Frost dates for 45740Jacksonville, OH
The average last spring frost in Jacksonville is April 25 and the average first fall frost is October 23, giving a typical growing season of about 179 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 25
- Average first fall frost
- Oct 23
- Growing season
- 179 days
Safer after May 12 (1-in-10 risk)
Possible by Oct 8 (1-in-10 risk)
Last frost typically in 175 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 20 · May 5 · May 21 | Sep 26 · Oct 11 · Oct 24 | 158 days | 100% |
| Frost / freeze (32°F) | Apr 11 · Apr 25 · May 12 | Oct 8 · Oct 23 · Nov 3 | 179 days | 100% |
| Hard freeze (28°F) | Mar 28 · Apr 11 · Apr 30 | Oct 18 · Nov 1 · Nov 13 | 202 days | 100% |
Planting calendar for Jacksonville
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 25 – May 31 |
| Tomatoes | Transplant outdoors | May 11 – Jul 3 |
| Peppers | Start seeds indoors | Mar 25 – Apr 25 |
| Peppers | Transplant outdoors | May 25 – Jun 25 |
| Eggplant | Start seeds indoors | Apr 11 – May 10 |
| Eggplant | Transplant outdoors | May 25 – Jun 25 |
| Cucumbers | Sow outdoors | May 25 – Jul 13 |
| Summer squash | Sow outdoors | May 11 – Jun 25 |
| Winter squash & pumpkins | Sow outdoors | May 25 – Jun 25 |
| Snap beans | Sow outdoors | May 11 – Aug 5 |
| Sweet corn | Sow outdoors | May 11 – Jul 3 |
| Watermelon & cantaloupe | Sow outdoors | May 25 – Jun 25 |
| Okra | Sow outdoors | May 18 – Jun 10 |
| Peas | Sow outdoors (spring) | Mar 25 – May 10 |
| Potatoes | Plant outdoors (spring) | Mar 25 – May 25 |
| Onions | Start seeds indoors (spring) | Feb 11 – Mar 10 |
| Onions | Transplant outdoors (spring) | Apr 11 – May 10 |
| Broccoli | Start seeds indoors (spring) | Mar 7 – Apr 10 |
| Broccoli | Transplant outdoors (spring) | Apr 11 – May 10 |
| Broccoli | Start seeds indoors (fall) | Jun 23 – Jul 3 |
| Broccoli | Transplant outdoors (fall) | Jul 23 – Aug 3 |
| Cabbage | Start seeds indoors (spring) | Feb 25 – Mar 25 |
| Cabbage | Transplant outdoors (spring) | Mar 25 – Apr 25 |
| Cabbage | Start seeds indoors (fall) | Jun 13 – Jul 13 |
| Cabbage | Transplant outdoors (fall) | Jul 13 – Aug 13 |
| Leaf lettuce | Sow outdoors (spring) | Mar 25 – Jun 10 |
| Leaf lettuce | Sow outdoors (fall) | Jul 13 – Aug 29 |
| Spinach | Sow outdoors (spring) | Mar 18 – May 1 |
| Spinach | Sow outdoors (fall) | Jul 30 – Sep 3 |
| Radishes | Sow outdoors (spring) | Mar 25 – May 15 |
| Radishes | Sow outdoors (fall) | Jul 13 – Sep 13 |
| Kale | Sow outdoors (spring) | Apr 11 – May 1 |
| Kale | Sow outdoors (fall) | Jul 6 – Aug 13 |
| Carrots | Sow outdoors (spring) | Apr 25 – Jun 10 |
| Carrots | Sow outdoors (fall) | Jun 13 – Jul 29 |
| Garlic | Plant outdoors (fall) | Oct 13 – Nov 13 |
Where these dates come from
ZIP code 45740 is matched to the NOAA station Athens Ou, OH, 17.3 km away, at 684 ft elevation (64 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Athens Ou, OH (used) | 684 ft | Apr 25 | Oct 23 |
| Mc Connellsville Lk 7, OH | 760 ft | Apr 27 | Oct 21 |
| Logan, OH | 722 ft | Apr 30 | Oct 14 |
| New Lexington 2 Nw, OH | 877 ft | Apr 30 | Oct 17 |
Frost dates near Jacksonville
- Trimble, OH 45782 · last Apr 25, first Oct 23
- Glouster, OH 45732 · last Apr 25, first Oct 23
- Millfield, OH 45761 · last Apr 25, first Oct 23
- Murray City, OH 43144 · last Apr 30, first Oct 17
- Buchtel, OH 45716 · last Apr 25, first Oct 23
- Chauncey, OH 45719 · last Apr 25, first Oct 23
- Amesville, OH 45711 · last Apr 25, first Oct 23
- The Plains, OH 45780 · last Apr 25, first Oct 23
Frequently asked questions
- When is the last frost in Jacksonville, OH?
- For ZIP code 45740, the average last spring frost (32°F) is April 25, based on NOAA 1991-2020 climate normals for the Athens Ou, OH weather station. There is a 1-in-10 chance of a frost after May 12.
- When is the first frost in Jacksonville, OH?
- The average first fall frost (32°F) is October 23. There is a 1-in-10 chance of frost by October 8, so tender plants are at risk from that point on.
- How long is the growing season in 45740?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 179 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.