Frost dates for 77341Huntsville, TX
The average last spring frost in Huntsville is March 1 and the average first fall frost is November 28, giving a typical growing season of about 272 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 1
- Average first fall frost
- Nov 28
- Growing season
- 272 days
Safer after Mar 22 (1-in-10 risk)
Possible by Nov 6 (1-in-10 risk)
First frost typically in 32 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 21 · Mar 14 · Apr 3 | Nov 1 · Nov 16 · Dec 5 | 248 days | 100% |
| Frost / freeze (32°F) | Feb 2 · Mar 1 · Mar 22 | Nov 6 · Nov 28 · Dec 21 | 272 days | 100% |
| Hard freeze (28°F) | Jan 13 · Feb 12 · Mar 11 | Nov 19 · Dec 13 · Jan 14 | 304 days | 98% |
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 29 – Apr 6 |
| Tomatoes | Transplant outdoors | Mar 17 – Aug 8 |
| Peppers | Start seeds indoors | Jan 29 – Mar 1 |
| Peppers | Transplant outdoors | Mar 31 – May 1 |
| Eggplant | Start seeds indoors | Feb 15 – Mar 16 |
| Eggplant | Transplant outdoors | Mar 31 – May 1 |
| Cucumbers | Sow outdoors | Mar 31 – Aug 18 |
| Summer squash | Sow outdoors | Mar 17 – May 1 |
| Winter squash & pumpkins | Sow outdoors | Mar 31 – May 1 |
| Snap beans | Sow outdoors | Mar 17 – Sep 10 |
| Sweet corn | Sow outdoors | Mar 17 – Aug 8 |
| Watermelon & cantaloupe | Sow outdoors | Mar 31 – May 1 |
| Okra | Sow outdoors | Mar 24 – Apr 16 |
| Peas | Sow outdoors (spring) | Jan 29 – Mar 16 |
| Potatoes | Plant outdoors (spring) | Jan 29 – Mar 31 |
| Onions | Start seeds indoors (spring) | Dec 18 – Jan 14 |
| Onions | Transplant outdoors (spring) | Feb 15 – Mar 16 |
| Broccoli | Start seeds indoors (spring) | Jan 11 – Feb 14 |
| Broccoli | Transplant outdoors (spring) | Feb 15 – Mar 16 |
| Broccoli | Start seeds indoors (fall) | Jul 29 – Aug 8 |
| Broccoli | Transplant outdoors (fall) | Aug 28 – Sep 8 |
| Cabbage | Start seeds indoors (spring) | Jan 1 – Jan 29 |
| Cabbage | Transplant outdoors (spring) | Jan 29 – Mar 1 |
| Cabbage | Start seeds indoors (fall) | Jul 19 – Aug 18 |
| Cabbage | Transplant outdoors (fall) | Aug 18 – Sep 18 |
| Leaf lettuce | Sow outdoors (spring) | Jan 29 – Apr 16 |
| Leaf lettuce | Sow outdoors (fall) | Aug 18 – Oct 4 |
| Spinach | Sow outdoors (spring) | Jan 22 – Mar 7 |
| Spinach | Sow outdoors (fall) | Sep 4 – Oct 9 |
| Radishes | Sow outdoors (spring) | Jan 29 – Mar 21 |
| Radishes | Sow outdoors (fall) | Aug 18 – Oct 19 |
| Kale | Sow outdoors (spring) | Feb 15 – Mar 7 |
| Kale | Sow outdoors (fall) | Aug 11 – Sep 18 |
| Carrots | Sow outdoors (spring) | Mar 1 – Apr 16 |
| Carrots | Sow outdoors (fall) | Jul 19 – Sep 3 |
| Garlic | Plant outdoors (fall) | Nov 18 – Dec 19 |
Where these dates come from
ZIP code 77341 is matched to the NOAA station Huntsville, TX, 1.2 km away, at 494 ft elevation (41 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Huntsville, TX (used) | 494 ft | Mar 1 | Nov 28 |
| Huntsville Muni Ap, TX | 366 ft | Mar 2 | Nov 26 |
| Conroe Montgomery Co Ap, TX | 245 ft | Mar 11 | Nov 19 |
| Conroe, TX | 245 ft | Feb 24 | Dec 2 |
Frost dates near Huntsville
- Huntsville, TX 77343 · last Mar 2, first Nov 26
- Dodge, TX 77334 · last Mar 2, first Nov 26
- Riverside, TX 77367 · last Mar 2, first Nov 26
- New Waverly, TX 77358 · last Mar 11, first Nov 19
- Oakhurst, TX 77359 · last Mar 2, first Nov 26
- Willis, TX 77318 · last Feb 24, first Dec 2
- Pointblank, TX 77364 · last Mar 1, first Nov 24
- Trinity, TX 75862 · last Mar 2, first Nov 26
Frequently asked questions
- When is the last frost in Huntsville, TX?
- For ZIP code 77341, the average last spring frost (32°F) is March 1, based on NOAA 1991-2020 climate normals for the Huntsville, TX weather station. There is a 1-in-10 chance of a frost after March 22.
- When is the first frost in Huntsville, TX?
- The average first fall frost (32°F) is November 28. There is a 1-in-10 chance of frost by November 6, so tender plants are at risk from that point on.
- How long is the growing season in 77341?
- 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.