Frost Dates for Mishawaka, IN
In Mishawaka, IN, the average last spring frost is around Apr 23 and the average first fall frost around Oct 23, for a growing season of about 181 days. For frost-tender plants, wait until May 9, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the S Bend, IN weather station, 5 miles away, elevation 710 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 9 | Oct 9 |
| 20% | May 3 | Oct 14 |
| 30% | Apr 30 | Oct 18 |
| 40% | Apr 26 | Oct 20 |
| 50% | Apr 23 | Oct 23 |
| 60% | Apr 21 | Oct 26 |
| 70% | Apr 18 | Oct 29 |
| 80% | Apr 15 | Nov 1 |
| 90% | Apr 11 | Nov 5 |
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 3 | Oct 12 |
| Frost / freeze (32°F) | Apr 23 | Oct 23 |
| Hard freeze (28°F) | Apr 12 | Nov 3 |
Planting calendar for Mishawaka
Transplant Apr 30 – May 14
Transplant May 7 – May 21
Transplant May 7 – May 21
Transplant Apr 30 – May 14
Sow or transplant Apr 30 – May 14
Sow or transplant Apr 30 – May 14
Sow or transplant May 7 – May 21
Sow or transplant Mar 26 – Apr 9
Fall sowing Aug 28 – Sep 25
Fall sowing Aug 28 – Sep 18
Fall sowing Aug 14 – Aug 28
Sow or transplant Mar 26 – Apr 9
Fall sowing Aug 14 – Sep 11
Transplant Apr 9 – Apr 23
Fall sowing Jul 31 – Aug 14
Transplant Apr 2 – Apr 16
Fall sowing Jul 31 – Aug 14
Fall sowing Jul 31 – Aug 14
Fall sowing Sep 11 – Oct 2
Fall sowing Aug 14 – Aug 28
Plant Mar 26 – Apr 9
Based on the average last frost (Apr 23) and first frost (Oct 23). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.