Frost dates for 74738Grant, OK
The average last spring frost in Grant is March 15 and the average first fall frost is November 15, giving a typical growing season of about 244 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 15
- Average first fall frost
- Nov 15
- Growing season
- 244 days
Safer after Apr 4 (1-in-10 risk)
Possible by Oct 29 (1-in-10 risk)
First frost typically in 17 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 10 · Mar 31 · Apr 18 | Oct 21 · Nov 4 · Nov 21 | 219 days | 100% |
| Frost / freeze (32°F) | Feb 25 · Mar 15 · Apr 4 | Oct 29 · Nov 15 · Dec 3 | 244 days | 100% |
| Hard freeze (28°F) | Feb 5 · Mar 2 · Mar 22 | Nov 6 · Nov 30 · Dec 20 | 269 days | 100% |
Planting calendar for Grant
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 12 – Apr 20 |
| Tomatoes | Transplant outdoors | Mar 31 – Jul 26 |
| Peppers | Start seeds indoors | Feb 12 – Mar 15 |
| Peppers | Transplant outdoors | Apr 14 – May 15 |
| Eggplant | Start seeds indoors | Mar 1 – Mar 30 |
| Eggplant | Transplant outdoors | Apr 14 – May 15 |
| Cucumbers | Sow outdoors | Apr 14 – Aug 5 |
| Summer squash | Sow outdoors | Mar 31 – May 15 |
| Winter squash & pumpkins | Sow outdoors | Apr 14 – May 15 |
| Snap beans | Sow outdoors | Mar 31 – Aug 28 |
| Sweet corn | Sow outdoors | Mar 31 – Jul 26 |
| Watermelon & cantaloupe | Sow outdoors | Apr 14 – May 15 |
| Okra | Sow outdoors | Apr 7 – Apr 30 |
| Peas | Sow outdoors (spring) | Feb 12 – Mar 30 |
| Potatoes | Plant outdoors (spring) | Feb 12 – Apr 14 |
| Onions | Start seeds indoors (spring) | Jan 1 – Jan 28 |
| Onions | Transplant outdoors (spring) | Mar 1 – Mar 30 |
| Broccoli | Start seeds indoors (spring) | Jan 25 – Feb 28 |
| Broccoli | Transplant outdoors (spring) | Mar 1 – Mar 30 |
| Broccoli | Start seeds indoors (fall) | Jul 16 – Jul 26 |
| Broccoli | Transplant outdoors (fall) | Aug 15 – Aug 26 |
| Cabbage | Start seeds indoors (spring) | Jan 15 – Feb 12 |
| Cabbage | Transplant outdoors (spring) | Feb 12 – Mar 15 |
| Cabbage | Start seeds indoors (fall) | Jul 6 – Aug 5 |
| Cabbage | Transplant outdoors (fall) | Aug 5 – Sep 5 |
| Leaf lettuce | Sow outdoors (spring) | Feb 12 – Apr 30 |
| Leaf lettuce | Sow outdoors (fall) | Aug 5 – Sep 21 |
| Spinach | Sow outdoors (spring) | Feb 5 – Mar 21 |
| Spinach | Sow outdoors (fall) | Aug 22 – Sep 26 |
| Radishes | Sow outdoors (spring) | Feb 12 – Apr 4 |
| Radishes | Sow outdoors (fall) | Aug 5 – Oct 6 |
| Kale | Sow outdoors (spring) | Mar 1 – Mar 21 |
| Kale | Sow outdoors (fall) | Jul 29 – Sep 5 |
| Carrots | Sow outdoors (spring) | Mar 15 – Apr 30 |
| Carrots | Sow outdoors (fall) | Jul 6 – Aug 21 |
| Garlic | Plant outdoors (fall) | Nov 5 – Dec 6 |
Where these dates come from
ZIP code 74738 is matched to the NOAA station Hugo, OK, 11.1 km away, at 520 ft elevation (87 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Hugo, OK (used) | 520 ft | Mar 15 | Nov 15 |
| Paris, TX | 542 ft | Mar 14 | Nov 16 |
| Antlers, OK | 470 ft | Apr 3 | Nov 1 |
| Antlers 5Nw, OK | 578 ft | Apr 2 | Nov 1 |
Frost dates near Grant
- Hugo, OK 74743 · last Mar 15, first Nov 15
- Chicota, TX 75425 · last Mar 14, first Nov 16
- Arthur City, TX 75411 · last Mar 14, first Nov 16
- Sawyer, OK 74756 · last Apr 3, first Nov 1
- Powderly, TX 75473 · last Mar 14, first Nov 16
- Soper, OK 74759 · last Apr 3, first Nov 1
- Fort Towson, OK 74735 · last Apr 3, first Nov 1
- Sumner, TX 75486 · last Mar 14, first Nov 16
Frequently asked questions
- When is the last frost in Grant, OK?
- For ZIP code 74738, the average last spring frost (32°F) is March 15, based on NOAA 1991-2020 climate normals for the Hugo, OK weather station. There is a 1-in-10 chance of a frost after April 4.
- When is the first frost in Grant, OK?
- The average first fall frost (32°F) is November 15. There is a 1-in-10 chance of frost by October 29, so tender plants are at risk from that point on.
- How long is the growing season in 74738?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 244 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.