When to plant in Huntsville, TX
USDA Zone 9aHuntsville, Texas frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
With about 272 frost-free days, Huntsville supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. Zone 9a is warm enough that Huntsville can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average first fall frost in Huntsville is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
HUNTSVILLE · 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 Huntsville’s own odds, recorded at HUNTSVILLE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 3 | Mar 14 | Feb 21 | Nov 1 | Nov 16 | Dec 5 |
| 32°F | Mar 22 | Mar 1 | Feb 2 | Nov 6 | Nov 28 | Dec 21 |
| 28°F | Mar 11 | Feb 12 | Jan 13 | Nov 19 | Dec 13 | Jan 14 |
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 Huntsville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 41 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.
Huntsville planting FAQ
When is the last spring frost in Huntsville, TX?
Huntsville's average last spring frost falls near March 1 — 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 Huntsville, TX?
The first fall frost in Huntsville typically arrives around November 28 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Huntsville in?
Huntsville is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Huntsville?
There are roughly 272 frost-free days in Huntsville (a long growing season), running from the average last frost around March 1 to the first fall frost near November 28.
When should I plant tomatoes in Huntsville?
In Huntsville, start tomato seeds indoors around January 4–January 18, then transplant seedlings outdoors around March 8 once the danger of frost has passed.
Never miss a window in Huntsville
An email when it’s time to start seeds, transplant, and sow — timed to Huntsville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Conroe · 42 km
- The Woodlands · 59 km
- Tomball · 68 km
- College Station · 72 km
- Spring · 73 km
- Bryan · 79 km
- Humble · 84 km
- Atascocita · 87 km
Frost dates recorded at HUNTSVILLE, 1 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 Huntsville, TX — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00414382. Retrieved from https://blissgarden.com/texas/huntsville.