Frost dates for 74764Valliant, OK
The average last spring frost in Valliant is March 31 and the average first fall frost is November 3, giving a typical growing season of about 221 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 31
- Average first fall frost
- Nov 3
- Growing season
- 221 days
Safer after Apr 18 (1-in-10 risk)
Possible by Oct 18 (1-in-10 risk)
First frost typically in 1 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 26 · Apr 12 · Apr 28 | Oct 12 · Oct 24 · Nov 6 | 196 days | 100% |
| Frost / freeze (32°F) | Mar 9 · Mar 31 · Apr 18 | Oct 18 · Nov 3 · Nov 20 | 221 days | 100% |
| Hard freeze (28°F) | Feb 23 · Mar 13 · Apr 2 | Oct 29 · Nov 13 · Dec 1 | 246 days | 100% |
Planting calendar for Valliant
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 28 – May 6 |
| Tomatoes | Transplant outdoors | Apr 16 – Jul 14 |
| Peppers | Start seeds indoors | Feb 28 – Mar 31 |
| Peppers | Transplant outdoors | Apr 30 – May 31 |
| Eggplant | Start seeds indoors | Mar 17 – Apr 15 |
| Eggplant | Transplant outdoors | Apr 30 – May 31 |
| Cucumbers | Sow outdoors | Apr 30 – Jul 24 |
| Summer squash | Sow outdoors | Apr 16 – May 31 |
| Winter squash & pumpkins | Sow outdoors | Apr 30 – May 31 |
| Snap beans | Sow outdoors | Apr 16 – Aug 16 |
| Sweet corn | Sow outdoors | Apr 16 – Jul 14 |
| Watermelon & cantaloupe | Sow outdoors | Apr 30 – May 31 |
| Okra | Sow outdoors | Apr 23 – May 16 |
| Peas | Sow outdoors (spring) | Feb 28 – Apr 15 |
| Potatoes | Plant outdoors (spring) | Feb 28 – Apr 30 |
| Onions | Start seeds indoors (spring) | Jan 17 – Feb 13 |
| Onions | Transplant outdoors (spring) | Mar 17 – Apr 15 |
| Broccoli | Start seeds indoors (spring) | Feb 10 – Mar 16 |
| Broccoli | Transplant outdoors (spring) | Mar 17 – Apr 15 |
| Broccoli | Start seeds indoors (fall) | Jul 4 – Jul 14 |
| Broccoli | Transplant outdoors (fall) | Aug 3 – Aug 14 |
| Cabbage | Start seeds indoors (spring) | Jan 31 – Feb 28 |
| Cabbage | Transplant outdoors (spring) | Feb 28 – Mar 31 |
| Cabbage | Start seeds indoors (fall) | Jun 24 – Jul 24 |
| Cabbage | Transplant outdoors (fall) | Jul 24 – Aug 24 |
| Leaf lettuce | Sow outdoors (spring) | Feb 28 – May 16 |
| Leaf lettuce | Sow outdoors (fall) | Jul 24 – Sep 9 |
| Spinach | Sow outdoors (spring) | Feb 21 – Apr 6 |
| Spinach | Sow outdoors (fall) | Aug 10 – Sep 14 |
| Radishes | Sow outdoors (spring) | Feb 28 – Apr 20 |
| Radishes | Sow outdoors (fall) | Jul 24 – Sep 24 |
| Kale | Sow outdoors (spring) | Mar 17 – Apr 6 |
| Kale | Sow outdoors (fall) | Jul 17 – Aug 24 |
| Carrots | Sow outdoors (spring) | Mar 31 – May 16 |
| Carrots | Sow outdoors (fall) | Jun 24 – Aug 9 |
| Garlic | Plant outdoors (fall) | Oct 24 – Nov 24 |
Where these dates come from
ZIP code 74764 is matched to the NOAA station Idabel, OK, 23.7 km away, at 365 ft elevation (61 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Idabel, OK (used) | 365 ft | Mar 31 | Nov 3 |
| Broken Bow 1 N, OK | 475 ft | Apr 1 | Nov 2 |
| Hugo, OK | 520 ft | Mar 15 | Nov 15 |
| Clarksville 2Ne, TX | 435 ft | Mar 20 | Nov 10 |
Frost dates near Valliant
- Millerton, OK 74750 · last Mar 31, first Nov 3
- Wright City, OK 74766 · last Mar 31, first Nov 3
- Swink, OK 74761 · last Mar 31, first Nov 3
- Garvin, OK 74736 · last Mar 31, first Nov 3
- Rufe, OK 74755 · last Mar 31, first Nov 3
- Golden, OK 74737 · last Mar 31, first Nov 3
- Fort Towson, OK 74735 · last Apr 3, first Nov 1
- Ringold, OK 74754 · last Mar 31, first Nov 3
Frequently asked questions
- When is the last frost in Valliant, OK?
- For ZIP code 74764, the average last spring frost (32°F) is March 31, based on NOAA 1991-2020 climate normals for the Idabel, OK weather station. There is a 1-in-10 chance of a frost after April 18.
- When is the first frost in Valliant, OK?
- The average first fall frost (32°F) is November 3. There is a 1-in-10 chance of frost by October 18, so tender plants are at risk from that point on.
- How long is the growing season in 74764?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 221 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.