Frost dates for 43356Waldo, OH
The average last spring frost in Waldo is April 25 and the average first fall frost is October 20, giving a typical growing season of about 178 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 25
- Average first fall frost
- Oct 20
- Growing season
- 178 days
Safer after May 11 (1-in-10 risk)
Possible by Oct 5 (1-in-10 risk)
Last frost typically in 173 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 5 · May 21 | Sep 24 · Oct 8 · Oct 21 | 157 days | 100% |
| Frost / freeze (32°F) | Apr 11 · Apr 25 · May 11 | Oct 5 · Oct 20 · Nov 2 | 178 days | 100% |
| Hard freeze (28°F) | Mar 30 · Apr 14 · May 3 | Oct 18 · Nov 1 · Nov 14 | 200 days | 100% |
Planting calendar for Waldo
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 – Jun 30 |
| 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 10 |
| Summer squash | Sow outdoors | May 11 – Jun 25 |
| Winter squash & pumpkins | Sow outdoors | May 25 – Jun 25 |
| Snap beans | Sow outdoors | May 11 – Aug 2 |
| Sweet corn | Sow outdoors | May 11 – Jun 30 |
| 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 20 – Jun 30 |
| Broccoli | Transplant outdoors (fall) | Jul 20 – Jul 31 |
| Cabbage | Start seeds indoors (spring) | Feb 25 – Mar 25 |
| Cabbage | Transplant outdoors (spring) | Mar 25 – Apr 25 |
| Cabbage | Start seeds indoors (fall) | Jun 10 – Jul 10 |
| Cabbage | Transplant outdoors (fall) | Jul 10 – Aug 10 |
| Leaf lettuce | Sow outdoors (spring) | Mar 25 – Jun 10 |
| Leaf lettuce | Sow outdoors (fall) | Jul 10 – Aug 26 |
| Spinach | Sow outdoors (spring) | Mar 18 – May 1 |
| Spinach | Sow outdoors (fall) | Jul 27 – Aug 31 |
| Radishes | Sow outdoors (spring) | Mar 25 – May 15 |
| Radishes | Sow outdoors (fall) | Jul 10 – Sep 10 |
| Kale | Sow outdoors (spring) | Apr 11 – May 1 |
| Kale | Sow outdoors (fall) | Jul 3 – Aug 10 |
| Carrots | Sow outdoors (spring) | Apr 25 – Jun 10 |
| Carrots | Sow outdoors (fall) | Jun 10 – Jul 26 |
| Garlic | Plant outdoors (fall) | Oct 10 – Nov 10 |
Where these dates come from
ZIP code 43356 is matched to the NOAA station Marion 2 N, OH, 18.2 km away, at 965 ft elevation (13 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Marion 2 N, OH (used) | 965 ft | Apr 25 | Oct 20 |
| Marion Muni Ap, OH | 994 ft | Apr 24 | Oct 20 |
| Marysville, OH | 970 ft | Apr 19 | Oct 26 |
| Galion Wtr Wks, OH | 1,170 ft | Apr 26 | Oct 20 |
Frost dates near Waldo
- Prospect, OH 43342 · last Apr 25, first Oct 20
- Ashley, OH 43003 · last Apr 24, first Oct 20
- Radnor, OH 43066 · last Apr 19, first Oct 26
- Cardington, OH 43315 · last Apr 24, first Oct 20
- Green Camp, OH 43322 · last Apr 25, first Oct 20
- Marion, OH 43302 · last Apr 25, first Oct 20
- Kilbourne, OH 43032 · last Apr 22, first Oct 24
- Delaware, OH 43015 · last Apr 19, first Oct 26
Frequently asked questions
- When is the last frost in Waldo, OH?
- For ZIP code 43356, the average last spring frost (32°F) is April 25, based on NOAA 1991-2020 climate normals for the Marion 2 N, OH weather station. There is a 1-in-10 chance of a frost after May 11.
- When is the first frost in Waldo, OH?
- The average first fall frost (32°F) is October 20. There is a 1-in-10 chance of frost by October 5, so tender plants are at risk from that point on.
- How long is the growing season in 43356?
- 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.