Frost dates for 65666Hardenville, MO
The average last spring frost in Hardenville is April 9 and the average first fall frost is October 23, giving a typical growing season of about 196 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 9
- Average first fall frost
- Oct 23
- Growing season
- 196 days
Safer after Apr 28 (1-in-10 risk)
Possible by Oct 8 (1-in-10 risk)
Last frost typically in 165 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) | Apr 8 · Apr 25 · May 10 | Oct 1 · Oct 14 · Oct 27 | 173 days | 100% |
| Frost / freeze (32°F) | Mar 24 · Apr 9 · Apr 28 | Oct 8 · Oct 23 · Nov 5 | 196 days | 100% |
| Hard freeze (28°F) | Mar 11 · Mar 29 · Apr 14 | Oct 18 · Nov 2 · Nov 20 | 219 days | 100% |
Planting calendar for Hardenville
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 9 – May 15 |
| Tomatoes | Transplant outdoors | Apr 25 – Jul 3 |
| Peppers | Start seeds indoors | Mar 9 – Apr 9 |
| Peppers | Transplant outdoors | May 9 – Jun 9 |
| Eggplant | Start seeds indoors | Mar 26 – Apr 24 |
| Eggplant | Transplant outdoors | May 9 – Jun 9 |
| Cucumbers | Sow outdoors | May 9 – Jul 13 |
| Summer squash | Sow outdoors | Apr 25 – Jun 9 |
| Winter squash & pumpkins | Sow outdoors | May 9 – Jun 9 |
| Snap beans | Sow outdoors | Apr 25 – Aug 5 |
| Sweet corn | Sow outdoors | Apr 25 – Jul 3 |
| Watermelon & cantaloupe | Sow outdoors | May 9 – Jun 9 |
| Okra | Sow outdoors | May 2 – May 25 |
| Peas | Sow outdoors (spring) | Mar 9 – Apr 24 |
| Potatoes | Plant outdoors (spring) | Mar 9 – May 9 |
| Onions | Start seeds indoors (spring) | Jan 26 – Feb 22 |
| Onions | Transplant outdoors (spring) | Mar 26 – Apr 24 |
| Broccoli | Start seeds indoors (spring) | Feb 19 – Mar 25 |
| Broccoli | Transplant outdoors (spring) | Mar 26 – Apr 24 |
| Broccoli | Start seeds indoors (fall) | Jun 23 – Jul 3 |
| Broccoli | Transplant outdoors (fall) | Jul 23 – Aug 3 |
| Cabbage | Start seeds indoors (spring) | Feb 9 – Mar 9 |
| Cabbage | Transplant outdoors (spring) | Mar 9 – Apr 9 |
| Cabbage | Start seeds indoors (fall) | Jun 13 – Jul 13 |
| Cabbage | Transplant outdoors (fall) | Jul 13 – Aug 13 |
| Leaf lettuce | Sow outdoors (spring) | Mar 9 – May 25 |
| Leaf lettuce | Sow outdoors (fall) | Jul 13 – Aug 29 |
| Spinach | Sow outdoors (spring) | Mar 2 – Apr 15 |
| Spinach | Sow outdoors (fall) | Jul 30 – Sep 3 |
| Radishes | Sow outdoors (spring) | Mar 9 – Apr 29 |
| Radishes | Sow outdoors (fall) | Jul 13 – Sep 13 |
| Kale | Sow outdoors (spring) | Mar 26 – Apr 15 |
| Kale | Sow outdoors (fall) | Jul 6 – Aug 13 |
| Carrots | Sow outdoors (spring) | Apr 9 – May 25 |
| Carrots | Sow outdoors (fall) | Jun 13 – Jul 29 |
| Garlic | Plant outdoors (fall) | Oct 13 – Nov 13 |
Where these dates come from
ZIP code 65666 is matched to the NOAA station Dora 3Se, MO, 22.2 km away, at 966 ft elevation (1 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Dora 3Se, MO (used) | 966 ft | Apr 9 | Oct 23 |
| Mountain Home Baxter Ap, AR | 928 ft | Apr 2 | Nov 1 |
| Mtn Home 1 Nnw, AR | 800 ft | Mar 31 | Nov 1 |
| Gentryville, MO | 1,100 ft | Apr 14 | Oct 25 |
Frost dates near Hardenville
- Gainesville, MO 65655 · last Apr 2, first Nov 1
- Tecumseh, MO 65760 · last Apr 9, first Oct 23
- Udall, MO 65766 · last Mar 31, first Nov 1
- Zanoni, MO 65784 · last Apr 9, first Oct 23
- Clarkridge, AR 72623 · last Mar 31, first Nov 1
- Gamaliel, AR 72537 · last Mar 31, first Nov 1
- Brixey, MO 65618 · last Apr 9, first Oct 23
- Bakersfield, MO 65609 · last Mar 31, first Nov 1
Frequently asked questions
- When is the last frost in Hardenville, MO?
- For ZIP code 65666, the average last spring frost (32°F) is April 9, based on NOAA 1991-2020 climate normals for the Dora 3Se, MO weather station. There is a 1-in-10 chance of a frost after April 28.
- When is the first frost in Hardenville, MO?
- The average first fall frost (32°F) is October 23. There is a 1-in-10 chance of frost by October 8, so tender plants are at risk from that point on.
- How long is the growing season in 65666?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 196 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.