When to plant in Danville, CA
Planting dates worked out from Danville's own frost records, not a generic zone chart.
Safe to plant out
Apr 3
1 year in 10 has a later frost
Average last frost
Feb 18
about a 50% chance of a later one
Average first fall frost
Dec 2
1 year in 10 by Nov 16
Frost-free days
280
median, 1991–2020
Station used: Livermore Muni Ap · 21.6 km away · station 120 m, town 109 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 6 – Feb 20 | Apr 3 – Apr 17 | May 28 |
| Sweet pepper | Jan 23 – Feb 6 | Apr 3 – Apr 17 | Jun 2 |
| Lettuce (leaf) | Dec 17 – Dec 24 | Jan 21 – Feb 4 | Mar 2 |
| Peas | — | Jan 7 – Feb 4 | Mar 3 |
| Bush beans | — | Mar 27 – Apr 17 | May 16 |
| Carrot | — | Jan 28 – Mar 11 | Mar 29 |
| Beet | — | Jan 21 – Mar 4 | Mar 12 |
| Potato | — | Jan 28 – Feb 18 | Apr 8 |
| Kale | Dec 10 – Dec 24 | Jan 21 – Feb 4 | Mar 5 |
| Broccoli | Dec 10 – Dec 24 | Jan 21 – Feb 11 | Mar 22 |
| Cucumber | Mar 6 – Mar 13 | Apr 3 – Apr 17 | May 23 |
| Summer squash and zucchini | Mar 6 – Mar 13 | Apr 3 – Apr 17 | May 18 |
| Winter squash | Mar 6 – Mar 13 | Apr 3 – Apr 17 | Jun 22 |
| Sweet corn | — | Mar 27 – Apr 17 | May 26 |
| Onion (from sets) | — | Jan 21 – Feb 11 | Apr 21 |
| Garlic | — | Nov 18 – Dec 16 (fall) | following summer |
| Spinach | — | Jan 7 – Feb 4 | Feb 14 |
| Basil | Feb 20 – Mar 6 | Apr 3 – Apr 17 | May 30 |
Danville'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 |
|---|---|
| 1999 | Apr 9 |
| 2000 | Jan 7 |
| 2001 | Apr 8 |
| 2002 | Mar 19 |
| 2003 | Apr 5 |
| 2004 | Feb 12 |
| 2005 | Jan 31 |
| 2006 | Mar 13 |
| 2007 | Mar 2 |
| 2008 | Feb 4 |
| 2009 | Mar 10 |
| 2011 | Mar 1 |
| 2012 | Jan 19 |
| 2013 | Feb 25 |
| 2014 | Feb 1 |
| 2015 | Jan 3 |
| 2017 | Mar 2 |
| 2018 | Mar 18 |
| 2019 | Feb 23 |
| 2020 | Feb 5 |
| 2021 | Mar 16 |
| 2022 | Mar 7 |
| 2023 | Apr 4 |
| 2024 | Jan 11 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1999 | 239 |
| 2000 | 307 |
| 2001 | 246 |
| 2002 | 253 |
| 2003 | 230 |
| 2004 | 289 |
| 2005 | 299 |
| 2006 | 255 |
| 2007 | 264 |
| 2008 | 308 |
| 2009 | 249 |
| 2010 | 326 |
| 2011 | 279 |
| 2012 | 328 |
| 2013 | 281 |
| 2014 | 332 |
| 2015 | 326 |
| 2016 | 339 |
| 2017 | 278 |
| 2018 | 287 |
| 2019 | 278 |
| 2020 | 276 |
| 2021 | 269 |
| 2022 | 266 |
| 2023 | 236 |
| 2024 | 353 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1998 | 18.9 °C |
| 1999 | 18.3 °C |
| 2000 | 19.3 °C |
| 2001 | 19.6 °C |
| 2002 | 19.1 °C |
| 2003 | 19.1 °C |
| 2004 | 19.3 °C |
| 2005 | 19.1 °C |
| 2006 | 19.8 °C |
| 2007 | 19.3 °C |
| 2008 | 19.8 °C |
| 2009 | 19.9 °C |
| 2010 | 18.3 °C |
| 2011 | 18.8 °C |
| 2012 | 19.8 °C |
| 2013 | 20.7 °C |
| 2014 | 21.1 °C |
| 2015 | 21.4 °C |
| 2016 | 20.4 °C |
| 2017 | 20.5 °C |
| 2018 | 19.6 °C |
| 2019 | 20.0 °C |
| 2020 | 21.1 °C |
| 2021 | 20.6 °C |
| 2022 | 20.6 °C |
| 2023 | 19.5 °C |
| 2024 | 20.7 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Livermore Muni Ap (NOAA GHCN-Daily). Years with too many missing days are left out.