Frost dates for 75574Simms, TX
The average last spring frost in Simms is March 26 and the average first fall frost is November 6, giving a typical growing season of about 225 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 26
- Average first fall frost
- Nov 6
- Growing season
- 225 days
Safer after Apr 14 (1-in-10 risk)
Possible by Oct 22 (1-in-10 risk)
First frost typically in 12 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 20 · Apr 7 · Apr 24 | Oct 14 · Oct 29 · Nov 12 | 203 days | 100% |
| Frost / freeze (32°F) | Mar 6 · Mar 26 · Apr 14 | Oct 22 · Nov 6 · Nov 24 | 225 days | 100% |
| Hard freeze (28°F) | Feb 21 · Mar 11 · Mar 31 | Oct 31 · Nov 16 · Dec 6 | 250 days | 100% |
Planting calendar for Simms
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 23 – May 1 |
| Tomatoes | Transplant outdoors | Apr 11 – Jul 17 |
| Peppers | Start seeds indoors | Feb 23 – Mar 26 |
| Peppers | Transplant outdoors | Apr 25 – May 26 |
| Eggplant | Start seeds indoors | Mar 12 – Apr 10 |
| Eggplant | Transplant outdoors | Apr 25 – May 26 |
| Cucumbers | Sow outdoors | Apr 25 – Jul 27 |
| Summer squash | Sow outdoors | Apr 11 – May 26 |
| Winter squash & pumpkins | Sow outdoors | Apr 25 – May 26 |
| Snap beans | Sow outdoors | Apr 11 – Aug 19 |
| Sweet corn | Sow outdoors | Apr 11 – Jul 17 |
| Watermelon & cantaloupe | Sow outdoors | Apr 25 – May 26 |
| Okra | Sow outdoors | Apr 18 – May 11 |
| Peas | Sow outdoors (spring) | Feb 23 – Apr 10 |
| Potatoes | Plant outdoors (spring) | Feb 23 – Apr 25 |
| Onions | Start seeds indoors (spring) | Jan 12 – Feb 8 |
| Onions | Transplant outdoors (spring) | Mar 12 – Apr 10 |
| Broccoli | Start seeds indoors (spring) | Feb 5 – Mar 11 |
| Broccoli | Transplant outdoors (spring) | Mar 12 – Apr 10 |
| Broccoli | Start seeds indoors (fall) | Jul 7 – Jul 17 |
| Broccoli | Transplant outdoors (fall) | Aug 6 – Aug 17 |
| Cabbage | Start seeds indoors (spring) | Jan 26 – Feb 23 |
| Cabbage | Transplant outdoors (spring) | Feb 23 – Mar 26 |
| Cabbage | Start seeds indoors (fall) | Jun 27 – Jul 27 |
| Cabbage | Transplant outdoors (fall) | Jul 27 – Aug 27 |
| Leaf lettuce | Sow outdoors (spring) | Feb 23 – May 11 |
| Leaf lettuce | Sow outdoors (fall) | Jul 27 – Sep 12 |
| Spinach | Sow outdoors (spring) | Feb 16 – Apr 1 |
| Spinach | Sow outdoors (fall) | Aug 13 – Sep 17 |
| Radishes | Sow outdoors (spring) | Feb 23 – Apr 15 |
| Radishes | Sow outdoors (fall) | Jul 27 – Sep 27 |
| Kale | Sow outdoors (spring) | Mar 12 – Apr 1 |
| Kale | Sow outdoors (fall) | Jul 20 – Aug 27 |
| Carrots | Sow outdoors (spring) | Mar 26 – May 11 |
| Carrots | Sow outdoors (fall) | Jun 27 – Aug 12 |
| Garlic | Plant outdoors (fall) | Oct 27 – Nov 27 |
Where these dates come from
ZIP code 75574 is matched to the NOAA station Dekalb, TX, 17.1 km away, at 341 ft elevation (65 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Dekalb, TX (used) | 341 ft | Mar 26 | Nov 6 |
| Wright Patman Dm & Lk, TX | 282 ft | Mar 4 | Nov 21 |
| Atlanta, TX | 315 ft | Mar 19 | Nov 11 |
| Texarkana, TX | 390 ft | Mar 15 | Nov 17 |
Frost dates near Simms
- New Boston, TX 75570 · last Mar 26, first Nov 6
- Marietta, TX 75566 · last Mar 8, first Nov 22
- De Kalb, TX 75559 · last Mar 26, first Nov 6
- Naples, TX 75568 · last Mar 24, first Nov 7
- Maud, TX 75567 · last Mar 19, first Nov 11
- Douglassville, TX 75560 · last Mar 19, first Nov 11
- Omaha, TX 75571 · last Mar 24, first Nov 7
- Redwater, TX 75573 · last Mar 15, first Nov 17
Frequently asked questions
- When is the last frost in Simms, TX?
- For ZIP code 75574, the average last spring frost (32°F) is March 26, based on NOAA 1991-2020 climate normals for the Dekalb, TX weather station. There is a 1-in-10 chance of a frost after April 14.
- When is the first frost in Simms, TX?
- The average first fall frost (32°F) is November 6. There is a 1-in-10 chance of frost by October 22, so tender plants are at risk from that point on.
- How long is the growing season in 75574?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 225 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.