Frost dates for 67057Hardtner, KS
The average last spring frost in Hardtner is April 13 and the average first fall frost is October 23, giving a typical growing season of about 191 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 13
- Average first fall frost
- Oct 23
- Growing season
- 191 days
Safer after Apr 29 (1-in-10 risk)
Possible by Oct 10 (1-in-10 risk)
Last frost typically in 161 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 10 · Apr 24 · May 7 | Oct 1 · Oct 15 · Oct 26 | 174 days | 100% |
| Frost / freeze (32°F) | Mar 31 · Apr 13 · Apr 29 | Oct 10 · Oct 23 · Nov 4 | 191 days | 100% |
| Hard freeze (28°F) | Mar 16 · Apr 2 · Apr 18 | Oct 18 · Oct 31 · Nov 15 | 211 days | 100% |
Planting calendar for Hardtner
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 13 – May 19 |
| Tomatoes | Transplant outdoors | Apr 29 – Jul 3 |
| Peppers | Start seeds indoors | Mar 13 – Apr 13 |
| Peppers | Transplant outdoors | May 13 – Jun 13 |
| Eggplant | Start seeds indoors | Mar 30 – Apr 28 |
| Eggplant | Transplant outdoors | May 13 – Jun 13 |
| Cucumbers | Sow outdoors | May 13 – Jul 13 |
| Summer squash | Sow outdoors | Apr 29 – Jun 13 |
| Winter squash & pumpkins | Sow outdoors | May 13 – Jun 13 |
| Snap beans | Sow outdoors | Apr 29 – Aug 5 |
| Sweet corn | Sow outdoors | Apr 29 – Jul 3 |
| Watermelon & cantaloupe | Sow outdoors | May 13 – Jun 13 |
| Okra | Sow outdoors | May 6 – May 29 |
| Peas | Sow outdoors (spring) | Mar 13 – Apr 28 |
| Potatoes | Plant outdoors (spring) | Mar 13 – May 13 |
| Onions | Start seeds indoors (spring) | Jan 30 – Feb 26 |
| Onions | Transplant outdoors (spring) | Mar 30 – Apr 28 |
| Broccoli | Start seeds indoors (spring) | Feb 23 – Mar 29 |
| Broccoli | Transplant outdoors (spring) | Mar 30 – Apr 28 |
| Broccoli | Start seeds indoors (fall) | Jun 23 – Jul 3 |
| Broccoli | Transplant outdoors (fall) | Jul 23 – Aug 3 |
| Cabbage | Start seeds indoors (spring) | Feb 13 – Mar 13 |
| Cabbage | Transplant outdoors (spring) | Mar 13 – Apr 13 |
| Cabbage | Start seeds indoors (fall) | Jun 13 – Jul 13 |
| Cabbage | Transplant outdoors (fall) | Jul 13 – Aug 13 |
| Leaf lettuce | Sow outdoors (spring) | Mar 13 – May 29 |
| Leaf lettuce | Sow outdoors (fall) | Jul 13 – Aug 29 |
| Spinach | Sow outdoors (spring) | Mar 6 – Apr 19 |
| Spinach | Sow outdoors (fall) | Jul 30 – Sep 3 |
| Radishes | Sow outdoors (spring) | Mar 13 – May 3 |
| Radishes | Sow outdoors (fall) | Jul 13 – Sep 13 |
| Kale | Sow outdoors (spring) | Mar 30 – Apr 19 |
| Kale | Sow outdoors (fall) | Jul 6 – Aug 13 |
| Carrots | Sow outdoors (spring) | Apr 13 – May 29 |
| Carrots | Sow outdoors (fall) | Jun 13 – Jul 29 |
| Garlic | Plant outdoors (fall) | Oct 13 – Nov 13 |
Where these dates come from
ZIP code 67057 is matched to the NOAA station Medicine Lodge, KS, 29.6 km away, at 1,535 ft elevation (55 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Medicine Lodge, KS (used) | 1,535 ft | Apr 13 | Oct 23 |
| Kiowa, KS | 1,325 ft | Apr 8 | Oct 31 |
| Alva 1W, OK | 1,464 ft | Apr 10 | Oct 28 |
| Freedom 16Nne Mesonet, OK | 1,820 ft | Apr 8 | Oct 29 |
Frost dates near Hardtner
- Kiowa, KS 67070 · last Apr 8, first Oct 31
- Hazelton, KS 67061 · last Apr 8, first Oct 31
- Burlington, OK 73722 · last Apr 15, first Oct 29
- Alva, OK 73717 · last Apr 10, first Oct 28
- Medicine Lodge, KS 67104 · last Apr 13, first Oct 23
- Sharon, KS 67138 · last Apr 13, first Oct 23
- Amorita, OK 73719 · last Apr 5, first Nov 1
- Hopeton, OK 73746 · last Apr 11, first Oct 26
Frequently asked questions
- When is the last frost in Hardtner, KS?
- For ZIP code 67057, the average last spring frost (32°F) is April 13, based on NOAA 1991-2020 climate normals for the Medicine Lodge, KS weather station. There is a 1-in-10 chance of a frost after April 29.
- When is the first frost in Hardtner, KS?
- The average first fall frost (32°F) is October 23. There is a 1-in-10 chance of frost by October 10, so tender plants are at risk from that point on.
- How long is the growing season in 67057?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 191 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.