Frost dates for 74001Avant, OK
The average last spring frost in Avant 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)
First frost typically in 5 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 Avant
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 74001 is matched to the NOAA station Barnsdall, OK, 12.6 km away, at 770 ft elevation (91 ft higher 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 |
| Bartlesville 3, OK | 715 ft | Apr 11 | Oct 24 |
| Bartlesville F P Fld, OK | 715 ft | Apr 12 | Oct 21 |
| Pawhuska, OK | 835 ft | Apr 6 | Oct 29 |
Frost dates near Avant
- Barnsdall, OK 74002 · last Mar 31, first Oct 31
- Skiatook, OK 74070 · last Mar 31, first Nov 4
- Ochelata, OK 74051 · last Apr 12, first Oct 21
- Vera, OK 74082 · last Mar 31, first Nov 4
- Ramona, OK 74061 · last Apr 12, first Oct 21
- Tulsa, OK 74156 · last Mar 31, first Nov 4
- Sperry, OK 74073 · last Mar 31, first Nov 4
- Collinsville, OK 74021 · last Mar 31, first Nov 4
Frequently asked questions
- When is the last frost in Avant, OK?
- For ZIP code 74001, 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 Avant, 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 74001?
- 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.