Weather on October 21
Oceanside, CA
55 Years of Data
About This Date
October 21st in Oceanside, CA typically brings pleasant fall weather, with average highs around 73°F and lows near 54°F. Over 54 years of records, the warmest October 21st was in 2019 (72°F average), while the coldest was 2008 (57°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 9% of October 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 October 21st in Oceanside, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 45° | 59° | — | — |
| 2024 | 79° | 45° | 62° | — | — |
| 2023 | 79° | 53° | 66° | — | — |
| 2022 | 76° | 65° | 70° | — | — |
| 2021 | 72° | 44° | 58° | — | — |
| 2020 | 74° | 64° | 69° | — | — |
| 2019warmest | 93° | 51° | 72° | — | — |
| 2018 | 74° | 46° | 60° | — | — |
| 2017 | 74° | 52° | 63° | — | — |
| 2016 | 88° | 51° | 69° | — | — |
| 2015 | 78° | 56° | 67° | — | — |
| 2014 | 76° | 57° | 66° | — | — |
| 2013 | 71° | 51° | 61° | — | — |
| 2012 | 72° | 63° | 67° | 0.08" | — |
| 2011 | 70° | 52° | 61° | — | — |
| 2010 | 66° | 60° | 63° | 0.2" | — |
| 2009 | 75° | 47° | 61° | — | — |
| 2008coldest | 68° | 46° | 57° | 0.01" | — |
| 2007 | 88° | 48° | 68° | — | — |
| 2006 | 74° | 44° | 59° | — | — |
| 2005 | 67° | 61° | 64° | — | — |
| 2004 | 66° | 53° | 60° | — | — |
| 2003 | 89° | 51° | 70° | — | — |
| 2002 | 69° | 58° | 63° | — | — |
| 2001 | 71° | 59° | 65° | — | — |
| 2000 | 70° | 56° | 63° | — | — |
| 1999 | 90° | 47° | 68° | — | — |
| 1998 | 67° | 55° | 61° | — | — |
| 1997 | 68° | 65° | 66° | — | — |
| 1996 | 83° | 49° | 66° | — | — |
| 1995 | 67° | 61° | 64° | — | — |
| 1994 | 67° | 50° | 58° | — | — |
| 1993 | 74° | 51° | 62° | — | — |
| 1992 | 70° | 65° | 67° | — | — |
| 1991 | 69° | 63° | 66° | — | — |
| 1990 | 82° | 52° | 67° | — | — |
| 1989 | 69° | 60° | 65° | — | — |
| 1988 | 67° | 63° | 65° | — | — |
| 1987 | 68° | 55° | 62° | — | — |
| 1986 | 75° | 52° | 63° | — | — |
| 1985 | 66° | 60° | 63° | — | — |
| 1984 | 69° | 51° | 60° | — | — |
| 1983 | 72° | 60° | 66° | — | — |
| 1982 | 71° | 61° | 66° | — | — |
| 1981 | 70° | 55° | 62° | — | — |
| 1980 | 73° | 54° | 63° | — | — |
| 1979 | 66° | 54° | 60° | — | — |
| 1978 | 70° | 59° | 64° | — | — |
| 1977 | 68° | 57° | 63° | — | — |
| 1976 | 78° | 55° | 67° | 0.2" | — |
| 1975 | 72° | 54° | 63° | — | — |
| 1974 | 70° | 57° | 63° | — | — |
| 1972 | 73° | 50° | 62° | 0.13" | — |
| 1971 | 75° | 48° | 62° | — | — |
Oceanside, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Oceanside, CA Monthly Precipitation
Average rainfall per month, in inches.
Oceanside, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Oceanside, CA
Most pleasant months in Oceanside, CA: January, February, March, April, May, June, July, August, September, October, November, December.
What to expect on October 21st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
October 21st outlook →