When to plant in Oroville East, CA
Planting dates worked out from Oroville East's own frost records, not a generic zone chart.
Safe to plant out
Apr 8
1 year in 10 has a later frost
Average last frost
Feb 28
about a 50% chance of a later one
Average first fall frost
Dec 6
1 year in 10 by Nov 20
Frost-free days
285
median, 1991–2020
Station used: Bangor California · 14.8 km away · station 245 m, town 295 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 11 – Feb 25 | Apr 8 – Apr 22 | Jun 2 |
| Sweet pepper | Jan 28 – Feb 11 | Apr 8 – Apr 22 | Jun 7 |
| Lettuce (leaf) | Dec 27 – Jan 3 | Jan 31 – Feb 14 | Mar 12 |
| Peas | — | Jan 17 – Feb 14 | Mar 13 |
| Bush beans | — | Apr 1 – Apr 22 | May 21 |
| Carrot | — | Feb 7 – Mar 21 | Apr 8 |
| Beet | — | Jan 31 – Mar 14 | Mar 22 |
| Potato | — | Feb 7 – Feb 28 | Apr 18 |
| Kale | Dec 20 – Jan 3 | Jan 31 – Feb 14 | Mar 15 |
| Broccoli | Dec 20 – Jan 3 | Jan 31 – Feb 21 | Apr 1 |
| Cucumber | Mar 11 – Mar 18 | Apr 8 – Apr 22 | May 28 |
| Summer squash and zucchini | Mar 11 – Mar 18 | Apr 8 – Apr 22 | May 23 |
| Winter squash | Mar 11 – Mar 18 | Apr 8 – Apr 22 | Jun 27 |
| Sweet corn | — | Apr 1 – Apr 22 | May 31 |
| Onion (from sets) | — | Jan 31 – Feb 21 | May 1 |
| Garlic | — | Nov 17 – Dec 15 (fall) | following summer |
| Spinach | — | Jan 17 – Feb 14 | Feb 24 |
| Basil | Feb 25 – Mar 11 | Apr 8 – Apr 22 | Jun 4 |
Oroville East'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 |
|---|---|
| 1992 | Jan 24 |
| 1993 | Jan 25 |
| 1994 | Mar 23 |
| 1995 | Feb 15 |
| 1996 | Mar 23 |
| 1997 | Jan 14 |
| 1998 | Mar 4 |
| 1999 | Apr 9 |
| 2000 | Feb 24 |
| 2001 | Apr 8 |
| 2002 | Mar 15 |
| 2003 | Apr 5 |
| 2004 | Jan 25 |
| 2005 | Jan 20 |
| 2006 | Feb 21 |
| 2007 | Apr 18 |
| 2008 | Apr 20 |
| 2009 | Mar 10 |
| 2011 | Apr 8 |
| 2012 | Apr 6 |
| 2013 | Feb 21 |
| 2014 | Feb 5 |
| 2015 | Jan 3 |
| 2016 | Feb 3 |
| 2017 | Feb 28 |
| 2018 | Mar 5 |
| 2019 | Feb 21 |
| 2020 | Mar 26 |
| 2021 | Mar 16 |
| 2022 | Apr 12 |
| 2023 | Apr 4 |
| 2024 | Jan 7 |
| 2025 | Feb 12 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1992 | 326 |
| 1993 | 300 |
| 1994 | 234 |
| 1995 | 308 |
| 1996 | 253 |
| 1997 | 328 |
| 1998 | 274 |
| 1999 | 250 |
| 2000 | 259 |
| 2001 | 239 |
| 2002 | 290 |
| 2003 | 230 |
| 2004 | 307 |
| 2005 | 310 |
| 2006 | 276 |
| 2007 | 225 |
| 2008 | 230 |
| 2009 | 270 |
| 2010 | 325 |
| 2011 | 248 |
| 2012 | 251 |
| 2013 | 285 |
| 2014 | 324 |
| 2015 | 326 |
| 2016 | 316 |
| 2017 | 296 |
| 2018 | 300 |
| 2019 | 312 |
| 2020 | 228 |
| 2021 | 275 |
| 2022 | 245 |
| 2023 | 236 |
| 2024 | 336 |
| 2025 | 303 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1992 | 22.4 °C |
| 1993 | 20.5 °C |
| 1994 | 21.4 °C |
| 1995 | 20.0 °C |
| 1996 | 21.8 °C |
| 1998 | 20.1 °C |
| 1999 | 20.5 °C |
| 2000 | 21.4 °C |
| 2001 | 21.9 °C |
| 2002 | 21.6 °C |
| 2003 | 21.2 °C |
| 2004 | 21.8 °C |
| 2005 | 21.2 °C |
| 2006 | 22.2 °C |
| 2007 | 21.3 °C |
| 2008 | 22.1 °C |
| 2009 | 22.0 °C |
| 2010 | 20.4 °C |
| 2011 | 20.6 °C |
| 2012 | 22.2 °C |
| 2013 | 22.3 °C |
| 2014 | 22.8 °C |
| 2015 | 22.3 °C |
| 2016 | 22.4 °C |
| 2017 | 22.9 °C |
| 2018 | 22.2 °C |
| 2019 | 22.0 °C |
| 2020 | 23.1 °C |
| 2021 | 23.6 °C |
| 2022 | 22.8 °C |
| 2023 | 21.6 °C |
| 2024 | 23.3 °C |
| 2025 | 22.6 °C |
What this means for you: Since 1992, Oroville East's last spring frost has come about 1 day later per decade, on average. The frost-free season has grown by about 2 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Bangor California (NOAA GHCN-Daily). Years with too many missing days are left out.