Frost dates for 92557 — Moreno Valley, CA
Last spring frostRaremost years have none
First fall frostRaremost years have none
Hardiness zone9bZone 9b
Gardening where frost is rare
Moreno Valley, CA rarely or never drops to freezing, 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.
How Moreno Valley compares
- Nearby Riverside, CA, 14 km away, gets only light, occasional frost, a reminder of how much elevation and distance from the coast matter.
About these dates
Based on 1991–2020 NOAA climate normals for the March Afb, CA weather station, 6 km away (elevation 1,516 ft (462 m)).
ZIP codes in Moreno Valley: 92551 92552 92553 92554 92555 92556 92557
Frost dates near Moreno Valley
- Colton Jan 27 · Dec 19
- Bryn Mawr Jan 27 · Dec 19
- Grand Terrace Jan 10 · Jan 2
- Loma Linda Jan 27 · Dec 19
- Redlands Jan 27 · Dec 19
- March Air Reserve Base Jan 9 · Dec 25
- Riverside Jan 9 · Dec 25
- Mentone Jan 27 · Dec 19
Frequently asked questions
When is the last frost in Moreno Valley, CA?
In most years Moreno Valley, CA has no frost at all. The nearest NOAA station averages 25 nights a year at or below 32°F — too few to calculate a typical frost date.