Weather on April 21
San Leandro, CA
55 Years of Data
About This Date
April 21st in San Leandro, CA typically brings mild spring weather, with average highs around 67°F and lows near 46°F. Over 52 years of records, the warmest April 21st was in 2009 (77°F average), while the coldest was 1995 (35°F) — a 42°F range across recorded history. Rain or other precipitation has occurred on about 10% of April 21st dates historically, with the wettest April 21st recording 0.53" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for April 21st in San Leandro, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 56° | 48° | 52° | — | — |
| 2025 | 76° | 46° | 61° | — | — |
| 2024 | 76° | 49° | 62° | — | — |
| 2023 | 74° | 49° | 61° | — | — |
| 2022 | 57° | 48° | 53° | — | — |
| 2021 | 59° | 45° | 52° | — | — |
| 2020 | 65° | 47° | 56° | — | — |
| 2019 | 66° | 45° | 55° | — | — |
| 2018 | 75° | 47° | 61° | — | — |
| 2017 | 76° | 51° | 63° | — | — |
| 2016 | 64° | 53° | 59° | — | — |
| 2015 | 52° | 47° | 49° | — | — |
| 2014 | 64° | 49° | 56° | — | — |
| 2013 | 80° | 58° | 69° | — | — |
| 2012 | 85° | 63° | 74° | — | — |
| 2011 | 58° | 42° | 50° | — | — |
| 2010 | 53° | 42° | 48° | — | — |
| 2009warmest | 92° | 62° | 77° | — | — |
| 2008 | 56° | 39° | 47° | — | — |
| 2007 | 58° | 43° | 50° | — | — |
| 2006 | 63° | 47° | 55° | — | — |
| 2005 | 74° | 44° | 59° | — | — |
| 2004 | 58° | 45° | 51° | — | — |
| 2003 | 51° | 44° | 48° | — | — |
| 2002 | 72° | 43° | 57° | — | — |
| 2001 | 60° | 37° | 49° | — | — |
| 2000 | 58° | 49° | 53° | — | — |
| 1999 | 65° | 44° | 54° | — | — |
| 1998 | 84° | 54° | 69° | — | — |
| 1997 | 65° | 55° | 60° | — | — |
| 1996 | 61° | 46° | 53° | — | — |
| 1995coldest | 69° | 0° | 35° | — | — |
| 1994 | 63° | 49° | 56° | — | — |
| 1993 | 63° | 49° | 56° | — | — |
| 1989 | 69° | 53° | 61° | 0.28" | — |
| 1987 | 83° | 50° | 66° | — | — |
| 1986 | 85° | 53° | 69° | — | — |
| 1985 | 54° | 47° | 50° | 0.1" | — |
| 1984 | 65° | 42° | 53° | — | — |
| 1983 | 65° | 52° | 58° | 0.3" | — |
| 1982 | 78° | 60° | 69° | — | — |
| 1981 | 66° | 47° | 56° | — | — |
| 1980 | 67° | 44° | 55° | 0.53" | — |
| 1979 | 66° | 42° | 54° | — | — |
| 1978 | 60° | 40° | 50° | — | — |
| 1977 | 67° | 42° | 54° | — | — |
| 1976 | 76° | 40° | 58° | — | — |
| 1975 | 70° | 42° | 56° | — | — |
| 1974 | 68° | 40° | 54° | — | — |
| 1973 | 68° | 48° | 58° | — | — |
| 1972 | 62° | 41° | 52° | — | — |
| 1971 | 57° | 37° | 47° | 0.1" | — |
San Leandro, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Leandro, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
San Leandro, 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 San Leandro, CA
Most pleasant months in San Leandro, CA: August.