Frost dates for 25139Mount Carbon, WV
The average last spring frost in Mount Carbon is April 7 and the average first fall frost is November 4, giving a typical growing season of about 209 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 7
- Average first fall frost
- Nov 4
- Growing season
- 209 days
Safer after Apr 23 (1-in-10 risk)
Possible by Oct 24 (1-in-10 risk)
First frost typically in 1 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 22 · May 8 | Oct 13 · Oct 27 · Nov 7 | 185 days | 100% |
| Frost / freeze (32°F) | Mar 26 · Apr 7 · Apr 23 | Oct 24 · Nov 4 · Nov 16 | 209 days | 100% |
| Hard freeze (28°F) | Mar 9 · Mar 27 · Apr 9 | Nov 1 · Nov 14 · Dec 1 | 232 days | 100% |
Planting calendar for Mount Carbon
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 15 |
| 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 25 |
| Summer squash | Sow outdoors | Apr 23 – Jun 7 |
| Winter squash & pumpkins | Sow outdoors | May 7 – Jun 7 |
| Snap beans | Sow outdoors | Apr 23 – Aug 17 |
| Sweet corn | Sow outdoors | Apr 23 – Jul 15 |
| 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) | Jul 5 – Jul 15 |
| Broccoli | Transplant outdoors (fall) | Aug 4 – Aug 15 |
| Cabbage | Start seeds indoors (spring) | Feb 7 – Mar 7 |
| Cabbage | Transplant outdoors (spring) | Mar 7 – Apr 7 |
| Cabbage | Start seeds indoors (fall) | Jun 25 – Jul 25 |
| Cabbage | Transplant outdoors (fall) | Jul 25 – Aug 25 |
| Leaf lettuce | Sow outdoors (spring) | Mar 7 – May 23 |
| Leaf lettuce | Sow outdoors (fall) | Jul 25 – Sep 10 |
| Spinach | Sow outdoors (spring) | Feb 28 – Apr 13 |
| Spinach | Sow outdoors (fall) | Aug 11 – Sep 15 |
| Radishes | Sow outdoors (spring) | Mar 7 – Apr 27 |
| Radishes | Sow outdoors (fall) | Jul 25 – Sep 25 |
| Kale | Sow outdoors (spring) | Mar 24 – Apr 13 |
| Kale | Sow outdoors (fall) | Jul 18 – Aug 25 |
| Carrots | Sow outdoors (spring) | Apr 7 – May 23 |
| Carrots | Sow outdoors (fall) | Jun 25 – Aug 10 |
| Garlic | Plant outdoors (fall) | Oct 25 – Nov 25 |
Where these dates come from
ZIP code 25139 is matched to the NOAA station London Locks, WV, 9 km away, at 632 ft elevation (287 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| London Locks, WV (used) | 632 ft | Apr 7 | Nov 4 |
| Anstead Hawks Nest Sp, WV | 1,296 ft | Apr 22 | Oct 22 |
| Oak Hill, WV | 2,040 ft | Apr 21 | Oct 19 |
| Summersville Lake, WV | 1,768 ft | Apr 27 | Oct 19 |
Frost dates near Mount Carbon
- Alloy, WV 25002 · last Apr 7, first Nov 4
- Boomer, WV 25031 · last Apr 22, first Oct 22
- Deep Water, WV 25057 · last Apr 7, first Nov 4
- Kimberly, WV 25118 · last Apr 21, first Oct 19
- Montgomery, WV 25136 · last Apr 22, first Oct 22
- Smithers, WV 25186 · last Apr 7, first Nov 4
- Powellton, WV 25161 · last Apr 7, first Nov 4
- Charlton Heights, WV 25040 · last Apr 7, first Nov 4
Frequently asked questions
- When is the last frost in Mount Carbon, WV?
- For ZIP code 25139, the average last spring frost (32°F) is April 7, based on NOAA 1991-2020 climate normals for the London Locks, WV weather station. There is a 1-in-10 chance of a frost after April 23.
- When is the first frost in Mount Carbon, WV?
- The average first fall frost (32°F) is November 4. 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 25139?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 209 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.