Frost dates for 43517Edgerton, OH
The average last spring frost in Edgerton is April 28 and the average first fall frost is October 18, giving a typical growing season of about 173 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 28
- Average first fall frost
- Oct 18
- Growing season
- 173 days
Safer after May 12 (1-in-10 risk)
Possible by Oct 4 (1-in-10 risk)
Last frost typically in 176 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 23 · May 7 · May 23 | Sep 24 · Oct 6 · Oct 20 | 152 days | 100% |
| Frost / freeze (32°F) | Apr 15 · Apr 28 · May 12 | Oct 4 · Oct 18 · Nov 1 | 173 days | 100% |
| Hard freeze (28°F) | Apr 2 · Apr 17 · May 3 | Oct 16 · Oct 31 · Nov 13 | 196 days | 100% |
Planting calendar for Edgerton
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 28 – Jun 3 |
| Tomatoes | Transplant outdoors | May 14 – Jun 28 |
| Peppers | Start seeds indoors | Mar 28 – Apr 28 |
| Peppers | Transplant outdoors | May 28 – Jun 28 |
| Eggplant | Start seeds indoors | Apr 14 – May 13 |
| Eggplant | Transplant outdoors | May 28 – Jun 28 |
| Cucumbers | Sow outdoors | May 28 – Jul 8 |
| Summer squash | Sow outdoors | May 14 – Jun 28 |
| Winter squash & pumpkins | Sow outdoors | May 28 – Jun 28 |
| Snap beans | Sow outdoors | May 14 – Jul 31 |
| Sweet corn | Sow outdoors | May 14 – Jun 28 |
| Watermelon & cantaloupe | Sow outdoors | May 28 – Jun 28 |
| Okra | Sow outdoors | May 21 – Jun 13 |
| Peas | Sow outdoors (spring) | Mar 28 – May 13 |
| Potatoes | Plant outdoors (spring) | Mar 28 – May 28 |
| Onions | Start seeds indoors (spring) | Feb 14 – Mar 13 |
| Onions | Transplant outdoors (spring) | Apr 14 – May 13 |
| Broccoli | Start seeds indoors (spring) | Mar 10 – Apr 13 |
| Broccoli | Transplant outdoors (spring) | Apr 14 – May 13 |
| Broccoli | Start seeds indoors (fall) | Jun 18 – Jun 28 |
| Broccoli | Transplant outdoors (fall) | Jul 18 – Jul 29 |
| Cabbage | Start seeds indoors (spring) | Feb 28 – Mar 28 |
| Cabbage | Transplant outdoors (spring) | Mar 28 – Apr 28 |
| Cabbage | Start seeds indoors (fall) | Jun 8 – Jul 8 |
| Cabbage | Transplant outdoors (fall) | Jul 8 – Aug 8 |
| Leaf lettuce | Sow outdoors (spring) | Mar 28 – Jun 13 |
| Leaf lettuce | Sow outdoors (fall) | Jul 8 – Aug 24 |
| Spinach | Sow outdoors (spring) | Mar 21 – May 4 |
| Spinach | Sow outdoors (fall) | Jul 25 – Aug 29 |
| Radishes | Sow outdoors (spring) | Mar 28 – May 18 |
| Radishes | Sow outdoors (fall) | Jul 8 – Sep 8 |
| Kale | Sow outdoors (spring) | Apr 14 – May 4 |
| Kale | Sow outdoors (fall) | Jul 1 – Aug 8 |
| Carrots | Sow outdoors (spring) | Apr 28 – Jun 13 |
| Carrots | Sow outdoors (fall) | Jun 8 – Jul 24 |
| Garlic | Plant outdoors (fall) | Oct 8 – Nov 8 |
Where these dates come from
ZIP code 43517 is matched to the NOAA station Montpelier, OH, 18.5 km away, at 860 ft elevation (17 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Montpelier, OH (used) | 860 ft | Apr 28 | Oct 18 |
| Hicksville, OH | 750 ft | Apr 28 | Oct 17 |
| Bryan 2 Se, OH | 730 ft | Apr 26 | Oct 17 |
| Defiance Mem Ap, OH | 708 ft | Apr 28 | Oct 17 |
Frost dates near Edgerton
- Blakeslee, OH 43505 · last Apr 28, first Oct 18
- Farmer, OH 43520 · last Apr 26, first Oct 17
- Butler, IN 46721 · last May 2, first Oct 10
- Bryan, OH 43506 · last Apr 26, first Oct 17
- Hicksville, OH 43526 · last Apr 28, first Oct 17
- Edon, OH 43518 · last Apr 28, first Oct 18
- Hamilton, IN 46742 · last Apr 30, first Oct 16
- Ney, OH 43549 · last Apr 28, first Oct 17
Frequently asked questions
- When is the last frost in Edgerton, OH?
- For ZIP code 43517, the average last spring frost (32°F) is April 28, based on NOAA 1991-2020 climate normals for the Montpelier, OH weather station. There is a 1-in-10 chance of a frost after May 12.
- When is the first frost in Edgerton, OH?
- The average first fall frost (32°F) is October 18. There is a 1-in-10 chance of frost by October 4, so tender plants are at risk from that point on.
- How long is the growing season in 43517?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 173 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.