When to plant in Ladera, CA
Planting dates worked out from Ladera's own frost records, not a generic zone chart.
Frost is rare in Ladera: in 12 of the last 20 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
Feb 23
1 year in 10 has a later frost
Average last frost
Jan 16
about a 50% chance of a later one
Average first fall frost
Dec 21
1 year in 10 by Nov 30
Frost-free days
337
median, 1991–2020
Station used: Los Altos California · 6.5 km away · station 197 m, town 94 m. How we match towns to stations
Ladera'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 | Jan 24 |
| 2009 | Mar 10 |
| 2011 | Feb 27 |
| 2012 | Jan 18 |
| 2013 | Jan 16 |
| 2017 | Jan 6 |
| 2018 | Feb 23 |
| 2019 | Feb 22 |
| 2022 | Feb 25 |
| 2023 | Jan 30 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1998 | 352 |
| 1999 | 340 |
| 2000 | 363 |
| 2003 | 363 |
| 2004 | 332 |
| 2005 | 363 |
| 2009 | 272 |
| 2010 | 326 |
| 2011 | 306 |
| 2012 | 334 |
| 2013 | 321 |
| 2014 | 363 |
| 2015 | 329 |
| 2016 | 350 |
| 2017 | 358 |
| 2018 | 310 |
| 2019 | 311 |
| 2020 | 363 |
| 2021 | 363 |
| 2022 | 308 |
| 2023 | 334 |
| 2024 | 363 |
| 2025 | 363 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1998 | 18.2 °C |
| 1999 | 18.1 °C |
| 2000 | 18.9 °C |
| 2002 | 18.9 °C |
| 2003 | 19.1 °C |
| 2004 | 19.7 °C |
| 2005 | 18.7 °C |
| 2006 | 19.3 °C |
| 2009 | 19.6 °C |
| 2010 | 17.6 °C |
| 2011 | 17.5 °C |
| 2012 | 17.9 °C |
| 2013 | 19.2 °C |
| 2014 | 19.5 °C |
| 2015 | 19.1 °C |
| 2016 | 18.9 °C |
| 2017 | 19.4 °C |
| 2018 | 18.5 °C |
| 2019 | 19.1 °C |
| 2020 | 19.9 °C |
| 2021 | 19.2 °C |
| 2022 | 19.3 °C |
| 2023 | 18.1 °C |
| 2024 | 19.2 °C |
| 2025 | 18.7 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Los Altos California (NOAA GHCN-Daily). Years with too many missing days are left out.