Frost dates for 77379Spring, TX
The average last spring frost in Spring is February 19 and the average first fall frost is December 3, giving a typical growing season of about 290 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Feb 19
- Average first fall frost
- Dec 3
- Growing season
- 290 days
Safer after Mar 15 (1-in-10 risk)
Possible by Nov 13 (1-in-10 risk)
First frost typically in 31 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 11 · Mar 7 · Mar 29 | Nov 2 · Nov 19 · Dec 8 | 258 days | 100% |
| Frost / freeze (32°F) | Jan 21 · Feb 19 · Mar 15 | Nov 13 · Dec 3 · Jan 5 | 290 days | 99% |
| Hard freeze (28°F) | Dec 28 · Jan 31 · Mar 5 | Dec 2 · Dec 29 · Feb 1 | 333 days | 85% |
Planting calendar for Spring
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 19 – Mar 27 |
| Tomatoes | Transplant outdoors | Mar 7 – Aug 13 |
| Peppers | Start seeds indoors | Jan 19 – Feb 19 |
| Peppers | Transplant outdoors | Mar 21 – Apr 21 |
| Eggplant | Start seeds indoors | Feb 5 – Mar 6 |
| Eggplant | Transplant outdoors | Mar 21 – Apr 21 |
| Cucumbers | Sow outdoors | Mar 21 – Aug 23 |
| Summer squash | Sow outdoors | Mar 7 – Apr 21 |
| Winter squash & pumpkins | Sow outdoors | Mar 21 – Apr 21 |
| Snap beans | Sow outdoors | Mar 7 – Sep 15 |
| Sweet corn | Sow outdoors | Mar 7 – Aug 13 |
| Watermelon & cantaloupe | Sow outdoors | Mar 21 – Apr 21 |
| Okra | Sow outdoors | Mar 14 – Apr 6 |
| Peas | Sow outdoors (spring) | Jan 19 – Mar 6 |
| Potatoes | Plant outdoors (spring) | Jan 19 – Mar 21 |
| Onions | Start seeds indoors (spring) | Dec 8 – Jan 4 |
| Onions | Transplant outdoors (spring) | Feb 5 – Mar 6 |
| Broccoli | Start seeds indoors (spring) | Jan 1 – Feb 4 |
| Broccoli | Transplant outdoors (spring) | Feb 5 – Mar 6 |
| Broccoli | Start seeds indoors (fall) | Aug 3 – Aug 13 |
| Broccoli | Transplant outdoors (fall) | Sep 2 – Sep 13 |
| Cabbage | Start seeds indoors (spring) | Dec 22 – Jan 19 |
| Cabbage | Transplant outdoors (spring) | Jan 19 – Feb 19 |
| Cabbage | Start seeds indoors (fall) | Jul 24 – Aug 23 |
| Cabbage | Transplant outdoors (fall) | Aug 23 – Sep 23 |
| Leaf lettuce | Sow outdoors (spring) | Jan 19 – Apr 6 |
| Leaf lettuce | Sow outdoors (fall) | Aug 23 – Oct 9 |
| Spinach | Sow outdoors (spring) | Jan 12 – Feb 25 |
| Spinach | Sow outdoors (fall) | Sep 9 – Oct 14 |
| Radishes | Sow outdoors (spring) | Jan 19 – Mar 11 |
| Radishes | Sow outdoors (fall) | Aug 23 – Oct 24 |
| Kale | Sow outdoors (spring) | Feb 5 – Feb 25 |
| Kale | Sow outdoors (fall) | Aug 16 – Sep 23 |
| Carrots | Sow outdoors (spring) | Feb 19 – Apr 6 |
| Carrots | Sow outdoors (fall) | Jul 24 – Sep 8 |
| Garlic | Plant outdoors (fall) | Nov 23 – Dec 24 |
Where these dates come from
ZIP code 77379 is matched to the NOAA station Houston Hooks Mem Ap, TX, 4 km away, at 152 ft elevation (21 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Houston Hooks Mem Ap, TX (used) | 152 ft | Feb 19 | Dec 3 |
| Houston Intercont Ap, TX | 95 ft | Feb 13 | Dec 9 |
| Conroe, TX | 245 ft | Feb 24 | Dec 2 |
| Conroe Montgomery Co Ap, TX | 245 ft | Mar 11 | Nov 19 |
Frost dates near Spring
- Houston, TX 77068 · last Feb 19, first Dec 3
- Spring, TX 77388 · last Feb 19, first Dec 3
- Tomball, TX 77375 · last Feb 19, first Dec 3
- Hufsmith, TX 77337 · last Feb 19, first Dec 3
- Cypress, TX 77429 · last Feb 19, first Dec 3
- Conroe, TX 77385 · last Feb 19, first Dec 3
- Pinehurst, TX 77362 · last Feb 19, first Dec 3
- Magnolia, TX 77354 · last Feb 24, first Dec 2
Frequently asked questions
- When is the last frost in Spring, TX?
- For ZIP code 77379, the average last spring frost (32°F) is February 19, based on NOAA 1991-2020 climate normals for the Houston Hooks Mem Ap, TX weather station. There is a 1-in-10 chance of a frost after March 15.
- When is the first frost in Spring, TX?
- The average first fall frost (32°F) is December 3. There is a 1-in-10 chance of frost by November 13, so tender plants are at risk from that point on.
- How long is the growing season in 77379?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 290 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.