Frost dates for 72638Green Forest, AR
The average last spring frost in Green Forest is April 3 and the average first fall frost is October 30, giving a typical growing season of about 210 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 3
- Average first fall frost
- Oct 30
- Growing season
- 210 days
Safer after Apr 21 (1-in-10 risk)
Possible by Oct 16 (1-in-10 risk)
First frost typically in 3 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 30 · Apr 15 · May 2 | Oct 7 · Oct 21 · Nov 2 | 186 days | 100% |
| Frost / freeze (32°F) | Mar 17 · Apr 3 · Apr 21 | Oct 16 · Oct 30 · Nov 14 | 210 days | 100% |
| Hard freeze (28°F) | Mar 4 · Mar 24 · Apr 9 | Oct 27 · Nov 10 · Nov 30 | 232 days | 100% |
Planting calendar for Green Forest
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 3 – May 9 |
| Tomatoes | Transplant outdoors | Apr 19 – Jul 10 |
| Peppers | Start seeds indoors | Mar 3 – Apr 3 |
| Peppers | Transplant outdoors | May 3 – Jun 3 |
| Eggplant | Start seeds indoors | Mar 20 – Apr 18 |
| Eggplant | Transplant outdoors | May 3 – Jun 3 |
| Cucumbers | Sow outdoors | May 3 – Jul 20 |
| Summer squash | Sow outdoors | Apr 19 – Jun 3 |
| Winter squash & pumpkins | Sow outdoors | May 3 – Jun 3 |
| Snap beans | Sow outdoors | Apr 19 – Aug 12 |
| Sweet corn | Sow outdoors | Apr 19 – Jul 10 |
| Watermelon & cantaloupe | Sow outdoors | May 3 – Jun 3 |
| Okra | Sow outdoors | Apr 26 – May 19 |
| Peas | Sow outdoors (spring) | Mar 3 – Apr 18 |
| Potatoes | Plant outdoors (spring) | Mar 3 – May 3 |
| Onions | Start seeds indoors (spring) | Jan 20 – Feb 16 |
| Onions | Transplant outdoors (spring) | Mar 20 – Apr 18 |
| Broccoli | Start seeds indoors (spring) | Feb 13 – Mar 19 |
| Broccoli | Transplant outdoors (spring) | Mar 20 – Apr 18 |
| Broccoli | Start seeds indoors (fall) | Jun 30 – Jul 10 |
| Broccoli | Transplant outdoors (fall) | Jul 30 – Aug 10 |
| Cabbage | Start seeds indoors (spring) | Feb 3 – Mar 3 |
| Cabbage | Transplant outdoors (spring) | Mar 3 – Apr 3 |
| Cabbage | Start seeds indoors (fall) | Jun 20 – Jul 20 |
| Cabbage | Transplant outdoors (fall) | Jul 20 – Aug 20 |
| Leaf lettuce | Sow outdoors (spring) | Mar 3 – May 19 |
| Leaf lettuce | Sow outdoors (fall) | Jul 20 – Sep 5 |
| Spinach | Sow outdoors (spring) | Feb 24 – Apr 9 |
| Spinach | Sow outdoors (fall) | Aug 6 – Sep 10 |
| Radishes | Sow outdoors (spring) | Mar 3 – Apr 23 |
| Radishes | Sow outdoors (fall) | Jul 20 – Sep 20 |
| Kale | Sow outdoors (spring) | Mar 20 – Apr 9 |
| Kale | Sow outdoors (fall) | Jul 13 – Aug 20 |
| Carrots | Sow outdoors (spring) | Apr 3 – May 19 |
| Carrots | Sow outdoors (fall) | Jun 20 – Aug 5 |
| Garlic | Plant outdoors (fall) | Oct 20 – Nov 20 |
Where these dates come from
ZIP code 72638 is matched to the NOAA station Harrison Boone Co Ap, AR, 23.2 km away, at 1,374 ft elevation (160 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Harrison Boone Co Ap, AR (used) | 1,374 ft | Apr 3 | Oct 30 |
| Harrison, AR | 1,132 ft | Mar 22 | Nov 9 |
| Branson Ap, MO | 1,286 ft | Apr 8 | Nov 2 |
| Kingston 2S, AR | 2,145 ft | Apr 13 | Oct 29 |
Frost dates near Green Forest
- Alpena, AR 72611 · last Apr 3, first Oct 30
- Berryville, AR 72616 · last Apr 3, first Oct 30
- Oak Grove, AR 72660 · last Apr 3, first Oct 30
- Omaha, AR 72662 · last Apr 8, first Nov 2
- Ridgedale, MO 65739 · last Apr 8, first Nov 2
- Blue Eye, MO 65611 · last Apr 16, first Oct 21
- Compton, AR 72624 · last Apr 13, first Oct 29
- Harrison, AR 72601 · last Apr 3, first Oct 30
Frequently asked questions
- When is the last frost in Green Forest, AR?
- For ZIP code 72638, the average last spring frost (32°F) is April 3, based on NOAA 1991-2020 climate normals for the Harrison Boone Co Ap, AR weather station. There is a 1-in-10 chance of a frost after April 21.
- When is the first frost in Green Forest, AR?
- The average first fall frost (32°F) is October 30. There is a 1-in-10 chance of frost by October 16, so tender plants are at risk from that point on.
- How long is the growing season in 72638?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 210 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.