When to plant in Coronado, CA
Planting dates worked out from Coronado's own frost records, not a generic zone chart.
Frost is rare in Coronado: in 26 of the last 26 springs there was none at all. Frost dates matter less here than heat, so the planting table below is left out.
Safe to plant out
Jan 1
1 year in 10 has a later frost
Average last frost
Jan 1
about a 50% chance of a later one
Average first fall frost
Dec 31
1 year in 10 by Dec 31
Frost-free days
363
median, 1991–2020
Station used: N Is Nas · 2.6 km away · station 4 m, town 5 m. How we match towns to stations
Coronado's weather over time
How the growing season has shifted here, year by year, from the station's own records.
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1946 | 363 |
| 1947 | 363 |
| 1948 | 363 |
| 1949 | 360 |
| 1950 | 363 |
| 1951 | 363 |
| 1952 | 363 |
| 1953 | 363 |
| 1954 | 363 |
| 1955 | 363 |
| 1956 | 363 |
| 1957 | 363 |
| 1958 | 363 |
| 1959 | 363 |
| 1960 | 363 |
| 1961 | 363 |
| 1962 | 363 |
| 1963 | 351 |
| 1964 | 363 |
| 1965 | 363 |
| 1966 | 363 |
| 1967 | 363 |
| 1968 | 363 |
| 1969 | 363 |
| 1970 | 363 |
| 1971 | 363 |
| 1972 | 363 |
| 1973 | 363 |
| 1974 | 363 |
| 1975 | 363 |
| 1976 | 363 |
| 1977 | 363 |
| 1978 | 363 |
| 1979 | 363 |
| 1980 | 363 |
| 1981 | 363 |
| 1982 | 363 |
| 1984 | 363 |
| 1985 | 363 |
| 1987 | 363 |
| 1988 | 363 |
| 1989 | 363 |
| 1990 | 363 |
| 1991 | 363 |
| 1992 | 363 |
| 1993 | 363 |
| 1994 | 363 |
| 1995 | 363 |
| 1996 | 363 |
| 1997 | 363 |
| 1998 | 363 |
| 2001 | 363 |
| 2002 | 363 |
| 2003 | 363 |
| 2004 | 363 |
| 2008 | 363 |
| 2009 | 363 |
| 2010 | 363 |
| 2011 | 363 |
| 2012 | 363 |
| 2013 | 363 |
| 2014 | 363 |
| 2016 | 363 |
| 2017 | 363 |
| 2018 | 363 |
| 2019 | 363 |
| 2020 | 363 |
| 2021 | 363 |
| 2022 | 363 |
| 2023 | 363 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1945 | 18.2 °C |
| 1946 | 19.1 °C |
| 1947 | 19.1 °C |
| 1948 | 17.6 °C |
| 1949 | 18.4 °C |
| 1950 | 17.9 °C |
| 1951 | 17.9 °C |
| 1952 | 18.4 °C |
| 1953 | 18.1 °C |
| 1954 | 18.7 °C |
| 1955 | 18.4 °C |
| 1956 | 18.6 °C |
| 1957 | 19.4 °C |
| 1958 | 20.0 °C |
| 1959 | 20.1 °C |
| 1960 | 19.3 °C |
| 1961 | 18.6 °C |
| 1962 | 18.3 °C |
| 1963 | 19.0 °C |
| 1964 | 18.1 °C |
| 1965 | 17.9 °C |
| 1966 | 19.1 °C |
| 1967 | 18.7 °C |
| 1968 | 19.4 °C |
| 1969 | 19.4 °C |
| 1970 | 19.3 °C |
| 1971 | 18.7 °C |
| 1972 | 19.6 °C |
| 1973 | 18.8 °C |
| 1974 | 19.3 °C |
| 1975 | 17.4 °C |
| 1976 | 19.4 °C |
| 1977 | 18.9 °C |
| 1978 | 19.6 °C |
| 1979 | 19.9 °C |
| 1980 | 19.5 °C |
| 1981 | 20.6 °C |
| 1982 | 20.8 °C |
| 1983 | 20.2 °C |
| 1984 | 21.3 °C |
| 1985 | 20.0 °C |
| 1986 | 19.8 °C |
| 1987 | 19.6 °C |
| 1988 | 19.6 °C |
| 1989 | 19.4 °C |
| 1990 | 19.8 °C |
| 1991 | 18.3 °C |
| 1992 | 21.3 °C |
| 1993 | 19.4 °C |
| 1994 | 19.1 °C |
| 1995 | 18.6 °C |
| 1996 | 19.8 °C |
| 1997 | 20.4 °C |
| 1998 | 19.1 °C |
| 2001 | 18.7 °C |
| 2002 | 18.4 °C |
| 2003 | 18.8 °C |
| 2004 | 19.4 °C |
| 2005 | 18.3 °C |
| 2008 | 21.2 °C |
| 2009 | 21.6 °C |
| 2010 | 19.2 °C |
| 2011 | 20.3 °C |
| 2012 | 20.8 °C |
| 2013 | 21.2 °C |
| 2014 | 22.1 °C |
| 2015 | 20.1 °C |
| 2016 | 19.2 °C |
| 2017 | 20.1 °C |
| 2018 | 20.1 °C |
| 2019 | 19.4 °C |
| 2020 | 20.8 °C |
| 2021 | 19.3 °C |
| 2022 | 19.9 °C |
| 2023 | 18.8 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from N Is Nas (NOAA GHCN-Daily). Years with too many missing days are left out.