Frost dates for 76890Zephyr, TX
The average last spring frost in Zephyr is March 22 and the average first fall frost is November 10, giving a typical growing season of about 233 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 22
- Average first fall frost
- Nov 10
- Growing season
- 233 days
Safer after Apr 9 (1-in-10 risk)
Possible by Oct 28 (1-in-10 risk)
First frost typically in 14 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) | Mar 15 · Apr 4 · Apr 22 | Oct 19 · Nov 1 · Nov 14 | 209 days | 100% |
| Frost / freeze (32°F) | Mar 3 · Mar 22 · Apr 9 | Oct 28 · Nov 10 · Nov 28 | 233 days | 100% |
| Hard freeze (28°F) | Feb 17 · Mar 7 · Mar 28 | Nov 4 · Nov 21 · Dec 7 | 258 days | 100% |
Planting calendar for Zephyr
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 19 – Apr 27 |
| Tomatoes | Transplant outdoors | Apr 7 – Jul 21 |
| Peppers | Start seeds indoors | Feb 19 – Mar 22 |
| Peppers | Transplant outdoors | Apr 21 – May 22 |
| Eggplant | Start seeds indoors | Mar 8 – Apr 6 |
| Eggplant | Transplant outdoors | Apr 21 – May 22 |
| Cucumbers | Sow outdoors | Apr 21 – Jul 31 |
| Summer squash | Sow outdoors | Apr 7 – May 22 |
| Winter squash & pumpkins | Sow outdoors | Apr 21 – May 22 |
| Snap beans | Sow outdoors | Apr 7 – Aug 23 |
| Sweet corn | Sow outdoors | Apr 7 – Jul 21 |
| Watermelon & cantaloupe | Sow outdoors | Apr 21 – May 22 |
| Okra | Sow outdoors | Apr 14 – May 7 |
| Peas | Sow outdoors (spring) | Feb 19 – Apr 6 |
| Potatoes | Plant outdoors (spring) | Feb 19 – Apr 21 |
| Onions | Start seeds indoors (spring) | Jan 8 – Feb 4 |
| Onions | Transplant outdoors (spring) | Mar 8 – Apr 6 |
| Broccoli | Start seeds indoors (spring) | Feb 1 – Mar 7 |
| Broccoli | Transplant outdoors (spring) | Mar 8 – Apr 6 |
| Broccoli | Start seeds indoors (fall) | Jul 11 – Jul 21 |
| Broccoli | Transplant outdoors (fall) | Aug 10 – Aug 21 |
| Cabbage | Start seeds indoors (spring) | Jan 22 – Feb 19 |
| Cabbage | Transplant outdoors (spring) | Feb 19 – Mar 22 |
| Cabbage | Start seeds indoors (fall) | Jul 1 – Jul 31 |
| Cabbage | Transplant outdoors (fall) | Jul 31 – Aug 31 |
| Leaf lettuce | Sow outdoors (spring) | Feb 19 – May 7 |
| Leaf lettuce | Sow outdoors (fall) | Jul 31 – Sep 16 |
| Spinach | Sow outdoors (spring) | Feb 12 – Mar 28 |
| Spinach | Sow outdoors (fall) | Aug 17 – Sep 21 |
| Radishes | Sow outdoors (spring) | Feb 19 – Apr 11 |
| Radishes | Sow outdoors (fall) | Jul 31 – Oct 1 |
| Kale | Sow outdoors (spring) | Mar 8 – Mar 28 |
| Kale | Sow outdoors (fall) | Jul 24 – Aug 31 |
| Carrots | Sow outdoors (spring) | Mar 22 – May 7 |
| Carrots | Sow outdoors (fall) | Jul 1 – Aug 16 |
| Garlic | Plant outdoors (fall) | Oct 31 – Dec 1 |
Where these dates come from
ZIP code 76890 is matched to the NOAA station Brownwood 2Ene, TX, 14.3 km away, at 1,394 ft elevation (118 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Brownwood 2Ene, TX (used) | 1,394 ft | Mar 22 | Nov 10 |
| Goldthwaite 1 Wsw, TX | 1,507 ft | Mar 23 | Nov 11 |
| San Saba 7Nw, TX | 1,330 ft | Mar 16 | Nov 13 |
| Proctor Rsvr, TX | 1,221 ft | Mar 12 | Nov 18 |
Frost dates near Zephyr
- Blanket, TX 76432 · last Mar 22, first Nov 10
- Early, TX 76803 · last Mar 22, first Nov 10
- Mullin, TX 76864 · last Mar 23, first Nov 11
- Brownwood, TX 76801 · last Mar 22, first Nov 10
- Priddy, TX 76870 · last Mar 23, first Nov 11
- Sidney, TX 76474 · last Mar 22, first Nov 10
- Bangs, TX 76823 · last Mar 22, first Nov 10
- Comanche, TX 76442 · last Mar 12, first Nov 18
Frequently asked questions
- When is the last frost in Zephyr, TX?
- For ZIP code 76890, the average last spring frost (32°F) is March 22, based on NOAA 1991-2020 climate normals for the Brownwood 2Ene, TX weather station. There is a 1-in-10 chance of a frost after April 9.
- When is the first frost in Zephyr, TX?
- The average first fall frost (32°F) is November 10. There is a 1-in-10 chance of frost by October 28, so tender plants are at risk from that point on.
- How long is the growing season in 76890?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 233 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.