When to plant in Beaumont, CA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Beaumont, California — all computed from Beaumont's nearest NOAA weather station.
A generous ~313-day season lets Beaumont gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. In zone 9b, frost is a minor factor for Beaumont — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Beaumont 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 Beaumont’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 Beaumont, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 26 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.
Beaumont planting FAQ
When is the last spring frost in Beaumont, CA?
On average, the last spring frost in Beaumont is around January 31 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Beaumont, CA?
Expect Beaumont'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 Beaumont in?
Beaumont is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Beaumont?
Beaumont has about 313 frost-free days — a long growing season — between the average last spring frost (January 31) and first fall frost (December 10).
When should I plant tomatoes in Beaumont?
For Beaumont, sow tomatoes indoors about December 6–December 20 and move the seedlings out around February 7, after the last spring frost.
Never miss a window in Beaumont
An email when it’s time to start seeds, transplant, and sow — timed to Beaumont’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Banning · 9 km
- San Jacinto · 10 km
- Calimesa · 15 km
- Valle Vista · 16 km
- East Hemet · 16 km
- Hemet · 16 km
- Yucaipa · 19 km
- Moreno Valley · 24 km
Frost dates recorded at SAN JACINTO, 9 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 Beaumont, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00047813. Retrieved from https://blissgarden.com/california/beaumont.