Frost dates for 46732Cromwell, IN
The average last spring frost in Cromwell is April 24 and the average first fall frost is October 24, giving a typical growing season of about 182 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 24
- Average first fall frost
- Oct 24
- Growing season
- 182 days
Safer after May 10 (1-in-10 risk)
Possible by Oct 12 (1-in-10 risk)
Last frost typically in 172 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 4 · May 19 | Sep 29 · Oct 13 · Oct 25 | 159 days | 100% |
| Frost / freeze (32°F) | Apr 9 · Apr 24 · May 10 | Oct 12 · Oct 24 · Nov 6 | 182 days | 100% |
| Hard freeze (28°F) | Mar 28 · Apr 12 · Apr 30 | Oct 24 · Nov 4 · Nov 19 | 207 days | 100% |
Planting calendar for Cromwell
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 24 – May 30 |
| Tomatoes | Transplant outdoors | May 10 – Jul 4 |
| Peppers | Start seeds indoors | Mar 24 – Apr 24 |
| Peppers | Transplant outdoors | May 24 – Jun 24 |
| Eggplant | Start seeds indoors | Apr 10 – May 9 |
| Eggplant | Transplant outdoors | May 24 – Jun 24 |
| Cucumbers | Sow outdoors | May 24 – Jul 14 |
| Summer squash | Sow outdoors | May 10 – Jun 24 |
| Winter squash & pumpkins | Sow outdoors | May 24 – Jun 24 |
| Snap beans | Sow outdoors | May 10 – Aug 6 |
| Sweet corn | Sow outdoors | May 10 – Jul 4 |
| Watermelon & cantaloupe | Sow outdoors | May 24 – Jun 24 |
| Okra | Sow outdoors | May 17 – Jun 9 |
| Peas | Sow outdoors (spring) | Mar 24 – May 9 |
| Potatoes | Plant outdoors (spring) | Mar 24 – May 24 |
| Onions | Start seeds indoors (spring) | Feb 10 – Mar 9 |
| Onions | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (spring) | Mar 6 – Apr 9 |
| Broccoli | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (fall) | Jun 24 – Jul 4 |
| Broccoli | Transplant outdoors (fall) | Jul 24 – Aug 4 |
| Cabbage | Start seeds indoors (spring) | Feb 24 – Mar 24 |
| Cabbage | Transplant outdoors (spring) | Mar 24 – Apr 24 |
| Cabbage | Start seeds indoors (fall) | Jun 14 – Jul 14 |
| Cabbage | Transplant outdoors (fall) | Jul 14 – Aug 14 |
| Leaf lettuce | Sow outdoors (spring) | Mar 24 – Jun 9 |
| Leaf lettuce | Sow outdoors (fall) | Jul 14 – Aug 30 |
| Spinach | Sow outdoors (spring) | Mar 17 – Apr 30 |
| Spinach | Sow outdoors (fall) | Jul 31 – Sep 4 |
| Radishes | Sow outdoors (spring) | Mar 24 – May 14 |
| Radishes | Sow outdoors (fall) | Jul 14 – Sep 14 |
| Kale | Sow outdoors (spring) | Apr 10 – Apr 30 |
| Kale | Sow outdoors (fall) | Jul 7 – Aug 14 |
| Carrots | Sow outdoors (spring) | Apr 24 – Jun 9 |
| Carrots | Sow outdoors (fall) | Jun 14 – Jul 30 |
| Garlic | Plant outdoors (fall) | Oct 14 – Nov 14 |
Where these dates come from
ZIP code 46732 is matched to the NOAA station Northern Indiana Wfo, IN, 8.3 km away, at 951 ft elevation (6 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Northern Indiana Wfo, IN (used) | 951 ft | Apr 24 | Oct 24 |
| Goshen Muni Ap, IN | 827 ft | Apr 28 | Oct 19 |
| Warsaw, IN | 815 ft | Apr 28 | Oct 18 |
| Columbia City, IN | 834 ft | Apr 27 | Oct 17 |
Frost dates near Cromwell
- Kimmell, IN 46760 · last Apr 28, first Oct 19
- Wolflake, IN 46796 · last Apr 27, first Oct 17
- North Webster, IN 46555 · last Apr 28, first Oct 18
- Ligonier, IN 46767 · last Apr 28, first Oct 19
- Syracuse, IN 46567 · last Apr 28, first Oct 19
- Wawaka, IN 46794 · last Apr 26, first Oct 21
- Albion, IN 46701 · last May 2, first Oct 10
- Leesburg, IN 46538 · last Apr 28, first Oct 18
Frequently asked questions
- When is the last frost in Cromwell, IN?
- For ZIP code 46732, the average last spring frost (32°F) is April 24, based on NOAA 1991-2020 climate normals for the Northern Indiana Wfo, IN weather station. There is a 1-in-10 chance of a frost after May 10.
- When is the first frost in Cromwell, IN?
- The average first fall frost (32°F) is October 24. There is a 1-in-10 chance of frost by October 12, so tender plants are at risk from that point on.
- How long is the growing season in 46732?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 182 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.