Frost dates for 73011Bradley, OK
The average last spring frost in Bradley is April 13 and the average first fall frost is October 27, giving a typical growing season of about 196 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 13
- Average first fall frost
- Oct 27
- Growing season
- 196 days
Safer after Apr 28 (1-in-10 risk)
Possible by Oct 12 (1-in-10 risk)
First frost typically in 2 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 8 · Apr 21 · May 5 | Oct 4 · Oct 18 · Nov 2 | 178 days | 100% |
| Frost / freeze (32°F) | Mar 29 · Apr 13 · Apr 28 | Oct 12 · Oct 27 · Nov 10 | 196 days | 100% |
| Hard freeze (28°F) | Mar 15 · Apr 2 · Apr 19 | Oct 20 · Nov 4 · Nov 19 | 217 days | 100% |
Planting calendar for Bradley
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 13 – May 19 |
| Tomatoes | Transplant outdoors | Apr 29 – Jul 7 |
| Peppers | Start seeds indoors | Mar 13 – Apr 13 |
| Peppers | Transplant outdoors | May 13 – Jun 13 |
| Eggplant | Start seeds indoors | Mar 30 – Apr 28 |
| Eggplant | Transplant outdoors | May 13 – Jun 13 |
| Cucumbers | Sow outdoors | May 13 – Jul 17 |
| Summer squash | Sow outdoors | Apr 29 – Jun 13 |
| Winter squash & pumpkins | Sow outdoors | May 13 – Jun 13 |
| Snap beans | Sow outdoors | Apr 29 – Aug 9 |
| Sweet corn | Sow outdoors | Apr 29 – Jul 7 |
| Watermelon & cantaloupe | Sow outdoors | May 13 – Jun 13 |
| Okra | Sow outdoors | May 6 – May 29 |
| Peas | Sow outdoors (spring) | Mar 13 – Apr 28 |
| Potatoes | Plant outdoors (spring) | Mar 13 – May 13 |
| Onions | Start seeds indoors (spring) | Jan 30 – Feb 26 |
| Onions | Transplant outdoors (spring) | Mar 30 – Apr 28 |
| Broccoli | Start seeds indoors (spring) | Feb 23 – Mar 29 |
| Broccoli | Transplant outdoors (spring) | Mar 30 – Apr 28 |
| Broccoli | Start seeds indoors (fall) | Jun 27 – Jul 7 |
| Broccoli | Transplant outdoors (fall) | Jul 27 – Aug 7 |
| Cabbage | Start seeds indoors (spring) | Feb 13 – Mar 13 |
| Cabbage | Transplant outdoors (spring) | Mar 13 – Apr 13 |
| Cabbage | Start seeds indoors (fall) | Jun 17 – Jul 17 |
| Cabbage | Transplant outdoors (fall) | Jul 17 – Aug 17 |
| Leaf lettuce | Sow outdoors (spring) | Mar 13 – May 29 |
| Leaf lettuce | Sow outdoors (fall) | Jul 17 – Sep 2 |
| Spinach | Sow outdoors (spring) | Mar 6 – Apr 19 |
| Spinach | Sow outdoors (fall) | Aug 3 – Sep 7 |
| Radishes | Sow outdoors (spring) | Mar 13 – May 3 |
| Radishes | Sow outdoors (fall) | Jul 17 – Sep 17 |
| Kale | Sow outdoors (spring) | Mar 30 – Apr 19 |
| Kale | Sow outdoors (fall) | Jul 10 – Aug 17 |
| Carrots | Sow outdoors (spring) | Apr 13 – May 29 |
| Carrots | Sow outdoors (fall) | Jun 17 – Aug 2 |
| Garlic | Plant outdoors (fall) | Oct 17 – Nov 17 |
Where these dates come from
ZIP code 73011 is matched to the NOAA station Lindsay 2 W, OK, 8.6 km away, at 980 ft elevation (103 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Lindsay 2 W, OK (used) | 980 ft | Apr 13 | Oct 27 |
| Washington 6Ssw Mesonet, OK | 1,131 ft | Mar 31 | Nov 3 |
| Chickasha 2Sse Mesonet, OK | 1,076 ft | Apr 6 | Nov 1 |
| Chickasha Exp Station, OK | 1,085 ft | Apr 4 | Nov 1 |
Frost dates near Bradley
- Alex, OK 73002 · last Apr 4, first Nov 1
- Lindsay, OK 73052 · last Apr 13, first Oct 27
- Dibble, OK 73031 · last Apr 3, first Nov 4
- Ninnekah, OK 73067 · last Apr 4, first Nov 1
- Rush Springs, OK 73082 · last Apr 4, first Oct 31
- Chickasha, OK 73018 · last Apr 4, first Nov 1
- Blanchard, OK 73010 · last Apr 3, first Nov 4
- Maysville, OK 73057 · last Apr 5, first Nov 1
Frequently asked questions
- When is the last frost in Bradley, OK?
- For ZIP code 73011, the average last spring frost (32°F) is April 13, based on NOAA 1991-2020 climate normals for the Lindsay 2 W, OK weather station. There is a 1-in-10 chance of a frost after April 28.
- When is the first frost in Bradley, OK?
- The average first fall frost (32°F) is October 27. There is a 1-in-10 chance of frost by October 12, so tender plants are at risk from that point on.
- How long is the growing season in 73011?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 196 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.