Weather on May 21
Carlsbad, CA
55 Years of Data
Avg High
67°F
Avg Low
57°F
Warmest
1988
70°F avg
Coldest
1994
56°F avg
About This Date
May 21st in Carlsbad, CA typically brings mild spring weather, with average highs around 67°F and lows near 57°F. Over 55 years of records, the warmest May 21st was in 1988 (70°F average), while the coldest was 1994 (56°F) — a 14°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 21st dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 21st in Carlsbad, CA? Great weather for outdoor activities.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 57° | 64° | — | — |
| 2024 | 65° | 56° | 60° | — | — |
| 2023 | 67° | 60° | 63° | — | — |
| 2022 | 63° | 58° | 60° | — | — |
| 2021 | 63° | 54° | 58° | — | — |
| 2020 | 72° | 57° | 64° | — | — |
| 2019 | 64° | 57° | 61° | — | — |
| 2018 | 63° | 57° | 60° | 0.03" | — |
| 2017 | 73° | 59° | 66° | — | — |
| 2016 | 64° | 57° | 61° | — | — |
| 2015 | 65° | 59° | 62° | — | — |
| 2014 | 67° | 57° | 62° | — | — |
| 2013 | 73° | 63° | 68° | — | — |
| 2012 | 69° | 58° | 63° | — | — |
| 2011 | 69° | 60° | 65° | — | — |
| 2010 | 65° | 57° | 61° | — | — |
| 2009 | 67° | 59° | 63° | — | — |
| 2008 | 66° | 57° | 62° | — | — |
| 2007 | 62° | 58° | 60° | — | — |
| 2006 | 68° | 61° | 64° | — | — |
| 2005 | 78° | 59° | 69° | — | — |
| 2004 | 64° | 60° | 62° | — | — |
| 2003 | 74° | 58° | 66° | — | — |
| 2002 | 64° | 52° | 58° | — | — |
| 2001 | 65° | 59° | 62° | 0.03" | — |
| 2000 | 68° | 58° | 63° | — | — |
| 1999 | 61° | 55° | 58° | — | — |
| 1998 | 67° | 56° | 61° | — | — |
| 1997 | 68° | 63° | 65° | — | — |
| 1996 | 67° | 57° | 62° | — | — |
| 1995 | 61° | 57° | 59° | — | — |
| 1994coldest | 64° | 49° | 56° | — | — |
| 1993 | 66° | 60° | 63° | — | — |
| 1992 | 67° | 61° | 64° | — | — |
| 1991 | 60° | 54° | 57° | — | — |
| 1990 | 65° | 54° | 59° | — | — |
| 1989 | 66° | 52° | 59° | — | — |
| 1988warmest | 83° | 58° | 70° | — | — |
| 1987 | 65° | 55° | 60° | — | — |
| 1986 | 66° | 59° | 63° | — | — |
| 1985 | 63° | 62° | 62° | — | — |
| 1984 | 70° | 61° | 65° | — | — |
| 1983 | 67° | 53° | 60° | — | — |
| 1982 | 65° | 61° | 63° | — | — |
| 1981 | 66° | 59° | 63° | — | — |
| 1980 | 66° | 58° | 62° | 0.13" | — |
| 1979 | 67° | 59° | 63° | — | — |
| 1978 | 75° | 53° | 64° | — | — |
| 1977 | 67° | 50° | 58° | — | — |
| 1976 | 71° | 52° | 61° | — | — |
| 1975 | 68° | 46° | 57° | — | — |
| 1974 | 71° | 49° | 60° | — | — |
| 1973 | 70° | 54° | 62° | — | — |
| 1972 | 69° | 46° | 58° | — | — |
| 1971 | 66° | 53° | 60° | — | — |
55 years of data from CARLSBAD MCCLELLAN PALOMAR AP