When to plant in Hemet, CA
USDA Zone 9bHemet, California frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Hemet enjoys a long ~313-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 9b is warm enough that Hemet can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Hemet is now 26 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
SAN JACINTO · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Hemet’s own odds, recorded at SAN JACINTO.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 8 | Mar 5 | Feb 6 | Nov 5 | Nov 24 | Dec 12 |
| 32°F | Feb 28 | Jan 31 | Dec 31 | Nov 22 | Dec 10 | Jan 6 |
| 28°F | Jan 29 | Jan 3 | Dec 11 | Dec 2 | Dec 21 | Jan 15 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Hemet, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 27 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Hemet planting FAQ
When is the last spring frost in Hemet, CA?
Plan for the last spring frost in Hemet around January 31 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Hemet, CA?
Expect Hemet's first fall frost near December 10 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Hemet in?
Hemet is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Hemet?
There are roughly 313 frost-free days in Hemet (a long growing season), running from the average last frost around January 31 to the first fall frost near December 10.
When should I plant tomatoes in Hemet?
In Hemet, start tomato seeds indoors around December 6–December 20, then transplant seedlings outdoors around February 7 once the danger of frost has passed.
Never miss a window in Hemet
An email when it’s time to start seeds, transplant, and sow — timed to Hemet’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- East Hemet · 5 km
- San Jacinto · 7 km
- Valle Vista · 10 km
- Beaumont · 16 km
- Menifee · 18 km
- French Valley · 18 km
- Perris · 22 km
- Canyon Lake · 25 km
Frost dates recorded at SAN JACINTO, 7 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Hemet, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00047813. Retrieved from https://blissgarden.com/california/hemet.