Frost dates for 45721Coal Run, OH
The average last spring frost in Coal Run is April 24 and the average first fall frost is October 22, giving a typical growing season of about 178 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 24
- Average first fall frost
- Oct 22
- Growing season
- 178 days
Safer after May 11 (1-in-10 risk)
Possible by Oct 9 (1-in-10 risk)
Last frost typically in 172 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 21 · May 3 · May 19 | Sep 30 · Oct 12 · Oct 24 | 158 days | 100% |
| Frost / freeze (32°F) | Apr 11 · Apr 24 · May 11 | Oct 9 · Oct 22 · Nov 2 | 178 days | 100% |
| Hard freeze (28°F) | Mar 28 · Apr 13 · Apr 28 | Oct 18 · Nov 1 · Nov 13 | 201 days | 100% |
Planting calendar for Coal Run
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 24 – May 30 |
| Tomatoes | Transplant outdoors | May 10 – Jul 2 |
| Peppers | Start seeds indoors | Mar 24 – Apr 24 |
| Peppers | Transplant outdoors | May 24 – Jun 24 |
| Eggplant | Start seeds indoors | Apr 10 – May 9 |
| Eggplant | Transplant outdoors | May 24 – Jun 24 |
| Cucumbers | Sow outdoors | May 24 – Jul 12 |
| Summer squash | Sow outdoors | May 10 – Jun 24 |
| Winter squash & pumpkins | Sow outdoors | May 24 – Jun 24 |
| Snap beans | Sow outdoors | May 10 – Aug 4 |
| Sweet corn | Sow outdoors | May 10 – Jul 2 |
| Watermelon & cantaloupe | Sow outdoors | May 24 – Jun 24 |
| Okra | Sow outdoors | May 17 – Jun 9 |
| Peas | Sow outdoors (spring) | Mar 24 – May 9 |
| Potatoes | Plant outdoors (spring) | Mar 24 – May 24 |
| Onions | Start seeds indoors (spring) | Feb 10 – Mar 9 |
| Onions | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (spring) | Mar 6 – Apr 9 |
| Broccoli | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (fall) | Jun 22 – Jul 2 |
| Broccoli | Transplant outdoors (fall) | Jul 22 – Aug 2 |
| Cabbage | Start seeds indoors (spring) | Feb 24 – Mar 24 |
| Cabbage | Transplant outdoors (spring) | Mar 24 – Apr 24 |
| Cabbage | Start seeds indoors (fall) | Jun 12 – Jul 12 |
| Cabbage | Transplant outdoors (fall) | Jul 12 – Aug 12 |
| Leaf lettuce | Sow outdoors (spring) | Mar 24 – Jun 9 |
| Leaf lettuce | Sow outdoors (fall) | Jul 12 – Aug 28 |
| Spinach | Sow outdoors (spring) | Mar 17 – Apr 30 |
| Spinach | Sow outdoors (fall) | Jul 29 – Sep 2 |
| Radishes | Sow outdoors (spring) | Mar 24 – May 14 |
| Radishes | Sow outdoors (fall) | Jul 12 – Sep 12 |
| Kale | Sow outdoors (spring) | Apr 10 – Apr 30 |
| Kale | Sow outdoors (fall) | Jul 5 – Aug 12 |
| Carrots | Sow outdoors (spring) | Apr 24 – Jun 9 |
| Carrots | Sow outdoors (fall) | Jun 12 – Jul 28 |
| Garlic | Plant outdoors (fall) | Oct 12 – Nov 12 |
Where these dates come from
ZIP code 45721 is matched to the NOAA station Beverly Stp, OH, 4.6 km away, at 624 ft elevation (22 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Beverly Stp, OH (used) | 624 ft | Apr 24 | Oct 22 |
| Caldwell 3Se, OH | 880 ft | Apr 30 | Oct 14 |
| Marietta Wwtp, OH | 610 ft | Apr 18 | Oct 27 |
| Mc Connellsville Lk 7, OH | 760 ft | Apr 27 | Oct 21 |
Frost dates near Coal Run
- Beverly, OH 45715 · last Apr 24, first Oct 22
- Lowell, OH 45744 · last Apr 24, first Oct 22
- Waterford, OH 45786 · last Apr 24, first Oct 22
- Watertown, OH 45787 · last Apr 24, first Oct 22
- Macksburg, OH 45746 · last Apr 24, first Oct 22
- Dexter City, OH 45727 · last Apr 24, first Oct 22
- Lower Salem, OH 45745 · last Apr 18, first Oct 27
- Fleming, OH 45729 · last Apr 23, first Oct 22
Frequently asked questions
- When is the last frost in Coal Run, OH?
- For ZIP code 45721, the average last spring frost (32°F) is April 24, based on NOAA 1991-2020 climate normals for the Beverly Stp, OH weather station. There is a 1-in-10 chance of a frost after May 11.
- When is the first frost in Coal Run, OH?
- The average first fall frost (32°F) is October 22. There is a 1-in-10 chance of frost by October 9, so tender plants are at risk from that point on.
- How long is the growing season in 45721?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 178 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.