Frost dates for 78837Comstock, TX
The average last spring frost in Comstock is March 10 and the average first fall frost is November 16, giving a typical growing season of about 251 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 10
- Average first fall frost
- Nov 16
- Growing season
- 251 days
Safer after Apr 4 (1-in-10 risk)
Possible by Nov 1 (1-in-10 risk)
First frost typically in 15 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 3 · Mar 28 · Apr 17 | Oct 25 · Nov 6 · Nov 22 | 225 days | 100% |
| Frost / freeze (32°F) | Feb 19 · Mar 10 · Apr 4 | Nov 1 · Nov 16 · Dec 4 | 251 days | 100% |
| Hard freeze (28°F) | Jan 31 · Feb 25 · Mar 17 | Nov 11 · Nov 29 · Dec 20 | 277 days | 100% |
Planting calendar for Comstock
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 7 – Apr 15 |
| Tomatoes | Transplant outdoors | Mar 26 – Jul 27 |
| Peppers | Start seeds indoors | Feb 7 – Mar 10 |
| Peppers | Transplant outdoors | Apr 9 – May 10 |
| Eggplant | Start seeds indoors | Feb 24 – Mar 25 |
| Eggplant | Transplant outdoors | Apr 9 – May 10 |
| Cucumbers | Sow outdoors | Apr 9 – Aug 6 |
| Summer squash | Sow outdoors | Mar 26 – May 10 |
| Winter squash & pumpkins | Sow outdoors | Apr 9 – May 10 |
| Snap beans | Sow outdoors | Mar 26 – Aug 29 |
| Sweet corn | Sow outdoors | Mar 26 – Jul 27 |
| Watermelon & cantaloupe | Sow outdoors | Apr 9 – May 10 |
| Okra | Sow outdoors | Apr 2 – Apr 25 |
| Peas | Sow outdoors (spring) | Feb 7 – Mar 25 |
| Potatoes | Plant outdoors (spring) | Feb 7 – Apr 9 |
| Onions | Start seeds indoors (spring) | Dec 27 – Jan 23 |
| Onions | Transplant outdoors (spring) | Feb 24 – Mar 25 |
| Broccoli | Start seeds indoors (spring) | Jan 20 – Feb 23 |
| Broccoli | Transplant outdoors (spring) | Feb 24 – Mar 25 |
| Broccoli | Start seeds indoors (fall) | Jul 17 – Jul 27 |
| Broccoli | Transplant outdoors (fall) | Aug 16 – Aug 27 |
| Cabbage | Start seeds indoors (spring) | Jan 10 – Feb 7 |
| Cabbage | Transplant outdoors (spring) | Feb 7 – Mar 10 |
| Cabbage | Start seeds indoors (fall) | Jul 7 – Aug 6 |
| Cabbage | Transplant outdoors (fall) | Aug 6 – Sep 6 |
| Leaf lettuce | Sow outdoors (spring) | Feb 7 – Apr 25 |
| Leaf lettuce | Sow outdoors (fall) | Aug 6 – Sep 22 |
| Spinach | Sow outdoors (spring) | Jan 31 – Mar 16 |
| Spinach | Sow outdoors (fall) | Aug 23 – Sep 27 |
| Radishes | Sow outdoors (spring) | Feb 7 – Mar 30 |
| Radishes | Sow outdoors (fall) | Aug 6 – Oct 7 |
| Kale | Sow outdoors (spring) | Feb 24 – Mar 16 |
| Kale | Sow outdoors (fall) | Jul 30 – Sep 6 |
| Carrots | Sow outdoors (spring) | Mar 10 – Apr 25 |
| Carrots | Sow outdoors (fall) | Jul 7 – Aug 22 |
| Garlic | Plant outdoors (fall) | Nov 6 – Dec 7 |
Where these dates come from
ZIP code 78837 is matched to the NOAA station Hudspeth Rvr Rch, TX, 29.7 km away, at 1,570 ft elevation (18 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Hudspeth Rvr Rch, TX (used) | 1,570 ft | Mar 10 | Nov 16 |
| Langtry, TX | 1,290 ft | Feb 27 | Nov 27 |
| Amistad Dam, TX | 1,157 ft | Feb 14 | Dec 6 |
| Del Rio 4Nw, TX | 1,051 ft | Feb 19 | Dec 4 |
Frost dates near Comstock
- Langtry, TX 78871 · last Feb 27, first Nov 27
- Del Rio, TX 78842 · last Feb 19, first Dec 4
- Laughlin Afb, TX 78843 · last Feb 16, first Dec 3
- Dryden, TX 78851 · last Mar 1, first Nov 28
- Brackettville, TX 78832 · last Mar 5, first Nov 24
- Rocksprings, TX 78880 · last Mar 8, first Nov 25
- Ozona, TX 76943 · last Mar 21, first Nov 6
- Sonora, TX 76950 · last Apr 1, first Nov 6
Frequently asked questions
- When is the last frost in Comstock, TX?
- For ZIP code 78837, the average last spring frost (32°F) is March 10, based on NOAA 1991-2020 climate normals for the Hudspeth Rvr Rch, TX weather station. There is a 1-in-10 chance of a frost after April 4.
- When is the first frost in Comstock, TX?
- The average first fall frost (32°F) is November 16. 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 78837?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 251 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.