Frost dates for 95965 — Oroville, CA
Frost is light and occasional here — typically a few cold nights around midwinter (about 16 a year). Cover tender plants when frost is forecast.
How Oroville compares
- In a typical year, frost nights in Oroville fall between December 13 and January 30. In 1 year in 10 the first frost comes as early as November 21, or the last frost as late as March 3.
- Nearby Chico, CA, 29 km away, has a regular frost season (last frost Mar 4), a reminder of how much elevation and distance from the coast matter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 26 |
| 50% (median) | January 30 |
| 10% (safe for tender plants) | March 3 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 21 |
| 50% (median) | December 13 |
| 90% (late) | January 11 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Oroville, CA
Frost dates for 95965 — Oroville, CA — last frost Jan 30, first frost Dec 13, zone 9b. whenisthelastfrost.com
In mild climates, summer heat limits many crops as much as frost does. Use this calendar for spring planting and lean on fall and winter for cool-season crops.
When to plant vegetables in Oroville, CA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 7 – Nov 21 | Jan 2 – Jan 16 | — | — |
| Peppers | Nov 21 – Dec 5 | Feb 13 – Feb 27 | — | — |
| Eggplant | Nov 21 – Dec 5 | Feb 13 – Feb 27 | — | — |
| Tomatoes | Dec 5 – Dec 19 | Feb 6 – Feb 20 | — | — |
| Lettuce | Dec 5 – Dec 19 | Jan 9 – Jan 23 | Jan 2 – Feb 6 | Oct 18 – Nov 15 |
| Kale | Dec 5 – Dec 19 | Jan 2 – Jan 16 | Jan 2 – Jan 16 | Oct 4 – Oct 25 |
| Broccoli | Dec 5 – Dec 19 | Jan 16 – Jan 30 | — | Sep 6 – Sep 27 |
| Cabbage | Dec 5 – Dec 19 | Jan 9 – Jan 23 | — | Sep 6 – Sep 27 |
| Cauliflower | Dec 5 – Dec 19 | Jan 16 – Jan 30 | — | Sep 6 – Sep 27 |
| Okra | Dec 19 – Jan 2 | Feb 20 – Mar 6 | Feb 20 – Mar 6 | — |
| Basil | Dec 19 – Jan 2 | Feb 6 – Feb 20 | — | — |
| Peas | — | — | Dec 19 – Jan 9 | Sep 20 – Oct 11 |
| Spinach | — | — | Dec 19 – Jan 9 | Oct 18 – Nov 8 |
| Radishes | — | — | Dec 26 – Feb 6 | Nov 1 – Nov 22 |
| Cucumbers | Jan 2 – Jan 9 | Feb 13 – Feb 20 | Feb 6 – Feb 20 | Sep 27 – Oct 11 |
| Zucchini & Summer Squash | Jan 2 – Jan 9 | — | Feb 6 – Feb 20 | Oct 4 – Oct 18 |
| Winter Squash & Pumpkins | Jan 2 – Jan 9 | — | Feb 6 – Feb 20 | — |
| Melons & Watermelon | Jan 2 – Jan 9 | Feb 13 – Feb 27 | — | — |
| Carrots | — | — | Jan 9 – Feb 6 | Sep 20 – Oct 4 |
| Beets | — | — | Jan 9 – Feb 6 | Oct 4 – Oct 18 |
| Potatoes | — | — | Jan 9 – Jan 30 | — |
| Swiss Chard | — | — | Jan 16 – Feb 13 | Oct 4 – Oct 18 |
| Cilantro | — | — | Jan 16 – Feb 6 | Oct 18 – Nov 8 |
| Green Beans | — | — | Feb 6 – Feb 27 | Sep 27 – Oct 11 |
| Sweet Corn | — | — | Feb 6 – Feb 20 | — |
| Sweet Potatoes | — | Feb 13 – Mar 6 | — | — |
| Garlic | — | — | — | Nov 29 – Jan 3 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Oroville, CA weather station, 10 km away (elevation 171 ft (52 m)).
ZIP codes in Oroville: 95965 95966
Frost dates near Oroville
- Canyon Dam Jan 30 · Dec 13
- Paradise Feb 7 · Dec 18
- Nelson Jan 29 · Dec 7
- Durham Mar 4 · Nov 17
- Palermo Jan 29 · Dec 7
- Richvale Jan 29 · Dec 7
- Berry Creek Feb 7 · Dec 18
- Biggs Jan 29 · Dec 7
Frequently asked questions
When is the last frost in Oroville, CA?
The median last spring frost in Oroville, CA is January 30. There is still about a 10% chance of frost after March 3, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Oroville, CA?
The median first fall frost is December 13, with about a 10% chance of frost before November 21.
How long is the growing season in Oroville, CA?
About 317 days between the median last spring frost and first fall frost.
What planting zone is Oroville, CA?
Oroville, CA is in USDA hardiness zone 9b.