When to plant in Mobile, AL
USDA Zone 9aEverything below — frost dates, hardiness zone, and what to plant when in Mobile, Alabama — is derived from the closest NOAA station with complete climate normals.
A generous ~288-day season lets Mobile gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. In zone 9a, frost is a minor factor for Mobile — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Mobile is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
MOBILE DWTN AP · 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 Mobile’s own odds, recorded at MOBILE DWTN AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 25 | Mar 6 | Feb 12 | Nov 5 | Nov 22 | Dec 13 |
| 32°F | Mar 15 | Feb 21 | Jan 25 | Nov 15 | Dec 6 | Jan 5 |
| 28°F | Mar 6 | Feb 2 | Jan 2 | Nov 30 | Dec 30 | Jan 30 |
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 Mobile, 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.
Mobile planting FAQ
When is the last spring frost in Mobile, AL?
On average, the last spring frost in Mobile is around February 21 (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 Mobile, AL?
Expect Mobile's first fall frost near December 6 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Mobile in?
Mobile is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Mobile?
Mobile has about 288 frost-free days — a long growing season — between the average last spring frost (February 21) and first fall frost (December 6).
When should I plant tomatoes in Mobile?
For Mobile, sow tomatoes indoors about December 27–January 10 and move the seedlings out around February 28, after the last spring frost.
Never miss a window in Mobile
An email when it’s time to start seeds, transplant, and sow — timed to Mobile’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Prichard · 12 km
- Tillmans Corner · 14 km
- Saraland · 21 km
- Daphne · 22 km
- Spanish Fort · 24 km
- Fairhope · 27 km
- Moss Point · 49 km
- Foley · 52 km
Frost dates recorded at MOBILE DWTN AP, 6 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 Mobile, AL — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00013838. Retrieved from https://blissgarden.com/alabama/mobile.