Frost dates for 77485Wallis, TX
The average last spring frost in Wallis is February 28 and the average first fall frost is November 30, giving a typical growing season of about 276 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Feb 28
- Average first fall frost
- Nov 30
- Growing season
- 276 days
Safer after Mar 21 (1-in-10 risk)
Possible by Nov 9 (1-in-10 risk)
First frost typically in 29 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 20 · Mar 13 · Apr 5 | Nov 1 · Nov 17 · Dec 6 | 249 days | 100% |
| Frost / freeze (32°F) | Jan 30 · Feb 28 · Mar 21 | Nov 9 · Nov 30 · Dec 29 | 276 days | 100% |
| Hard freeze (28°F) | Jan 2 · Feb 10 · Mar 9 | Nov 20 · Dec 20 · Jan 29 | 314 days | 94% |
Planting calendar for Wallis
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 28 – Apr 5 |
| Tomatoes | Transplant outdoors | Mar 16 – Aug 10 |
| Peppers | Start seeds indoors | Jan 28 – Feb 28 |
| Peppers | Transplant outdoors | Mar 30 – Apr 30 |
| Eggplant | Start seeds indoors | Feb 14 – Mar 15 |
| Eggplant | Transplant outdoors | Mar 30 – Apr 30 |
| Cucumbers | Sow outdoors | Mar 30 – Aug 20 |
| Summer squash | Sow outdoors | Mar 16 – Apr 30 |
| Winter squash & pumpkins | Sow outdoors | Mar 30 – Apr 30 |
| Snap beans | Sow outdoors | Mar 16 – Sep 12 |
| Sweet corn | Sow outdoors | Mar 16 – Aug 10 |
| Watermelon & cantaloupe | Sow outdoors | Mar 30 – Apr 30 |
| Okra | Sow outdoors | Mar 23 – Apr 15 |
| Peas | Sow outdoors (spring) | Jan 28 – Mar 15 |
| Potatoes | Plant outdoors (spring) | Jan 28 – Mar 30 |
| Onions | Start seeds indoors (spring) | Dec 17 – Jan 13 |
| Onions | Transplant outdoors (spring) | Feb 14 – Mar 15 |
| Broccoli | Start seeds indoors (spring) | Jan 10 – Feb 13 |
| Broccoli | Transplant outdoors (spring) | Feb 14 – Mar 15 |
| Broccoli | Start seeds indoors (fall) | Jul 31 – Aug 10 |
| Broccoli | Transplant outdoors (fall) | Aug 30 – Sep 10 |
| Cabbage | Start seeds indoors (spring) | Dec 31 – Jan 28 |
| Cabbage | Transplant outdoors (spring) | Jan 28 – Feb 28 |
| Cabbage | Start seeds indoors (fall) | Jul 21 – Aug 20 |
| Cabbage | Transplant outdoors (fall) | Aug 20 – Sep 20 |
| Leaf lettuce | Sow outdoors (spring) | Jan 28 – Apr 15 |
| Leaf lettuce | Sow outdoors (fall) | Aug 20 – Oct 6 |
| Spinach | Sow outdoors (spring) | Jan 21 – Mar 6 |
| Spinach | Sow outdoors (fall) | Sep 6 – Oct 11 |
| Radishes | Sow outdoors (spring) | Jan 28 – Mar 20 |
| Radishes | Sow outdoors (fall) | Aug 20 – Oct 21 |
| Kale | Sow outdoors (spring) | Feb 14 – Mar 6 |
| Kale | Sow outdoors (fall) | Aug 13 – Sep 20 |
| Carrots | Sow outdoors (spring) | Feb 28 – Apr 15 |
| Carrots | Sow outdoors (fall) | Jul 21 – Sep 5 |
| Garlic | Plant outdoors (fall) | Nov 20 – Dec 21 |
Where these dates come from
ZIP code 77485 is matched to the NOAA station Sealy, TX, 17.5 km away, at 196 ft elevation (65 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Sealy, TX (used) | 196 ft | Feb 28 | Nov 30 |
| Eagle Lake Resch Ctr, TX | 176 ft | Feb 21 | Dec 1 |
| Sugar Land, TX | 84 ft | Feb 9 | Dec 13 |
| Houston Sugarland Mem, TX | 82 ft | Feb 2 | Dec 11 |
Frost dates near Wallis
- Simonton, TX 77476 · last Feb 28, first Nov 30
- Orchard, TX 77464 · last Feb 15, first Dec 6
- Fulshear, TX 77441 · last Feb 15, first Dec 6
- San Felipe, TX 77473 · last Feb 28, first Nov 30
- Sealy, TX 77474 · last Feb 28, first Nov 30
- Beasley, TX 77417 · last Feb 15, first Dec 6
- Brookshire, TX 77423 · last Feb 28, first Nov 30
- Pattison, TX 77466 · last Feb 28, first Nov 30
Frequently asked questions
- When is the last frost in Wallis, TX?
- For ZIP code 77485, the average last spring frost (32°F) is February 28, based on NOAA 1991-2020 climate normals for the Sealy, TX weather station. There is a 1-in-10 chance of a frost after March 21.
- When is the first frost in Wallis, TX?
- The average first fall frost (32°F) is November 30. There is a 1-in-10 chance of frost by November 9, so tender plants are at risk from that point on.
- How long is the growing season in 77485?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 276 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.