Frost dates for 91350 — Santa Clarita, CA
Frost is light and occasional here — typically a few cold nights around midwinter (about 1 a year). Cover tender plants when frost is forecast.
How Santa Clarita compares
- In a typical year, frost nights in Santa Clarita fall between January 1 and January 8. In 1 year in 10 the first frost comes as early as November 30, or the last frost as late as March 10.
- Compared with Glendale, CA, 39 km away, the last frost here is 6 days later than there.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 8 |
| 50% (median) | January 8 |
| 10% (safe for tender plants) | March 10 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 30 |
| 50% (median) | January 1 |
| 90% (late) | February 25 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Gardening where frost is rare
Santa Clarita, CA only freezes on a few winter nights, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
About these dates
Based on 1991–2020 NOAA climate normals for the Newhall 5nw, CA weather station, 10 km away (elevation 1,765 ft (538 m)).
ZIP codes in Santa Clarita: 91350 91380 91382 91383 91390
Frost dates near Santa Clarita
- Canyon Country Jan 8 · Jan 1
- Valencia Jan 8 · Jan 1
- Newhall Jan 8 · Jan 1
- Stevenson Ranch Jan 8 · Jan 1
- Castaic Jan 8 · Jan 1
- Sylmar Jan 2 · Jan 1
- San Fernando Jan 2 · Jan 1
- Granada Hills Jan 2 · Jan 1
Frequently asked questions
When is the last frost in Santa Clarita, CA?
The median last spring frost in Santa Clarita, CA is January 8. There is still about a 10% chance of frost after March 10, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Santa Clarita, CA?
The median first fall frost is January 1, with about a 10% chance of frost before November 30.
How long is the growing season in Santa Clarita, CA?
About 358 days between the median last spring frost and first fall frost.
What planting zone is Santa Clarita, CA?
Santa Clarita, CA is in USDA hardiness zone 10a.