Frost dates for 73625Butler, OK
The average last spring frost in Butler is April 9 and the average first fall frost is October 28, giving a typical growing season of about 199 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 9
- Average first fall frost
- Oct 28
- Growing season
- 199 days
Safer after Apr 24 (1-in-10 risk)
Possible by Oct 14 (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 4 · Apr 20 · May 4 | Oct 6 · Oct 20 · Nov 1 | 181 days | 100% |
| Frost / freeze (32°F) | Mar 25 · Apr 9 · Apr 24 | Oct 14 · Oct 28 · Nov 9 | 199 days | 100% |
| Hard freeze (28°F) | Mar 12 · Mar 31 · Apr 16 | Oct 21 · Nov 4 · Nov 18 | 218 days | 100% |
Planting calendar for Butler
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 9 – May 15 |
| Tomatoes | Transplant outdoors | Apr 25 – Jul 8 |
| Peppers | Start seeds indoors | Mar 9 – Apr 9 |
| Peppers | Transplant outdoors | May 9 – Jun 9 |
| Eggplant | Start seeds indoors | Mar 26 – Apr 24 |
| Eggplant | Transplant outdoors | May 9 – Jun 9 |
| Cucumbers | Sow outdoors | May 9 – Jul 18 |
| Summer squash | Sow outdoors | Apr 25 – Jun 9 |
| Winter squash & pumpkins | Sow outdoors | May 9 – Jun 9 |
| Snap beans | Sow outdoors | Apr 25 – Aug 10 |
| Sweet corn | Sow outdoors | Apr 25 – Jul 8 |
| Watermelon & cantaloupe | Sow outdoors | May 9 – Jun 9 |
| Okra | Sow outdoors | May 2 – May 25 |
| Peas | Sow outdoors (spring) | Mar 9 – Apr 24 |
| Potatoes | Plant outdoors (spring) | Mar 9 – May 9 |
| Onions | Start seeds indoors (spring) | Jan 26 – Feb 22 |
| Onions | Transplant outdoors (spring) | Mar 26 – Apr 24 |
| Broccoli | Start seeds indoors (spring) | Feb 19 – Mar 25 |
| Broccoli | Transplant outdoors (spring) | Mar 26 – Apr 24 |
| Broccoli | Start seeds indoors (fall) | Jun 28 – Jul 8 |
| Broccoli | Transplant outdoors (fall) | Jul 28 – Aug 8 |
| Cabbage | Start seeds indoors (spring) | Feb 9 – Mar 9 |
| Cabbage | Transplant outdoors (spring) | Mar 9 – Apr 9 |
| Cabbage | Start seeds indoors (fall) | Jun 18 – Jul 18 |
| Cabbage | Transplant outdoors (fall) | Jul 18 – Aug 18 |
| Leaf lettuce | Sow outdoors (spring) | Mar 9 – May 25 |
| Leaf lettuce | Sow outdoors (fall) | Jul 18 – Sep 3 |
| Spinach | Sow outdoors (spring) | Mar 2 – Apr 15 |
| Spinach | Sow outdoors (fall) | Aug 4 – Sep 8 |
| Radishes | Sow outdoors (spring) | Mar 9 – Apr 29 |
| Radishes | Sow outdoors (fall) | Jul 18 – Sep 18 |
| Kale | Sow outdoors (spring) | Mar 26 – Apr 15 |
| Kale | Sow outdoors (fall) | Jul 11 – Aug 18 |
| Carrots | Sow outdoors (spring) | Apr 9 – May 25 |
| Carrots | Sow outdoors (fall) | Jun 18 – Aug 3 |
| Garlic | Plant outdoors (fall) | Oct 18 – Nov 18 |
Where these dates come from
ZIP code 73625 is matched to the NOAA station Butler 5Sw Mesonet, OK, 5.3 km away, at 1,706 ft elevation (36 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Butler 5Sw Mesonet, OK (used) | 1,706 ft | Apr 9 | Oct 28 |
| Hammon 3 Ssw, OK | 1,820 ft | Apr 16 | Oct 23 |
| Clinton, OK | 1,570 ft | Apr 13 | Oct 28 |
| Bessie 4Wnw Mesonet, OK | 1,676 ft | Apr 3 | Nov 1 |
Frost dates near Butler
- Hammon, OK 73650 · last Apr 16, first Oct 23
- Foss, OK 73647 · last Apr 13, first Oct 28
- Canute, OK 73626 · last Apr 5, first Nov 4
- Arapaho, OK 73620 · last Apr 13, first Oct 28
- Clinton, OK 73601 · last Apr 13, first Oct 28
- Leedey, OK 73654 · last Apr 15, first Oct 23
- Elk City, OK 73648 · last Apr 5, first Nov 2
- Custer City, OK 73639 · last Apr 13, first Oct 28
Frequently asked questions
- When is the last frost in Butler, OK?
- For ZIP code 73625, the average last spring frost (32°F) is April 9, based on NOAA 1991-2020 climate normals for the Butler 5Sw Mesonet, OK weather station. There is a 1-in-10 chance of a frost after April 24.
- When is the first frost in Butler, OK?
- The average first fall frost (32°F) is October 28. There is a 1-in-10 chance of frost by October 14, so tender plants are at risk from that point on.
- How long is the growing season in 73625?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 199 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.