Frost dates for 74429Coweta, OK
The average last spring frost in Coweta is April 1 and the average first fall frost is November 1, giving a typical growing season of about 212 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 1
- Average first fall frost
- Nov 1
- Growing season
- 212 days
Safer after Apr 20 (1-in-10 risk)
Possible by Oct 16 (1-in-10 risk)
First frost typically in 6 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 27 · Apr 13 · Apr 29 | Oct 8 · Oct 22 · Nov 4 | 190 days | 100% |
| Frost / freeze (32°F) | Mar 12 · Apr 1 · Apr 20 | Oct 16 · Nov 1 · Nov 13 | 212 days | 100% |
| Hard freeze (28°F) | Feb 28 · Mar 17 · Apr 7 | Oct 26 · Nov 9 · Nov 27 | 236 days | 100% |
Planting calendar for Coweta
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 1 – May 7 |
| Tomatoes | Transplant outdoors | Apr 17 – Jul 12 |
| Peppers | Start seeds indoors | Mar 1 – Apr 1 |
| Peppers | Transplant outdoors | May 1 – Jun 1 |
| Eggplant | Start seeds indoors | Mar 18 – Apr 16 |
| Eggplant | Transplant outdoors | May 1 – Jun 1 |
| Cucumbers | Sow outdoors | May 1 – Jul 22 |
| Summer squash | Sow outdoors | Apr 17 – Jun 1 |
| Winter squash & pumpkins | Sow outdoors | May 1 – Jun 1 |
| Snap beans | Sow outdoors | Apr 17 – Aug 14 |
| Sweet corn | Sow outdoors | Apr 17 – Jul 12 |
| Watermelon & cantaloupe | Sow outdoors | May 1 – Jun 1 |
| Okra | Sow outdoors | Apr 24 – May 17 |
| Peas | Sow outdoors (spring) | Mar 1 – Apr 16 |
| Potatoes | Plant outdoors (spring) | Mar 1 – May 1 |
| Onions | Start seeds indoors (spring) | Jan 18 – Feb 14 |
| Onions | Transplant outdoors (spring) | Mar 18 – Apr 16 |
| Broccoli | Start seeds indoors (spring) | Feb 11 – Mar 17 |
| Broccoli | Transplant outdoors (spring) | Mar 18 – Apr 16 |
| Broccoli | Start seeds indoors (fall) | Jul 2 – Jul 12 |
| Broccoli | Transplant outdoors (fall) | Aug 1 – Aug 12 |
| Cabbage | Start seeds indoors (spring) | Feb 1 – Mar 1 |
| Cabbage | Transplant outdoors (spring) | Mar 1 – Apr 1 |
| Cabbage | Start seeds indoors (fall) | Jun 22 – Jul 22 |
| Cabbage | Transplant outdoors (fall) | Jul 22 – Aug 22 |
| Leaf lettuce | Sow outdoors (spring) | Mar 1 – May 17 |
| Leaf lettuce | Sow outdoors (fall) | Jul 22 – Sep 7 |
| Spinach | Sow outdoors (spring) | Feb 22 – Apr 7 |
| Spinach | Sow outdoors (fall) | Aug 8 – Sep 12 |
| Radishes | Sow outdoors (spring) | Mar 1 – Apr 21 |
| Radishes | Sow outdoors (fall) | Jul 22 – Sep 22 |
| Kale | Sow outdoors (spring) | Mar 18 – Apr 7 |
| Kale | Sow outdoors (fall) | Jul 15 – Aug 22 |
| Carrots | Sow outdoors (spring) | Apr 1 – May 17 |
| Carrots | Sow outdoors (fall) | Jun 22 – Aug 7 |
| Garlic | Plant outdoors (fall) | Oct 22 – Nov 22 |
Where these dates come from
ZIP code 74429 is matched to the NOAA station Bixby, OK, 21 km away, at 605 ft elevation (38 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Bixby, OK (used) | 605 ft | Apr 1 | Nov 1 |
| Wagoner, OK | 590 ft | Mar 29 | Nov 5 |
| Tulsa R L Jones Jr Ap, OK | 638 ft | Mar 30 | Nov 4 |
| Tulsa Intl Ap, OK | 650 ft | Mar 31 | Nov 4 |
Frost dates near Coweta
- Redbird, OK 74458 · last Apr 7, first Oct 30
- Broken Arrow, OK 74014 · last Apr 1, first Nov 1
- Wagoner, OK 74477 · last Apr 7, first Oct 30
- Leonard, OK 74043 · last Apr 1, first Nov 1
- Haskell, OK 74436 · last Apr 1, first Nov 1
- Porter, OK 74454 · last Apr 7, first Oct 30
- Bixby, OK 74008 · last Apr 1, first Nov 1
- Tulsa, OK 74101 · last Apr 1, first Nov 1
Frequently asked questions
- When is the last frost in Coweta, OK?
- For ZIP code 74429, the average last spring frost (32°F) is April 1, based on NOAA 1991-2020 climate normals for the Bixby, OK weather station. There is a 1-in-10 chance of a frost after April 20.
- When is the first frost in Coweta, OK?
- The average first fall frost (32°F) is November 1. There is a 1-in-10 chance of frost by October 16, so tender plants are at risk from that point on.
- How long is the growing season in 74429?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 212 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.