Frost dates for 77868Navasota, TX
The average last spring frost in Navasota is March 7 and the average first fall frost is November 19, giving a typical growing season of about 259 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 7
- Average first fall frost
- Nov 19
- Growing season
- 259 days
Safer after Mar 31 (1-in-10 risk)
Possible by Nov 1 (1-in-10 risk)
First frost typically in 19 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 28 · Mar 22 · Apr 15 | Oct 24 · Nov 7 · Nov 27 | 233 days | 100% |
| Frost / freeze (32°F) | Feb 10 · Mar 7 · Mar 31 | Nov 1 · Nov 19 · Dec 11 | 259 days | 100% |
| Hard freeze (28°F) | Jan 19 · Feb 19 · Mar 16 | Nov 11 · Dec 3 · Jan 5 | 291 days | 99% |
Planting calendar for Navasota
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 | Feb 4 – Apr 12 |
| Tomatoes | Transplant outdoors | Mar 23 – Jul 30 |
| Peppers | Start seeds indoors | Feb 4 – Mar 7 |
| Peppers | Transplant outdoors | Apr 6 – May 7 |
| Eggplant | Start seeds indoors | Feb 21 – Mar 22 |
| Eggplant | Transplant outdoors | Apr 6 – May 7 |
| Cucumbers | Sow outdoors | Apr 6 – Aug 9 |
| Summer squash | Sow outdoors | Mar 23 – May 7 |
| Winter squash & pumpkins | Sow outdoors | Apr 6 – May 7 |
| Snap beans | Sow outdoors | Mar 23 – Sep 1 |
| Sweet corn | Sow outdoors | Mar 23 – Jul 30 |
| Watermelon & cantaloupe | Sow outdoors | Apr 6 – May 7 |
| Okra | Sow outdoors | Mar 30 – Apr 22 |
| Peas | Sow outdoors (spring) | Feb 4 – Mar 22 |
| Potatoes | Plant outdoors (spring) | Feb 4 – Apr 6 |
| Onions | Start seeds indoors (spring) | Dec 24 – Jan 20 |
| Onions | Transplant outdoors (spring) | Feb 21 – Mar 22 |
| Broccoli | Start seeds indoors (spring) | Jan 17 – Feb 20 |
| Broccoli | Transplant outdoors (spring) | Feb 21 – Mar 22 |
| Broccoli | Start seeds indoors (fall) | Jul 20 – Jul 30 |
| Broccoli | Transplant outdoors (fall) | Aug 19 – Aug 30 |
| Cabbage | Start seeds indoors (spring) | Jan 7 – Feb 4 |
| Cabbage | Transplant outdoors (spring) | Feb 4 – Mar 7 |
| Cabbage | Start seeds indoors (fall) | Jul 10 – Aug 9 |
| Cabbage | Transplant outdoors (fall) | Aug 9 – Sep 9 |
| Leaf lettuce | Sow outdoors (spring) | Feb 4 – Apr 22 |
| Leaf lettuce | Sow outdoors (fall) | Aug 9 – Sep 25 |
| Spinach | Sow outdoors (spring) | Jan 28 – Mar 13 |
| Spinach | Sow outdoors (fall) | Aug 26 – Sep 30 |
| Radishes | Sow outdoors (spring) | Feb 4 – Mar 27 |
| Radishes | Sow outdoors (fall) | Aug 9 – Oct 10 |
| Kale | Sow outdoors (spring) | Feb 21 – Mar 13 |
| Kale | Sow outdoors (fall) | Aug 2 – Sep 9 |
| Carrots | Sow outdoors (spring) | Mar 7 – Apr 22 |
| Carrots | Sow outdoors (fall) | Jul 10 – Aug 25 |
| Garlic | Plant outdoors (fall) | Nov 9 – Dec 10 |
Where these dates come from
ZIP code 77868 is matched to the NOAA station Washington Sp, TX, 10.3 km away, at 215 ft elevation (18 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Washington Sp, TX (used) | 215 ft | Mar 7 | Nov 19 |
| College Stn, TX | 305 ft | Feb 27 | Nov 30 |
| Brenham, TX | 313 ft | Mar 2 | Nov 30 |
| Bellville 6Nne, TX | 280 ft | Feb 28 | Dec 2 |
Frost dates near Navasota
- Washington, TX 77880 · last Mar 7, first Nov 19
- Millican, TX 77866 · last Mar 7, first Nov 19
- Plantersville, TX 77363 · last Mar 7, first Nov 19
- Anderson, TX 77830 · last Mar 7, first Nov 19
- Chappell Hill, TX 77426 · last Mar 7, first Nov 19
- Dobbin, TX 77333 · last Feb 24, first Dec 2
- Richards, TX 77873 · last Mar 2, first Nov 26
- Roans Prairie, TX 77875 · last Mar 2, first Nov 26
Frequently asked questions
- When is the last frost in Navasota, TX?
- For ZIP code 77868, the average last spring frost (32°F) is March 7, based on NOAA 1991-2020 climate normals for the Washington Sp, TX weather station. There is a 1-in-10 chance of a frost after March 31.
- When is the first frost in Navasota, TX?
- The average first fall frost (32°F) is November 19. There is a 1-in-10 chance of frost by November 1, so tender plants are at risk from that point on.
- How long is the growing season in 77868?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 259 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.