Frost dates for 71724Calion, AR
The average last spring frost in Calion is March 18 and the average first fall frost is November 7, giving a typical growing season of about 235 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 18
- Average first fall frost
- Nov 7
- Growing season
- 235 days
Safer after Apr 6 (1-in-10 risk)
Possible by Oct 24 (1-in-10 risk)
First frost typically in 4 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 14 · Apr 2 · Apr 20 | Oct 16 · Oct 30 · Nov 13 | 210 days | 100% |
| Frost / freeze (32°F) | Feb 28 · Mar 18 · Apr 6 | Oct 24 · Nov 7 · Nov 27 | 235 days | 100% |
| Hard freeze (28°F) | Feb 10 · Mar 4 · Mar 23 | Nov 3 · Nov 21 · Dec 11 | 262 days | 100% |
Planting calendar for Calion
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 15 – Apr 23 |
| Tomatoes | Transplant outdoors | Apr 3 – Jul 18 |
| Peppers | Start seeds indoors | Feb 15 – Mar 18 |
| Peppers | Transplant outdoors | Apr 17 – May 18 |
| Eggplant | Start seeds indoors | Mar 4 – Apr 2 |
| Eggplant | Transplant outdoors | Apr 17 – May 18 |
| Cucumbers | Sow outdoors | Apr 17 – Jul 28 |
| Summer squash | Sow outdoors | Apr 3 – May 18 |
| Winter squash & pumpkins | Sow outdoors | Apr 17 – May 18 |
| Snap beans | Sow outdoors | Apr 3 – Aug 20 |
| Sweet corn | Sow outdoors | Apr 3 – Jul 18 |
| Watermelon & cantaloupe | Sow outdoors | Apr 17 – May 18 |
| Okra | Sow outdoors | Apr 10 – May 3 |
| Peas | Sow outdoors (spring) | Feb 15 – Apr 2 |
| Potatoes | Plant outdoors (spring) | Feb 15 – Apr 17 |
| Onions | Start seeds indoors (spring) | Jan 4 – Jan 31 |
| Onions | Transplant outdoors (spring) | Mar 4 – Apr 2 |
| Broccoli | Start seeds indoors (spring) | Jan 28 – Mar 3 |
| Broccoli | Transplant outdoors (spring) | Mar 4 – Apr 2 |
| Broccoli | Start seeds indoors (fall) | Jul 8 – Jul 18 |
| Broccoli | Transplant outdoors (fall) | Aug 7 – Aug 18 |
| Cabbage | Start seeds indoors (spring) | Jan 18 – Feb 15 |
| Cabbage | Transplant outdoors (spring) | Feb 15 – Mar 18 |
| Cabbage | Start seeds indoors (fall) | Jun 28 – Jul 28 |
| Cabbage | Transplant outdoors (fall) | Jul 28 – Aug 28 |
| Leaf lettuce | Sow outdoors (spring) | Feb 15 – May 3 |
| Leaf lettuce | Sow outdoors (fall) | Jul 28 – Sep 13 |
| Spinach | Sow outdoors (spring) | Feb 8 – Mar 24 |
| Spinach | Sow outdoors (fall) | Aug 14 – Sep 18 |
| Radishes | Sow outdoors (spring) | Feb 15 – Apr 7 |
| Radishes | Sow outdoors (fall) | Jul 28 – Sep 28 |
| Kale | Sow outdoors (spring) | Mar 4 – Mar 24 |
| Kale | Sow outdoors (fall) | Jul 21 – Aug 28 |
| Carrots | Sow outdoors (spring) | Mar 18 – May 3 |
| Carrots | Sow outdoors (fall) | Jun 28 – Aug 13 |
| Garlic | Plant outdoors (fall) | Oct 28 – Nov 28 |
Where these dates come from
ZIP code 71724 is matched to the NOAA station Calion L&D, AR, 6.3 km away, at 77 ft elevation (15 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Calion L&D, AR (used) | 77 ft | Mar 18 | Nov 7 |
| El Dorado S Ar Rgnl Ap, AR | 252 ft | Mar 24 | Nov 7 |
| Camden 1, AR | 116 ft | Mar 21 | Nov 6 |
| Warren 2 Wsw, AR | 210 ft | Mar 20 | Nov 11 |
Frost dates near Calion
- Norphlet, AR 71759 · last Mar 24, first Nov 7
- Lawson, AR 71750 · last Mar 18, first Nov 7
- El Dorado, AR 71730 · last Mar 24, first Nov 7
- Smackover, AR 71762 · last Mar 24, first Nov 7
- Hampton, AR 71744 · last Mar 18, first Nov 7
- Louann, AR 71751 · last Mar 21, first Nov 6
- Jersey, AR 71651 · last Mar 18, first Nov 7
- Harrell, AR 71745 · last Mar 18, first Nov 7
Frequently asked questions
- When is the last frost in Calion, AR?
- For ZIP code 71724, the average last spring frost (32°F) is March 18, based on NOAA 1991-2020 climate normals for the Calion L&D, AR weather station. There is a 1-in-10 chance of a frost after April 6.
- When is the first frost in Calion, AR?
- The average first fall frost (32°F) is November 7. There is a 1-in-10 chance of frost by October 24, so tender plants are at risk from that point on.
- How long is the growing season in 71724?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 235 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.