When to plant in Riverdale, CA
Planting dates worked out from Riverdale's own frost records, not a generic zone chart.
Safe to plant out
Apr 14
1 year in 10 has a later frost
Average last frost
Mar 2
about a 50% chance of a later one
Average first fall frost
Nov 22
1 year in 10 by Nov 4
Frost-free days
270
median, 1991–2020
Station used: Lemoore Reeves Nas · 13.6 km away · station 71 m, town 68 m. How we match towns to stations
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Feb 17 – Mar 3 | Apr 14 – Apr 28 | Jun 8 |
| Sweet pepper | Feb 3 – Feb 17 | Apr 14 – Apr 28 | Jun 13 |
| Lettuce (leaf) | Dec 29 – Jan 5 | Feb 2 – Feb 16 | Mar 14 |
| Peas | — | Jan 19 – Feb 16 | Mar 15 |
| Bush beans | — | Apr 7 – Apr 28 | May 27 |
| Carrot | — | Feb 9 – Mar 23 | Apr 10 |
| Beet | — | Feb 2 – Mar 16 | Mar 24 |
| Potato | — | Feb 9 – Mar 2 | Apr 20 |
| Kale | Dec 22 – Jan 5 | Feb 2 – Feb 16 | Mar 17 |
| Broccoli | Dec 22 – Jan 5 | Feb 2 – Feb 23 | Apr 3 |
| Cucumber | Mar 17 – Mar 24 | Apr 14 – Apr 28 | Jun 3 |
| Summer squash and zucchini | Mar 17 – Mar 24 | Apr 14 – Apr 28 | May 29 |
| Winter squash | Mar 17 – Mar 24 | Apr 14 – Apr 28 | Jul 3 |
| Sweet corn | — | Apr 7 – Apr 28 | Jun 6 |
| Onion (from sets) | — | Feb 2 – Feb 23 | May 3 |
| Garlic | — | Nov 8 – Dec 6 (fall) | following summer |
| Spinach | — | Jan 19 – Feb 16 | Feb 26 |
| Basil | Mar 3 – Mar 17 | Apr 14 – Apr 28 | Jun 10 |
Riverdale's weather over time
How the growing season has shifted here, year by year, from the station's own records.
Each year's last spring frostLong-term trend
See the data as a table
| Year | Last spring frost |
|---|---|
| 1962 | Mar 13 |
| 1963 | Apr 2 |
| 1964 | Mar 25 |
| 1965 | Mar 19 |
| 1966 | Apr 20 |
| 1967 | Apr 29 |
| 1968 | Feb 1 |
| 1969 | Mar 14 |
| 1970 | Apr 29 |
| 1971 | Mar 7 |
| 1972 | Mar 28 |
| 1973 | Apr 4 |
| 1974 | Mar 4 |
| 1975 | Apr 7 |
| 1976 | Mar 6 |
| 1977 | Mar 31 |
| 1978 | Jan 26 |
| 1979 | Apr 18 |
| 1980 | Feb 12 |
| 1982 | Feb 24 |
| 1984 | Feb 23 |
| 1985 | Mar 26 |
| 1986 | Feb 9 |
| 1987 | Feb 27 |
| 1988 | Feb 5 |
| 1989 | Feb 15 |
| 1990 | Feb 19 |
| 1991 | Feb 1 |
| 1992 | Jan 14 |
| 1993 | Jan 25 |
| 1994 | Jan 31 |
| 1996 | Jan 26 |
| 1997 | Apr 3 |
| 1998 | Mar 7 |
| 2001 | Apr 10 |
| 2002 | Mar 19 |
| 2003 | Feb 10 |
| 2004 | Feb 10 |
| 2005 | Feb 3 |
| 2007 | Apr 19 |
| 2008 | Apr 21 |
