Frost dates for 73098Wynnewood, OK
The average last spring frost in Wynnewood is April 5 and the average first fall frost is November 1, giving a typical growing season of about 210 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 5
- Average first fall frost
- Nov 1
- Growing season
- 210 days
Safer after Apr 21 (1-in-10 risk)
Possible by Oct 18 (1-in-10 risk)
First frost typically in 7 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) | Apr 1 · Apr 15 · May 1 | Oct 8 · Oct 23 · Nov 6 | 190 days | 100% |
| Frost / freeze (32°F) | Mar 19 · Apr 5 · Apr 21 | Oct 18 · Nov 1 · Nov 16 | 210 days | 100% |
| Hard freeze (28°F) | Mar 4 · Mar 24 · Apr 8 | Oct 25 · Nov 9 · Nov 29 | 232 days | 100% |
Planting calendar for Wynnewood
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 | Mar 5 – May 11 |
| Tomatoes | Transplant outdoors | Apr 21 – Jul 12 |
| Peppers | Start seeds indoors | Mar 5 – Apr 5 |
| Peppers | Transplant outdoors | May 5 – Jun 5 |
| Eggplant | Start seeds indoors | Mar 22 – Apr 20 |
| Eggplant | Transplant outdoors | May 5 – Jun 5 |
| Cucumbers | Sow outdoors | May 5 – Jul 22 |
| Summer squash | Sow outdoors | Apr 21 – Jun 5 |
| Winter squash & pumpkins | Sow outdoors | May 5 – Jun 5 |
| Snap beans | Sow outdoors | Apr 21 – Aug 14 |
| Sweet corn | Sow outdoors | Apr 21 – Jul 12 |
| Watermelon & cantaloupe | Sow outdoors | May 5 – Jun 5 |
| Okra | Sow outdoors | Apr 28 – May 21 |
| Peas | Sow outdoors (spring) | Mar 5 – Apr 20 |
| Potatoes | Plant outdoors (spring) | Mar 5 – May 5 |
| Onions | Start seeds indoors (spring) | Jan 22 – Feb 18 |
| Onions | Transplant outdoors (spring) | Mar 22 – Apr 20 |
| Broccoli | Start seeds indoors (spring) | Feb 15 – Mar 21 |
| Broccoli | Transplant outdoors (spring) | Mar 22 – Apr 20 |
| Broccoli | Start seeds indoors (fall) | Jul 2 – Jul 12 |
| Broccoli | Transplant outdoors (fall) | Aug 1 – Aug 12 |
| Cabbage | Start seeds indoors (spring) | Feb 5 – Mar 5 |
| Cabbage | Transplant outdoors (spring) | Mar 5 – Apr 5 |
| Cabbage | Start seeds indoors (fall) | Jun 22 – Jul 22 |
| Cabbage | Transplant outdoors (fall) | Jul 22 – Aug 22 |
| Leaf lettuce | Sow outdoors (spring) | Mar 5 – May 21 |
| Leaf lettuce | Sow outdoors (fall) | Jul 22 – Sep 7 |
| Spinach | Sow outdoors (spring) | Feb 26 – Apr 11 |
| Spinach | Sow outdoors (fall) | Aug 8 – Sep 12 |
| Radishes | Sow outdoors (spring) | Mar 5 – Apr 25 |
| Radishes | Sow outdoors (fall) | Jul 22 – Sep 22 |
| Kale | Sow outdoors (spring) | Mar 22 – Apr 11 |
| Kale | Sow outdoors (fall) | Jul 15 – Aug 22 |
| Carrots | Sow outdoors (spring) | Apr 5 – May 21 |
| Carrots | Sow outdoors (fall) | Jun 22 – Aug 7 |
| Garlic | Plant outdoors (fall) | Oct 22 – Nov 22 |
Where these dates come from
ZIP code 73098 is matched to the NOAA station Pauls Valley 4 Wsw, OK, 13.6 km away, at 940 ft elevation (107 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Pauls Valley 4 Wsw, OK (used) | 940 ft | Apr 5 | Nov 1 |
| Pauls Vly 1Ssw Mesonet, OK | 954 ft | Mar 28 | Nov 7 |
| Sulphur 4Nne Mesonet, OK | 1,049 ft | Apr 4 | Nov 1 |
| Chickasaw Nra, OK | 1,047 ft | Apr 4 | Oct 31 |
Frost dates near Wynnewood
- Pauls Valley, OK 73075 · last Apr 5, first Nov 1
- Davis, OK 73039 · last Apr 4, first Oct 31
- Elmore City, OK 73433 · last Apr 5, first Nov 1
- Paoli, OK 73074 · last Apr 5, first Nov 1
- Sulphur, OK 73086 · last Apr 4, first Oct 31
- Stratford, OK 74872 · last Mar 25, first Nov 8
- Hennepin, OK 73444 · last Apr 6, first Nov 1
- Dougherty, OK 73032 · last Apr 4, first Oct 31
Frequently asked questions
- When is the last frost in Wynnewood, OK?
- For ZIP code 73098, the average last spring frost (32°F) is April 5, based on NOAA 1991-2020 climate normals for the Pauls Valley 4 Wsw, OK weather station. There is a 1-in-10 chance of a frost after April 21.
- When is the first frost in Wynnewood, OK?
- The average first fall frost (32°F) is November 1. 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 73098?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 210 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.