When to plant in Lake Arrowhead, CA
Planting dates worked out from Lake Arrowhead's own frost records, not a generic zone chart.
Safe to plant out
Jun 9
1 year in 10 has a later frost
Average last frost
May 21
about a 50% chance of a later one
Average first fall frost
Oct 17
1 year in 10 by Sep 23
Frost-free days
139
median, 1991–2020
Station used: Converse California · 26.1 km away · station 1712 m, town 1577 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 | Apr 14 – Apr 28 | Jun 9 – Jun 23 | Aug 3 |
| Sweet pepper | Mar 31 – Apr 14 | Jun 9 – Jun 23 | Aug 8 |
| Lettuce (leaf) | Mar 19 – Mar 26 | Apr 23 – May 7 | Jun 2 |
| Peas | — | Apr 9 – May 7 | Jun 3 |
| Bush beans | — | Jun 2 – Jun 23 | Jul 22 |
| Carrot | — | Apr 30 – Jun 11 | Jun 29 |
| Beet | — | Apr 23 – Jun 4 | Jun 12 |
| Potato | — | Apr 30 – May 21 | Jul 9 |
| Kale | Mar 12 – Mar 26 | Apr 23 – May 7 | Jun 5 |
| Broccoli | Mar 12 – Mar 26 | Apr 23 – May 14 | Jun 22 |
| Cucumber | May 12 – May 19 | Jun 9 – Jun 23 | Jul 29 |
| Summer squash and zucchini | May 12 – May 19 | Jun 9 – Jun 23 | Jul 24 |
| Winter squash | May 12 – May 19 | Jun 9 – Jun 23 | Aug 28 |
| Sweet corn | — | Jun 2 – Jun 23 | Aug 1 |
| Onion (from sets) | — | Apr 23 – May 14 | Jul 22 |
| Garlic | — | Oct 3 – Oct 31 (fall) | following summer |
| Spinach | — | Apr 9 – May 7 | May 17 |
| Basil | Apr 28 – May 12 | Jun 9 – Jun 23 | Aug 5 |
Lake Arrowhead'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 |
|---|---|
| 1998 | Jun 9 |
| 1999 | Jun 5 |
| 2000 | Apr 19 |
| 2001 | Apr 22 |
| 2002 | May 22 |
| 2003 | May 11 |
| 2004 | Jun 9 |
| 2005 | May 11 |
| 2006 | May 28 |
| 2007 | May 3 |
| 2008 | May 29 |
| 2009 | Jun 7 |
| 2011 | Jun 2 |
| 2013 | Apr 25 |
| 2014 | May 21 |
| 2015 | May 18 |
| 2016 | May 25 |
| 2017 | Jun 12 |
| 2018 | May 26 |
| 2019 | May 27 |
| 2020 | May 20 |
| 2021 | May 23 |
| 2022 | May 12 |
| 2023 | May 26 |
| 2024 | May 6 |
| 2025 | Apr 28 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1998 | 107 |
| 1999 | 155 |
| 2000 | 176 |
| 2001 | 203 |
| 2002 | 131 |
| 2003 | 173 |
| 2004 | 102 |
| 2005 | 198 |
| 2006 | 130 |
| 2007 | 139 |
| 2008 | 134 |
| 2009 | 118 |
| 2011 | 125 |
| 2013 | 166 |
| 2014 | 163 |
| 2015 | 168 |
| 2016 | 175 |
| 2017 | 101 |
| 2018 | 137 |
| 2019 | 124 |
| 2020 | 158 |
| 2021 | 141 |
| 2022 | 174 |
| 2023 | 167 |
| 2024 | 133 |
| 2025 | 203 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1998 | 14.2 °C |
| 1999 | 15.4 °C |
| 2000 | 18.2 °C |
| 2001 | 17.3 °C |
| 2002 | 17.0 °C |
| 2003 | 16.8 °C |
| 2004 | 16.4 °C |
| 2005 | 15.8 °C |
| 2006 | 17.0 °C |
| 2007 | 16.6 °C |
| 2008 | 16.9 °C |
| 2009 | 17.0 °C |
| 2010 | 15.8 °C |
| 2011 | 15.8 °C |
| 2013 | 17.6 °C |
| 2014 | 17.1 °C |
| 2015 | 16.2 °C |
| 2016 | 16.8 °C |
| 2017 | 17.3 °C |
| 2018 | 17.4 °C |
| 2019 | 15.9 °C |
| 2020 | 17.5 °C |
| 2021 | 18.4 °C |
| 2022 | 17.9 °C |
| 2023 | 16.0 °C |
| 2024 | 17.6 °C |
| 2025 | 16.8 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Converse California (NOAA GHCN-Daily). Years with too many missing days are left out.