| 2009 | Apr 16 |
| 2010 | Mar 14 |
| 2011 | Mar 18 |
| 2012 | Apr 6 |
| 2015 | Feb 25 |
| 2016 | Feb 4 |
| 2017 | Mar 7 |
| 2018 | Mar 19 |
| 2019 | Mar 14 |
| 2020 | Mar 3 |
| 2021 | Mar 16 |
| 2022 | Mar 11 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1962 | 249 |
| 1963 | 219 |
| 1964 | 235 |
| 1965 | 270 |
| 1966 | 216 |
| 1967 | 213 |
| 1968 | 285 |
| 1969 | 248 |
| 1970 | 205 |
| 1971 | 235 |
| 1972 | 216 |
| 1973 | 213 |
| 1974 | 263 |
| 1975 | 218 |
| 1976 | 266 |
| 1977 | 220 |
| 1978 | 291 |
| 1979 | 215 |
| 1980 | 276 |
| 1981 | 332 |
| 1982 | 280 |
| 1983 | 324 |
| 1984 | 293 |
| 1985 | 231 |
| 1986 | 289 |
| 1987 | 272 |
| 1988 | 287 |
| 1989 | 285 |
| 1990 | 260 |
| 1991 | 300 |
| 1992 | 300 |
| 1993 | 293 |
| 1994 | 286 |
| 1995 | 363 |
| 1996 | 273 |
| 1997 | 249 |
| 2001 | 230 |
| 2002 | 274 |
| 2003 | 266 |
| 2004 | 290 |
| 2005 | 296 |
| 2007 | 216 |
| 2008 | 232 |
| 2009 | 210 |
| 2011 | 231 |
| 2015 | 259 |
| 2016 | 285 |
| 2019 | 229 |
| 2020 | 250 |
| 2021 | 253 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1962 | 22.3 °C |
| 1963 | 21.4 °C |
| 1964 | 21.7 °C |
| 1965 | 22.1 °C |
| 1966 | 22.9 °C |
| 1967 | 22.8 °C |
| 1968 | 23.4 °C |
| 1969 | 22.4 °C |
| 1970 | 22.2 °C |
| 1971 | 22.3 °C |
| 1972 | 23.0 °C |
| 1973 | 22.8 °C |
| 1974 | 23.6 °C |
| 1975 | 22.9 °C |
| 1976 | 22.5 °C |
| 1977 | 22.9 °C |
| 1978 | 22.3 °C |
| 1979 | 22.9 °C |
| 1980 | 21.3 °C |
| 1981 | 24.3 °C |
| 1982 | 22.5 °C |
| 1983 | 22.8 °C |
| 1984 | 24.4 °C |
| 1985 | 23.3 °C |
| 1986 | 23.0 °C |
| 1987 | 22.6 °C |
| 1988 | 23.7 °C |
| 1989 | 23.4 °C |
| 1990 | 23.4 °C |
| 1991 | 23.2 °C |
| 1992 | 24.8 °C |
| 1993 | 22.4 °C |
| 1994 | 23.7 °C |
| 1995 | 23.1 °C |
| 1996 | 24.1 °C |
| 1997 | 22.7 °C |
| 1998 | 20.7 °C |
| 2001 | 22.6 °C |
| 2002 | 22.9 °C |
| 2003 | 23.3 °C |
| 2004 | 23.1 °C |
| 2005 | 21.5 °C |
| 2007 | 22.7 °C |
| 2008 | 23.1 °C |
| 2009 | 23.7 °C |
| 2010 | 21.6 °C |
| 2011 | 21.8 °C |
| 2012 | 23.0 °C |
| 2015 | 23.8 °C |
| 2016 | 23.9 °C |
| 2017 | 24.3 °C |
| 2018 | 23.7 °C |
| 2019 | 23.2 °C |
| 2020 | 24.1 °C |
| 2021 | 24.9 °C |
What this means for you: Since 1962, Riverdale's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 3 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Lemoore Reeves Nas (NOAA GHCN-Daily). Years with too many missing days are left out.