Frost dates for 76209Denton, TX
The average last spring frost in Denton is March 13 and the average first fall frost is November 20, giving a typical growing season of about 251 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 13
- Average first fall frost
- Nov 20
- Growing season
- 251 days
Safer after Mar 31 (1-in-10 risk)
Possible by Nov 3 (1-in-10 risk)
First frost typically in 24 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 8 · Mar 28 · Apr 16 | Oct 26 · Nov 10 · Nov 26 | 227 days | 100% |
| Frost / freeze (32°F) | Feb 24 · Mar 13 · Mar 31 | Nov 3 · Nov 20 · Dec 8 | 251 days | 100% |
| Hard freeze (28°F) | Feb 6 · Mar 1 · Mar 18 | Nov 11 · Dec 1 · Dec 22 | 276 days | 100% |
Planting calendar for Denton
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 10 – Apr 18 |
| Tomatoes | Transplant outdoors | Mar 29 – Jul 31 |
| Peppers | Start seeds indoors | Feb 10 – Mar 13 |
| Peppers | Transplant outdoors | Apr 12 – May 13 |
| Eggplant | Start seeds indoors | Feb 27 – Mar 28 |
| Eggplant | Transplant outdoors | Apr 12 – May 13 |
| Cucumbers | Sow outdoors | Apr 12 – Aug 10 |
| Summer squash | Sow outdoors | Mar 29 – May 13 |
| Winter squash & pumpkins | Sow outdoors | Apr 12 – May 13 |
| Snap beans | Sow outdoors | Mar 29 – Sep 2 |
| Sweet corn | Sow outdoors | Mar 29 – Jul 31 |
| Watermelon & cantaloupe | Sow outdoors | Apr 12 – May 13 |
| Okra | Sow outdoors | Apr 5 – Apr 28 |
| Peas | Sow outdoors (spring) | Feb 10 – Mar 28 |
| Potatoes | Plant outdoors (spring) | Feb 10 – Apr 12 |
| Onions | Start seeds indoors (spring) | Dec 30 – Jan 26 |
| Onions | Transplant outdoors (spring) | Feb 27 – Mar 28 |
| Broccoli | Start seeds indoors (spring) | Jan 23 – Feb 26 |
| Broccoli | Transplant outdoors (spring) | Feb 27 – Mar 28 |
| Broccoli | Start seeds indoors (fall) | Jul 21 – Jul 31 |
| Broccoli | Transplant outdoors (fall) | Aug 20 – Aug 31 |
| Cabbage | Start seeds indoors (spring) | Jan 13 – Feb 10 |
| Cabbage | Transplant outdoors (spring) | Feb 10 – Mar 13 |
| Cabbage | Start seeds indoors (fall) | Jul 11 – Aug 10 |
| Cabbage | Transplant outdoors (fall) | Aug 10 – Sep 10 |
| Leaf lettuce | Sow outdoors (spring) | Feb 10 – Apr 28 |
| Leaf lettuce | Sow outdoors (fall) | Aug 10 – Sep 26 |
| Spinach | Sow outdoors (spring) | Feb 3 – Mar 19 |
| Spinach | Sow outdoors (fall) | Aug 27 – Oct 1 |
| Radishes | Sow outdoors (spring) | Feb 10 – Apr 2 |
| Radishes | Sow outdoors (fall) | Aug 10 – Oct 11 |
| Kale | Sow outdoors (spring) | Feb 27 – Mar 19 |
| Kale | Sow outdoors (fall) | Aug 3 – Sep 10 |
| Carrots | Sow outdoors (spring) | Mar 13 – Apr 28 |
| Carrots | Sow outdoors (fall) | Jul 11 – Aug 26 |
| Garlic | Plant outdoors (fall) | Nov 10 – Dec 11 |
Where these dates come from
ZIP code 76209 is matched to the NOAA station Denton 2 Se, TX, 4 km away, at 630 ft elevation (36 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Denton 2 Se, TX (used) | 630 ft | Mar 13 | Nov 20 |
| Denton Muni Ap, TX | 642 ft | Mar 24 | Nov 7 |
| Pilot Point Isl Du Boi, TX | 690 ft | Mar 24 | Nov 16 |
| Grapevine Dam, TX | 585 ft | Mar 14 | Nov 17 |
Frost dates near Denton
- Denton, TX 76202 · last Mar 13, first Nov 20
- Flower Mound, TX 75027 · last Mar 13, first Nov 20
- Aubrey, TX 76227 · last Mar 13, first Nov 20
- Argyle, TX 76226 · last Mar 24, first Nov 7
- Sanger, TX 76266 · last Mar 24, first Nov 7
- Krum, TX 76249 · last Mar 24, first Nov 7
- Lake Dallas, TX 75065 · last Mar 13, first Nov 20
- Little Elm, TX 75068 · last Mar 13, first Nov 20
Frequently asked questions
- When is the last frost in Denton, TX?
- For ZIP code 76209, the average last spring frost (32°F) is March 13, based on NOAA 1991-2020 climate normals for the Denton 2 Se, TX weather station. There is a 1-in-10 chance of a frost after March 31.
- When is the first frost in Denton, TX?
- The average first fall frost (32°F) is November 20. There is a 1-in-10 chance of frost by November 3, so tender plants are at risk from that point on.
- How long is the growing season in 76209?
- 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.