° | 56° | 61° | — | — |
| 2015 | 68° | 58° | 63° | — | — |
| 2014 | 64° | 57° | 61° | — | — |
| 2013 | 67° | 54° | 60° | — | — |
| 2012 | 66° | 47° | 56° | — | — |
| 2011 | 60° | 49° | 54° | 1.24" | — |
| 2010 | 70° | 49° | 59° | — | — |
| 2009 | 61° | 54° | 57° | — | — |
| 2008 | 67° | 48° | 57° | 0.03" | — |
| 2007 | 59° | 51° | 55° | 0.05" | — |
| 2006 | 56° | 48° | 52° | 0.48" | — |
| 2005 | 64° | 53° | 59° | — | — |
| 2004 | 63° | 54° | 58° | — | — |
| 2003 | 63° | 48° | 55° | — | — |
| 2002 | 69° | 48° | 59° | — | — |
| 2001 | 62° | 54° | 58° | — | — |
| 2000 | 67° | 50° | 58° | — | — |
| 1999 | 61° | 44° | 52° | — | — |
| 1998 | 64° | 51° | 58° | — | — |
| 1997 | 69° | 48° | 59° | — | — |
| 1996 | 62° | 56° | 59° | — | — |
| 1995 | 63° | 51° | 57° | 0.89" | — |
| 1994 | 69° | 50° | 60° | — | — |
| 1993 | 64° | 58° | 61° | — | — |
| 1992 | 62° | 58° | 60° | 0.97" | — |
| 1991 | 56° | 45° | 50° | 0.94" | — |
| 1990 | 82° | 53° | 68° | — | — |
| 1989 | 68° | 47° | 57° | — | — |
| 1988 | 68° | 48° | 58° | — | — |
| 1987coldest | 58° | 43° | 50° | 0.89" | — |
| 1986 | 70° | 50° | 60° | — | — |
| 1985 | 60° | 44° | 52° | — | — |
| 1984 | 69° | 49° | 59° | — | — |
| 1983 | 63° | 45° | 54° | 1.88" | — |
| 1982 | 66° | 44° | 55° | — | — |
| 1981 | 63° | 44° | 53° | — | — |
| 1980 | 64° | 54° | 59° | — | — |
| 1979 | 61° | 49° | 55° | 0.2" | — |
| 1978 | 66° | 58° | 62° | — | — |
| 1977 | 68° | 49° | 58° | — | — |
| 1976 | 77° | 42° | 60° | — | — |
| 1975 | 64° | 43° | 53° | — | — |
| 1974 | 67° | 51° | 59° | — | — |
| 1973 | 63° | 49° | 56° | 0.03" | — |
| 1972 | 68° | 55° | 62° | — | — |
| 1971 | 63° | — | — | — | — |
56 years of data from CARLSBAD MCCLELLAN PALOMAR AP