Frost dates for 65479Hartshorn, MO
The average last spring frost in Hartshorn is April 7 and the average first fall frost is October 27, giving a typical growing season of about 201 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 7
- Average first fall frost
- Oct 27
- Growing season
- 201 days
Safer after Apr 27 (1-in-10 risk)
Possible by Oct 13 (1-in-10 risk)
First frost typically in 0 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 3 · Apr 21 · May 8 | Oct 1 · Oct 16 · Oct 29 | 177 days | 100% |
| Frost / freeze (32°F) | Mar 22 · Apr 7 · Apr 27 | Oct 13 · Oct 27 · Nov 10 | 201 days | 100% |
| Hard freeze (28°F) | Mar 9 · Mar 28 · Apr 13 | Oct 25 · Nov 6 · Nov 24 | 224 days | 100% |
Planting calendar for Hartshorn
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 7 – May 13 |
| Tomatoes | Transplant outdoors | Apr 23 – Jul 7 |
| Peppers | Start seeds indoors | Mar 7 – Apr 7 |
| Peppers | Transplant outdoors | May 7 – Jun 7 |
| Eggplant | Start seeds indoors | Mar 24 – Apr 22 |
| Eggplant | Transplant outdoors | May 7 – Jun 7 |
| Cucumbers | Sow outdoors | May 7 – Jul 17 |
| Summer squash | Sow outdoors | Apr 23 – Jun 7 |
| Winter squash & pumpkins | Sow outdoors | May 7 – Jun 7 |
| Snap beans | Sow outdoors | Apr 23 – Aug 9 |
| Sweet corn | Sow outdoors | Apr 23 – Jul 7 |
| Watermelon & cantaloupe | Sow outdoors | May 7 – Jun 7 |
| Okra | Sow outdoors | Apr 30 – May 23 |
| Peas | Sow outdoors (spring) | Mar 7 – Apr 22 |
| Potatoes | Plant outdoors (spring) | Mar 7 – May 7 |
| Onions | Start seeds indoors (spring) | Jan 24 – Feb 20 |
| Onions | Transplant outdoors (spring) | Mar 24 – Apr 22 |
| Broccoli | Start seeds indoors (spring) | Feb 17 – Mar 23 |
| Broccoli | Transplant outdoors (spring) | Mar 24 – Apr 22 |
| Broccoli | Start seeds indoors (fall) | Jun 27 – Jul 7 |
| Broccoli | Transplant outdoors (fall) | Jul 27 – Aug 7 |
| Cabbage | Start seeds indoors (spring) | Feb 7 – Mar 7 |
| Cabbage | Transplant outdoors (spring) | Mar 7 – Apr 7 |
| Cabbage | Start seeds indoors (fall) | Jun 17 – Jul 17 |
| Cabbage | Transplant outdoors (fall) | Jul 17 – Aug 17 |
| Leaf lettuce | Sow outdoors (spring) | Mar 7 – May 23 |
| Leaf lettuce | Sow outdoors (fall) | Jul 17 – Sep 2 |
| Spinach | Sow outdoors (spring) | Feb 28 – Apr 13 |
| Spinach | Sow outdoors (fall) | Aug 3 – Sep 7 |
| Radishes | Sow outdoors (spring) | Mar 7 – Apr 27 |
| Radishes | Sow outdoors (fall) | Jul 17 – Sep 17 |
| Kale | Sow outdoors (spring) | Mar 24 – Apr 13 |
| Kale | Sow outdoors (fall) | Jul 10 – Aug 17 |
| Carrots | Sow outdoors (spring) | Apr 7 – May 23 |
| Carrots | Sow outdoors (fall) | Jun 17 – Aug 2 |
| Garlic | Plant outdoors (fall) | Oct 17 – Nov 17 |
Where these dates come from
ZIP code 65479 is matched to the NOAA station Summersville 3 Se, MO, 16.8 km away, at 1,236 ft elevation (25 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Summersville 3 Se, MO (used) | 1,236 ft | Apr 7 | Oct 27 |
| Round Spring 2Sw, MO | 829 ft | Apr 24 | Oct 16 |
| Houston, MO | 1,224 ft | Apr 10 | Oct 23 |
| Eminence 1 N, MO | 640 ft | Apr 18 | Oct 19 |
Frost dates near Hartshorn
- Eunice, MO 65468 · last Apr 10, first Oct 23
- Yukon, MO 65589 · last Apr 10, first Oct 23
- Raymondville, MO 65555 · last Apr 10, first Oct 23
- Summersville, MO 65571 · last Apr 7, first Oct 27
- Elk Creek, MO 65464 · last Apr 10, first Oct 23
- Houston, MO 65483 · last Apr 10, first Oct 23
- Eminence, MO 65466 · last Apr 24, first Oct 16
- Jadwin, MO 65501 · last Apr 17, first Oct 18
Frequently asked questions
- When is the last frost in Hartshorn, MO?
- For ZIP code 65479, the average last spring frost (32°F) is April 7, based on NOAA 1991-2020 climate normals for the Summersville 3 Se, MO weather station. There is a 1-in-10 chance of a frost after April 27.
- When is the first frost in Hartshorn, MO?
- The average first fall frost (32°F) is October 27. There is a 1-in-10 chance of frost by October 13, so tender plants are at risk from that point on.
- How long is the growing season in 65479?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 201 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.