Frost dates for 77342Huntsville, TX
The average last spring frost in Huntsville is March 2 and the average first fall frost is November 26, giving a typical growing season of about 272 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 2
- Average first fall frost
- Nov 26
- Growing season
- 272 days
Safer after Mar 24 (1-in-10 risk)
Possible by Nov 7 (1-in-10 risk)
First frost typically in 30 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Feb 22 · Mar 15 · Apr 6 | Oct 30 · Nov 14 · Dec 1 | 243 days | 100% |
| Frost / freeze (32°F) | Jan 31 · Mar 2 · Mar 24 | Nov 7 · Nov 26 · Dec 19 | 272 days | 100% |
| Hard freeze (28°F) | Jan 8 · Feb 8 · Mar 10 | Nov 20 · Dec 16 · Jan 17 | 309 days | 95% |
Planting calendar for Huntsville
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Jan 30 – Apr 7 |
| Tomatoes | Transplant outdoors | Mar 18 – Aug 6 |
| Peppers | Start seeds indoors | Jan 30 – Mar 2 |
| Peppers | Transplant outdoors | Apr 1 – May 2 |
| Eggplant | Start seeds indoors | Feb 16 – Mar 17 |
| Eggplant | Transplant outdoors | Apr 1 – May 2 |
| Cucumbers | Sow outdoors | Apr 1 – Aug 16 |
| Summer squash | Sow outdoors | Mar 18 – May 2 |
| Winter squash & pumpkins | Sow outdoors | Apr 1 – May 2 |
| Snap beans | Sow outdoors | Mar 18 – Sep 8 |
| Sweet corn | Sow outdoors | Mar 18 – Aug 6 |
| Watermelon & cantaloupe | Sow outdoors | Apr 1 – May 2 |
| Okra | Sow outdoors | Mar 25 – Apr 17 |
| Peas | Sow outdoors (spring) | Jan 30 – Mar 17 |
| Potatoes | Plant outdoors (spring) | Jan 30 – Apr 1 |
| Onions | Start seeds indoors (spring) | Dec 19 – Jan 15 |
| Onions | Transplant outdoors (spring) | Feb 16 – Mar 17 |
| Broccoli | Start seeds indoors (spring) | Jan 12 – Feb 15 |
| Broccoli | Transplant outdoors (spring) | Feb 16 – Mar 17 |
| Broccoli | Start seeds indoors (fall) | Jul 27 – Aug 6 |
| Broccoli | Transplant outdoors (fall) | Aug 26 – Sep 6 |
| Cabbage | Start seeds indoors (spring) | Jan 2 – Jan 30 |
| Cabbage | Transplant outdoors (spring) | Jan 30 – Mar 2 |
| Cabbage | Start seeds indoors (fall) | Jul 17 – Aug 16 |
| Cabbage | Transplant outdoors (fall) | Aug 16 – Sep 16 |
| Leaf lettuce | Sow outdoors (spring) | Jan 30 – Apr 17 |
| Leaf lettuce | Sow outdoors (fall) | Aug 16 – Oct 2 |
| Spinach | Sow outdoors (spring) | Jan 23 – Mar 8 |
| Spinach | Sow outdoors (fall) | Sep 2 – Oct 7 |
| Radishes | Sow outdoors (spring) | Jan 30 – Mar 22 |
| Radishes | Sow outdoors (fall) | Aug 16 – Oct 17 |
| Kale | Sow outdoors (spring) | Feb 16 – Mar 8 |
| Kale | Sow outdoors (fall) | Aug 9 – Sep 16 |
| Carrots | Sow outdoors (spring) | Mar 2 – Apr 17 |
| Carrots | Sow outdoors (fall) | Jul 17 – Sep 1 |
| Garlic | Plant outdoors (fall) | Nov 16 – Dec 17 |
Where these dates come from
ZIP code 77342 is matched to the NOAA station Huntsville Muni Ap, TX, 4.3 km away, at 366 ft elevation (104 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Huntsville Muni Ap, TX (used) | 366 ft | Mar 2 | Nov 26 |
| Huntsville, TX | 494 ft | Mar 1 | Nov 28 |
| Madisonville, TX | 252 ft | Mar 16 | Nov 11 |
| Conroe Montgomery Co Ap, TX | 245 ft | Mar 11 | Nov 19 |
Frost dates near Huntsville
- Huntsville, TX 77320 · last Mar 2, first Nov 26
- Riverside, TX 77367 · last Mar 2, first Nov 26
- Dodge, TX 77334 · last Mar 2, first Nov 26
- Midway, TX 75852 · last Mar 16, first Nov 11
- Oakhurst, TX 77359 · last Mar 2, first Nov 26
- Trinity, TX 75862 · last Mar 2, first Nov 26
- New Waverly, TX 77358 · last Mar 11, first Nov 19
- Lovelady, TX 75851 · last Mar 13, first Nov 17
Frequently asked questions
- When is the last frost in Huntsville, TX?
- For ZIP code 77342, the average last spring frost (32°F) is March 2, based on NOAA 1991-2020 climate normals for the Huntsville Muni Ap, TX weather station. There is a 1-in-10 chance of a frost after March 24.
- When is the first frost in Huntsville, TX?
- The average first fall frost (32°F) is November 26. There is a 1-in-10 chance of frost by November 7, so tender plants are at risk from that point on.
- How long is the growing season in 77342?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 272 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.