When to plant in Phelan, CA
USDA Zone 8bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Phelan, California — all computed from Phelan's nearest NOAA weather station.
Zone 8b means many perennials and even some tender shrubs overwinter in Phelan, while your frost dates still decide when annuals go out.
Frost probability
WRIGHTWOOD · 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 Phelan’s own odds, recorded at WRIGHTWOOD.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 20 | Jun 4 | May 14 | Sep 10 | Oct 1 | Oct 17 |
| 32°F | Jun 9 | May 16 | Apr 25 | Sep 25 | Oct 13 | Nov 1 |
| 28°F | May 13 | Apr 25 | Apr 6 | Oct 10 | Oct 30 | Nov 13 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Phelan, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 23 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.
Phelan planting FAQ
When is the last spring frost in Phelan, CA?
Phelan's average last spring frost falls near May 16 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Phelan, CA?
In Phelan, the first 32°F freeze of fall lands around October 13 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Phelan in?
Phelan is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Phelan?
There are roughly 150 frost-free days in Phelan (a moderate growing season), running from the average last frost around May 16 to the first fall frost near October 13.
When should I plant tomatoes in Phelan?
In Phelan, start tomato seeds indoors around March 21–April 4, then transplant seedlings outdoors around May 23 once the danger of frost has passed.
Never miss a window in Phelan
An email when it’s time to start seeds, transplant, and sow — timed to Phelan’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Adelanto · 18 km
- Victorville · 18 km
- Hesperia · 20 km
- Apple Valley · 31 km
- Lake Los Angeles · 34 km
- Rancho Cucamonga · 35 km
- Muscoy · 36 km
- Fontana · 37 km
Frost dates recorded at WRIGHTWOOD, 14 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 Phelan, CA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00049822. Retrieved from https://blissgarden.com/california/phelan.