Frost dates for 42223Fort Campbell, KY
The average last spring frost in Fort Campbell is April 6 and the average first fall frost is October 28, giving a typical growing season of about 204 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 6
- Average first fall frost
- Oct 28
- Growing season
- 204 days
Safer after Apr 23 (1-in-10 risk)
Possible by Oct 15 (1-in-10 risk)
Last frost typically in 154 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 18 · May 4 | Oct 7 · Oct 19 · Oct 31 | 183 days | 100% |
| Frost / freeze (32°F) | Mar 20 · Apr 6 · Apr 23 | Oct 15 · Oct 28 · Nov 9 | 204 days | 100% |
| Hard freeze (28°F) | Mar 7 · Mar 25 · Apr 11 | Oct 26 · Nov 7 · Nov 24 | 227 days | 100% |
Planting calendar for Fort Campbell
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 6 – May 12 |
| Tomatoes | Transplant outdoors | Apr 22 – Jul 8 |
| Peppers | Start seeds indoors | Mar 6 – Apr 6 |
| Peppers | Transplant outdoors | May 6 – Jun 6 |
| Eggplant | Start seeds indoors | Mar 23 – Apr 21 |
| Eggplant | Transplant outdoors | May 6 – Jun 6 |
| Cucumbers | Sow outdoors | May 6 – Jul 18 |
| Summer squash | Sow outdoors | Apr 22 – Jun 6 |
| Winter squash & pumpkins | Sow outdoors | May 6 – Jun 6 |
| Snap beans | Sow outdoors | Apr 22 – Aug 10 |
| Sweet corn | Sow outdoors | Apr 22 – Jul 8 |
| Watermelon & cantaloupe | Sow outdoors | May 6 – Jun 6 |
| Okra | Sow outdoors | Apr 29 – May 22 |
| Peas | Sow outdoors (spring) | Mar 6 – Apr 21 |
| Potatoes | Plant outdoors (spring) | Mar 6 – May 6 |
| Onions | Start seeds indoors (spring) | Jan 23 – Feb 19 |
| Onions | Transplant outdoors (spring) | Mar 23 – Apr 21 |
| Broccoli | Start seeds indoors (spring) | Feb 16 – Mar 22 |
| Broccoli | Transplant outdoors (spring) | Mar 23 – Apr 21 |
| Broccoli | Start seeds indoors (fall) | Jun 28 – Jul 8 |
| Broccoli | Transplant outdoors (fall) | Jul 28 – Aug 8 |
| Cabbage | Start seeds indoors (spring) | Feb 6 – Mar 6 |
| Cabbage | Transplant outdoors (spring) | Mar 6 – Apr 6 |
| Cabbage | Start seeds indoors (fall) | Jun 18 – Jul 18 |
| Cabbage | Transplant outdoors (fall) | Jul 18 – Aug 18 |
| Leaf lettuce | Sow outdoors (spring) | Mar 6 – May 22 |
| Leaf lettuce | Sow outdoors (fall) | Jul 18 – Sep 3 |
| Spinach | Sow outdoors (spring) | Feb 27 – Apr 12 |
| Spinach | Sow outdoors (fall) | Aug 4 – Sep 8 |
| Radishes | Sow outdoors (spring) | Mar 6 – Apr 26 |
| Radishes | Sow outdoors (fall) | Jul 18 – Sep 18 |
| Kale | Sow outdoors (spring) | Mar 23 – Apr 12 |
| Kale | Sow outdoors (fall) | Jul 11 – Aug 18 |
| Carrots | Sow outdoors (spring) | Apr 6 – May 22 |
| Carrots | Sow outdoors (fall) | Jun 18 – Aug 3 |
| Garlic | Plant outdoors (fall) | Oct 18 – Nov 18 |
Where these dates come from
ZIP code 42223 is matched to the NOAA station Clarksville Outlaw Ap, TN, 5 km away, at 560 ft elevation (6 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Clarksville Outlaw Ap, TN (used) | 560 ft | Apr 6 | Oct 28 |
| Clarksville Wwtp, TN | 402 ft | Apr 3 | Nov 1 |
| Clarksville No.2, TN | 496 ft | Apr 10 | Oct 30 |
| Hopkinsville, KY | 520 ft | Apr 4 | Nov 2 |
Frost dates near Fort Campbell
- Oak Grove, KY 42262 · last Apr 6, first Oct 28
- Clarksville, TN 37042 · last Apr 6, first Oct 28
- Herndon, KY 42236 · last Apr 4, first Nov 2
- Pembroke, KY 42266 · last Apr 6, first Oct 28
- Woodlawn, TN 37191 · last Apr 6, first Oct 28
- La Fayette, KY 42254 · last Apr 6, first Oct 28
- Trenton, KY 42286 · last Apr 6, first Oct 28
- Hopkinsville, KY 42240 · last Apr 4, first Nov 2
Frequently asked questions
- When is the last frost in Fort Campbell, KY?
- For ZIP code 42223, the average last spring frost (32°F) is April 6, based on NOAA 1991-2020 climate normals for the Clarksville Outlaw Ap, TN weather station. There is a 1-in-10 chance of a frost after April 23.
- When is the first frost in Fort Campbell, KY?
- The average first fall frost (32°F) is October 28. There is a 1-in-10 chance of frost by October 15, so tender plants are at risk from that point on.
- How long is the growing season in 42223?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 204 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.