Frost dates for 74002Barnsdall, OK
The average last spring frost in Barnsdall is March 31 and the average first fall frost is October 31, giving a typical growing season of about 212 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 31
- Average first fall frost
- Oct 31
- Growing season
- 212 days
Safer after Apr 14 (1-in-10 risk)
Possible by Oct 14 (1-in-10 risk)
Last frost typically in 149 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 28 · Apr 11 · Apr 27 | Oct 4 · Oct 21 · Nov 3 | 191 days | 100% |
| Frost / freeze (32°F) | Mar 12 · Mar 31 · Apr 14 | Oct 14 · Oct 31 · Nov 13 | 212 days | 100% |
| Hard freeze (28°F) | Feb 28 · Mar 20 · Apr 6 | Oct 24 · Nov 8 · Nov 27 | 235 days | 100% |
Planting calendar for Barnsdall
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 28 – May 6 |
| Tomatoes | Transplant outdoors | Apr 16 – Jul 11 |
| Peppers | Start seeds indoors | Feb 28 – Mar 31 |
| Peppers | Transplant outdoors | Apr 30 – May 31 |
| Eggplant | Start seeds indoors | Mar 17 – Apr 15 |
| Eggplant | Transplant outdoors | Apr 30 – May 31 |
| Cucumbers | Sow outdoors | Apr 30 – Jul 21 |
| Summer squash | Sow outdoors | Apr 16 – May 31 |
| Winter squash & pumpkins | Sow outdoors | Apr 30 – May 31 |
| Snap beans | Sow outdoors | Apr 16 – Aug 13 |
| Sweet corn | Sow outdoors | Apr 16 – Jul 11 |
| Watermelon & cantaloupe | Sow outdoors | Apr 30 – May 31 |
| Okra | Sow outdoors | Apr 23 – May 16 |
| Peas | Sow outdoors (spring) | Feb 28 – Apr 15 |
| Potatoes | Plant outdoors (spring) | Feb 28 – Apr 30 |
| Onions | Start seeds indoors (spring) | Jan 17 – Feb 13 |
| Onions | Transplant outdoors (spring) | Mar 17 – Apr 15 |
| Broccoli | Start seeds indoors (spring) | Feb 10 – Mar 16 |
| Broccoli | Transplant outdoors (spring) | Mar 17 – Apr 15 |
| Broccoli | Start seeds indoors (fall) | Jul 1 – Jul 11 |
| Broccoli | Transplant outdoors (fall) | Jul 31 – Aug 11 |
| Cabbage | Start seeds indoors (spring) | Jan 31 – Feb 28 |
| Cabbage | Transplant outdoors (spring) | Feb 28 – Mar 31 |
| Cabbage | Start seeds indoors (fall) | Jun 21 – Jul 21 |
| Cabbage | Transplant outdoors (fall) | Jul 21 – Aug 21 |
| Leaf lettuce | Sow outdoors (spring) | Feb 28 – May 16 |
| Leaf lettuce | Sow outdoors (fall) | Jul 21 – Sep 6 |
| Spinach | Sow outdoors (spring) | Feb 21 – Apr 6 |
| Spinach | Sow outdoors (fall) | Aug 7 – Sep 11 |
| Radishes | Sow outdoors (spring) | Feb 28 – Apr 20 |
| Radishes | Sow outdoors (fall) | Jul 21 – Sep 21 |
| Kale | Sow outdoors (spring) | Mar 17 – Apr 6 |
| Kale | Sow outdoors (fall) | Jul 14 – Aug 21 |
| Carrots | Sow outdoors (spring) | Mar 31 – May 16 |
| Carrots | Sow outdoors (fall) | Jun 21 – Aug 6 |
| Garlic | Plant outdoors (fall) | Oct 21 – Nov 21 |
Where these dates come from
ZIP code 74002 is matched to the NOAA station Barnsdall, OK, 4 km away, at 770 ft elevation (8 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Barnsdall, OK (used) | 770 ft | Mar 31 | Oct 31 |
| Pawhuska, OK | 835 ft | Apr 6 | Oct 29 |
| Bartlesville 3, OK | 715 ft | Apr 11 | Oct 24 |
| Bartlesville F P Fld, OK | 715 ft | Apr 12 | Oct 21 |
Frost dates near Barnsdall
- Avant, OK 74001 · last Mar 31, first Oct 31
- Ochelata, OK 74051 · last Apr 12, first Oct 21
- Wynona, OK 74084 · last Apr 6, first Oct 29
- Ramona, OK 74061 · last Apr 12, first Oct 21
- Skiatook, OK 74070 · last Mar 31, first Nov 4
- Pawhuska, OK 74056 · last Apr 6, first Oct 29
- Vera, OK 74082 · last Mar 31, first Nov 4
- Bartlesville, OK 74003 · last Apr 12, first Oct 21
Frequently asked questions
- When is the last frost in Barnsdall, OK?
- For ZIP code 74002, the average last spring frost (32°F) is March 31, based on NOAA 1991-2020 climate normals for the Barnsdall, OK weather station. There is a 1-in-10 chance of a frost after April 14.
- When is the first frost in Barnsdall, OK?
- The average first fall frost (32°F) is October 31. 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 74002?
- 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.