When to plant in San Leandro, CA
Planting dates worked out from San Leandro's own frost records, not a generic zone chart.
Frost is rare in San Leandro: in 10 of the last 21 springs there was none at all. Frost dates matter less here than heat, so the planting table below is left out.
Station used: Oakland Intl Ap · 6.8 km away · station 2 m, town 15 m. How we match towns to stations
San Leandro's weather over time
How the growing season has shifted here, year by year, from the station's own records.
See the data as a table
| Year | Last spring frost |
|---|---|
| 1948 | Feb 12 |
| 1949 | Feb 14 |
| 1950 | Feb 1 |
| 1951 | Jan 31 |
| 1952 | Jan 3 |
| 1953 | Mar 3 |
| 1954 | Jan 25 |
| 1955 | Feb 28 |
| 1956 | Feb 18 |
| 1957 | Feb 4 |
| 1960 | Jan 2 |
| 1961 | Jan 20 |
| 1962 | Feb 27 |
| 1963 | Jan 21 |
| 1973 | Jan 7 |
| 1975 | Jan 30 |
| 1976 | Feb 5 |
| 2001 | Jan 18 |
| 2002 | Jan 31 |
| 2003 | Feb 9 |
| 2004 | Jan 4 |
| 2007 | Jan 18 |
| 2009 | Jan 4 |
| 2011 | Feb 27 |
| 2012 | Jan 18 |
| 2013 | Jan 13 |
| 2015 | Jan 3 |
| 2018 | Feb 20 |
| 2022 | Jan 2 |
| 2023 | Jan 31 |
See the data as a table
| Year | Frost-free days |
|---|---|
| 1948 | 312 |
| 1949 | 299 |
| 1950 | 332 |
| 1951 | 311 |
| 1952 | 361 |
| 1953 | 302 |
| 1954 | 334 |
| 1955 | 305 |
| 1956 | 292 |
| 1957 | 329 |
| 1958 | 363 |
| 1959 | 363 |
| 1960 | 338 |
| 1961 | 344 |
| 1962 | 302 |
| 1963 | 343 |
| 1964 | 363 |
| 1965 | 353 |
| 1966 | 363 |
| 1967 | 363 |
| 1968 | 353 |
| 1969 | 363 |
| 1970 | 363 |
| 1971 | 363 |
| 1972 | 340 |
| 1973 | 357 |
| 1974 | 363 |
| 1975 | 334 |
| 1976 | 328 |
| 1977 | 363 |
| 1978 | 352 |
| 1979 | 363 |
| 1980 | 363 |
| 1984 | 363 |
| 1985 | 363 |
| 2000 | 320 |
| 2001 | 346 |
| 2002 | 333 |
| 2003 | 324 |
| 2004 | 329 |
| 2005 | 329 |
| 2006 | 350 |
| 2007 | 346 |
| 2008 | 363 |
| 2009 | 337 |
| 2010 | 327 |
| 2011 | 284 |
| 2012 | 346 |
| 2013 | 325 |
| 2014 | 363 |
| 2015 | 357 |
| 2016 | 363 |
| 2017 | 354 |
| 2018 | 313 |
| 2019 | 363 |
| 2020 | 363 |
| 2021 | 363 |
| 2022 | 349 |
| 2023 | 333 |
| 2024 | 363 |
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1948 | 15.4 °C |
| 1949 | 16.7 °C |
| 1950 | 16.3 °C |
| 1951 | 15.9 °C |
| 1952 | 16.6 °C |
| 1953 | 16.0 °C |
| 1954 | 16.4 °C |
| 1955 | 14.8 °C |
| 1956 | 16.1 °C |
| 1957 | 17.6 °C |
| 1958 | 17.8 °C |
| 1959 | 17.4 °C |
| 1960 | 16.6 °C |
| 1961 | 17.0 °C |
| 1962 | 16.3 °C |
| 1963 | 16.4 °C |
| 1964 | 15.6 °C |
| 1965 | 16.1 °C |
| 1966 | 17.1 °C |
| 1967 | 16.0 °C |
| 1968 | 16.8 °C |
| 1969 | 16.1 °C |
| 1970 | 15.9 °C |
| 1971 | 16.0 °C |
| 1972 | 16.7 °C |
| 1973 | 16.4 °C |
| 1974 | 15.6 °C |
| 1975 | 15.8 °C |
| 1976 | 16.5 °C |
| 1977 | 16.9 °C |
| 1978 | 17.4 °C |
| 1979 | 17.3 °C |
| 1980 | 16.4 °C |
| 1984 | 17.3 °C |
| 1985 | 16.6 °C |
| 2000 | 16.4 °C |
| 2001 | 16.3 °C |
| 2002 | 16.3 °C |
| 2003 | 16.9 °C |
| 2004 | 17.2 °C |
| 2005 | 16.3 °C |
| 2006 | 16.7 °C |
| 2007 | 16.6 °C |
| 2008 | 16.3 °C |
| 2009 | 16.6 °C |
| 2010 | 16.6 °C |
| 2011 | 15.6 °C |
| 2012 | 15.6 °C |
| 2013 | 17.6 °C |
| 2014 | 17.9 °C |
| 2015 | 17.6 °C |
| 2016 | 17.7 °C |
| 2017 | 18.0 °C |
| 2018 | 16.2 °C |
| 2019 | 18.3 °C |
| 2020 | 18.9 °C |
| 2021 | 16.9 °C |
| 2022 | 17.2 °C |
| 2023 | 16.5 °C |
| 2024 | 17.5 °C |
What this means for you: Since 1948, San Leandro's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 2 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Oakland Intl Ap (NOAA GHCN-Daily). Years with too many missing days are left out.