When to plant in Day Valley, CA
Planting dates worked out from Day Valley's own frost records, not a generic zone chart.
Safe to plant out
Mar 29
1 year in 10 has a later frost
Average last frost
Feb 16
about a 50% chance of a later one
Average first fall frost
Dec 8
1 year in 10 by Nov 19
Frost-free days
300
median, 1991–2020
Station used: Corralitos California · 7.6 km away · station 137 m, town 403 m. How we match towns to stations
The station sits 266 m lower than the town, so frost dates here may be off by a week or more. Check them against local experience.
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Feb 1 – Feb 15 | Mar 29 – Apr 12 | May 23 |
| Sweet pepper | Jan 18 – Feb 1 | Mar 29 – Apr 12 | May 28 |
| Lettuce (leaf) | Dec 15 – Dec 22 | Jan 19 – Feb 2 | Feb 28 |
| Peas | — | Jan 5 – Feb 2 | Mar 1 |
| Bush beans | — | Mar 22 – Apr 12 | May 11 |
| Carrot | — | Jan 26 – Mar 9 | Mar 27 |
| Beet | — | Jan 19 – Mar 2 | Mar 10 |
| Potato | — | Jan 26 – Feb 16 | Apr 6 |
| Kale | Dec 8 – Dec 22 | Jan 19 – Feb 2 | Mar 3 |
| Broccoli | Dec 8 – Dec 22 | Jan 19 – Feb 9 | Mar 20 |
| Cucumber | Mar 1 – Mar 8 | Mar 29 – Apr 12 | May 18 |
| Summer squash and zucchini | Mar 1 – Mar 8 | Mar 29 – Apr 12 | May 13 |
| Winter squash | Mar 1 – Mar 8 | Mar 29 – Apr 12 | Jun 17 |
| Sweet corn | — | Mar 22 – Apr 12 | May 21 |
| Onion (from sets) | — | Jan 19 – Feb 9 | Apr 19 |
| Garlic | — | Nov 24 – Dec 22 (fall) | following summer |
| Spinach | — | Jan 5 – Feb 2 | Feb 12 |
| Basil | Feb 15 – Mar 1 | Mar 29 – Apr 12 | May 25 |
Day Valley'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 |
|---|---|
| 1991 | Mar 11 |
| 1992 | Jan 24 |
| 1994 | Mar 23 |
| 1995 | Feb 15 |
| 1996 | Feb 26 |
| 1997 | Mar 4 |
| 1999 | Apr 28 |
| 2000 | Jan 2 |
| 2001 | Apr 8 |
| 2002 | Mar 18 |
| 2003 | Feb 9 |
| 2004 | Jan 5 |
| 2005 | Jan 15 |
| 2008 | Apr 21 |
| 2009 | Mar 10 |
| 2011 | Feb 28 |
| 2012 | Feb 28 |
| 2013 | Feb 20 |
| 2015 | Jan 3 |
| 2017 | Feb 24 |
| 2018 | Mar 5 |
| 2019 | Feb 23 |
| 2020 | Feb 3 |
| 2021 | Jan 26 |
| 2022 | Feb 26 |
| 2023 | Mar 2 |
| 2025 | Feb 10 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1992 | 325 |
| 1994 | 224 |
| 1995 | 318 |
| 1996 | 307 |
| 1997 | 281 |
| 1998 | 337 |
| 1999 | 231 |
| 2000 | 313 |
| 2001 | 266 |
| 2003 | 286 |
| 2004 | 327 |
| 2008 | 235 |
| 2009 | 271 |
| 2010 | 326 |
| 2011 | 278 |
| 2012 | 293 |
| 2013 | 286 |
| 2014 | 359 |
| 2015 | 326 |
| 2016 | 349 |
| 2017 | 299 |
| 2018 | 300 |
| 2019 | 310 |
| 2020 | 278 |
| 2021 | 325 |
| 2022 | 278 |
| 2023 | 303 |
| 2024 | 330 |
| 2025 | 323 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1992 | 18.0 °C |
| 1994 | 17.0 °C |
| 1995 | 17.4 °C |
| 1996 | 17.5 °C |
| 1997 | 18.8 °C |
| 1998 | 17.4 °C |
| 1999 | 16.6 °C |
| 2000 | 18.3 °C |
| 2001 | 18.3 °C |
| 2003 | 17.9 °C |
| 2004 | 18.1 °C |
| 2005 | 17.7 °C |
| 2008 | 18.0 °C |
| 2009 | 17.6 °C |
| 2010 | 15.9 °C |
| 2011 | 15.8 °C |
| 2012 | 16.4 °C |
| 2013 | 17.6 °C |
| 2014 | 17.7 °C |
| 2015 | 18.0 °C |
| 2016 | 17.5 °C |
| 2017 | 18.1 °C |
| 2018 | 17.1 °C |
| 2019 | 17.9 °C |
| 2020 | 17.9 °C |
| 2021 | 17.3 °C |
| 2022 | 18.1 °C |
| 2023 | 16.9 °C |
| 2024 | 17.7 °C |
| 2025 | 17.8 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Corralitos California (NOAA GHCN-Daily). Years with too many missing days are left out.