Frost Dates for Youngstown, OH
In Youngstown, OH, the average last spring frost is around May 1 and the average first fall frost around Oct 17, for a growing season of about 167 days. For frost-tender plants, wait until May 20, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Youngstown Rgnl Airport, OH weather station, 11 miles away, elevation 1,180 ft. Frost can come earlier in low spots and valleys and later near cities and large lakes.
Frost probability by date
Chance of a 32°F frost after the spring date, or before the fall date.
| Chance | Last spring frost | First fall frost |
|---|---|---|
| 10% | May 20 | Oct 1 |
| 20% | May 15 | Oct 6 |
| 30% | May 9 | Oct 10 |
| 40% | May 4 | Oct 14 |
| 50% | May 1 | Oct 17 |
| 60% | Apr 28 | Oct 21 |
| 70% | Apr 25 | Oct 24 |
| 80% | Apr 21 | Oct 28 |
| 90% | Apr 16 | Nov 1 |
Light frost vs. hard freeze
Average (50%) dates for each temperature. Tender plants are damaged at 36°F; most hardy crops survive until 28°F.
| Temperature | Last in spring | First in fall |
|---|---|---|
| Light frost (36°F) | May 16 | Oct 5 |
| Frost / freeze (32°F) | May 1 | Oct 17 |
| Hard freeze (28°F) | Apr 20 | Nov 1 |
Planting calendar for Youngstown
Transplant May 8 – May 22
Transplant May 15 – May 29
Transplant May 15 – May 29
Transplant May 8 – May 22
Sow or transplant May 8 – May 22
Sow or transplant May 8 – May 22
Sow or transplant May 15 – May 29
Sow or transplant Apr 3 – Apr 17
Fall sowing Aug 22 – Sep 19
Fall sowing Aug 22 – Sep 12
Fall sowing Aug 8 – Aug 22
Sow or transplant Apr 3 – Apr 17
Fall sowing Aug 8 – Sep 5
Transplant Apr 17 – May 1
Fall sowing Jul 25 – Aug 8
Transplant Apr 10 – Apr 24
Fall sowing Jul 25 – Aug 8
Fall sowing Jul 25 – Aug 8
Fall sowing Sep 5 – Sep 26
Fall sowing Aug 8 – Aug 22
Plant Apr 3 – Apr 17
Based on the average last frost (May 1) and first frost (Oct 17). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.