Frost dates for 73561Oscar, OK
The average last spring frost in Oscar is March 24 and the average first fall frost is November 8, giving a typical growing season of about 229 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 24
- Average first fall frost
- Nov 8
- Growing season
- 229 days
Safer after Apr 13 (1-in-10 risk)
Possible by Oct 25 (1-in-10 risk)
First frost typically in 12 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 17 · Apr 4 · Apr 25 | Oct 18 · Nov 1 · Nov 16 | 208 days | 100% |
| Frost / freeze (32°F) | Mar 5 · Mar 24 · Apr 13 | Oct 25 · Nov 8 · Nov 27 | 229 days | 100% |
| Hard freeze (28°F) | Feb 22 · Mar 11 · Mar 31 | Nov 1 · Nov 20 · Dec 8 | 253 days | 100% |
Planting calendar for Oscar
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 21 – Apr 29 |
| Tomatoes | Transplant outdoors | Apr 9 – Jul 19 |
| Peppers | Start seeds indoors | Feb 21 – Mar 24 |
| Peppers | Transplant outdoors | Apr 23 – May 24 |
| Eggplant | Start seeds indoors | Mar 10 – Apr 8 |
| Eggplant | Transplant outdoors | Apr 23 – May 24 |
| Cucumbers | Sow outdoors | Apr 23 – Jul 29 |
| Summer squash | Sow outdoors | Apr 9 – May 24 |
| Winter squash & pumpkins | Sow outdoors | Apr 23 – May 24 |
| Snap beans | Sow outdoors | Apr 9 – Aug 21 |
| Sweet corn | Sow outdoors | Apr 9 – Jul 19 |
| Watermelon & cantaloupe | Sow outdoors | Apr 23 – May 24 |
| Okra | Sow outdoors | Apr 16 – May 9 |
| Peas | Sow outdoors (spring) | Feb 21 – Apr 8 |
| Potatoes | Plant outdoors (spring) | Feb 21 – Apr 23 |
| Onions | Start seeds indoors (spring) | Jan 10 – Feb 6 |
| Onions | Transplant outdoors (spring) | Mar 10 – Apr 8 |
| Broccoli | Start seeds indoors (spring) | Feb 3 – Mar 9 |
| Broccoli | Transplant outdoors (spring) | Mar 10 – Apr 8 |
| Broccoli | Start seeds indoors (fall) | Jul 9 – Jul 19 |
| Broccoli | Transplant outdoors (fall) | Aug 8 – Aug 19 |
| Cabbage | Start seeds indoors (spring) | Jan 24 – Feb 21 |
| Cabbage | Transplant outdoors (spring) | Feb 21 – Mar 24 |
| Cabbage | Start seeds indoors (fall) | Jun 29 – Jul 29 |
| Cabbage | Transplant outdoors (fall) | Jul 29 – Aug 29 |
| Leaf lettuce | Sow outdoors (spring) | Feb 21 – May 9 |
| Leaf lettuce | Sow outdoors (fall) | Jul 29 – Sep 14 |
| Spinach | Sow outdoors (spring) | Feb 14 – Mar 30 |
| Spinach | Sow outdoors (fall) | Aug 15 – Sep 19 |
| Radishes | Sow outdoors (spring) | Feb 21 – Apr 13 |
| Radishes | Sow outdoors (fall) | Jul 29 – Sep 29 |
| Kale | Sow outdoors (spring) | Mar 10 – Mar 30 |
| Kale | Sow outdoors (fall) | Jul 22 – Aug 29 |
| Carrots | Sow outdoors (spring) | Mar 24 – May 9 |
| Carrots | Sow outdoors (fall) | Jun 29 – Aug 14 |
| Garlic | Plant outdoors (fall) | Oct 29 – Nov 29 |
Where these dates come from
ZIP code 73561 is matched to the NOAA station Bonita 7Nw, TX, 24.9 km away, at 980 ft elevation (114 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Bonita 7Nw, TX (used) | 980 ft | Mar 24 | Nov 8 |
| Ringling 1N Mesonet, OK | 928 ft | Mar 23 | Nov 7 |
| Healdton 3 E, OK | 902 ft | Apr 6 | Nov 1 |
| Waurika 1Ene Mesonet, OK | 928 ft | Mar 29 | Nov 5 |
Frost dates near Oscar
- Ringling, OK 73456 · last Apr 6, first Nov 1
- Terral, OK 73569 · last Mar 24, first Nov 8
- Wilson, OK 73463 · last Apr 6, first Nov 1
- Leon, OK 73441 · last Apr 6, first Nov 2
- Healdton, OK 73438 · last Apr 6, first Nov 1
- Nocona, TX 76255 · last Mar 24, first Nov 8
- Ryan, OK 73565 · last Mar 24, first Nov 8
- Burneyville, OK 73430 · last Apr 6, first Nov 2
Frequently asked questions
- When is the last frost in Oscar, OK?
- For ZIP code 73561, the average last spring frost (32°F) is March 24, based on NOAA 1991-2020 climate normals for the Bonita 7Nw, TX weather station. There is a 1-in-10 chance of a frost after April 13.
- When is the first frost in Oscar, OK?
- The average first fall frost (32°F) is November 8. There is a 1-in-10 chance of frost by October 25, so tender plants are at risk from that point on.
- How long is the growing season in 73561?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 229 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.