Frost dates for 47524Decker, IN
The average last spring frost in Decker is April 13 and the average first fall frost is October 25, giving a typical growing season of about 194 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 13
- Average first fall frost
- Oct 25
- Growing season
- 194 days
Safer after Apr 30 (1-in-10 risk)
Possible by Oct 10 (1-in-10 risk)
Last frost typically in 162 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 10 · Apr 24 · May 9 | Oct 1 · Oct 15 · Oct 27 | 173 days | 100% |
| Frost / freeze (32°F) | Mar 29 · Apr 13 · Apr 30 | Oct 10 · Oct 25 · Nov 6 | 194 days | 100% |
| Hard freeze (28°F) | Mar 16 · Apr 2 · Apr 18 | Oct 20 · Nov 3 · Nov 17 | 215 days | 100% |
Planting calendar for Decker
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 13 – May 19 |
| Tomatoes | Transplant outdoors | Apr 29 – Jul 5 |
| Peppers | Start seeds indoors | Mar 13 – Apr 13 |
| Peppers | Transplant outdoors | May 13 – Jun 13 |
| Eggplant | Start seeds indoors | Mar 30 – Apr 28 |
| Eggplant | Transplant outdoors | May 13 – Jun 13 |
| Cucumbers | Sow outdoors | May 13 – Jul 15 |
| Summer squash | Sow outdoors | Apr 29 – Jun 13 |
| Winter squash & pumpkins | Sow outdoors | May 13 – Jun 13 |
| Snap beans | Sow outdoors | Apr 29 – Aug 7 |
| Sweet corn | Sow outdoors | Apr 29 – Jul 5 |
| Watermelon & cantaloupe | Sow outdoors | May 13 – Jun 13 |
| Okra | Sow outdoors | May 6 – May 29 |
| Peas | Sow outdoors (spring) | Mar 13 – Apr 28 |
| Potatoes | Plant outdoors (spring) | Mar 13 – May 13 |
| Onions | Start seeds indoors (spring) | Jan 30 – Feb 26 |
| Onions | Transplant outdoors (spring) | Mar 30 – Apr 28 |
| Broccoli | Start seeds indoors (spring) | Feb 23 – Mar 29 |
| Broccoli | Transplant outdoors (spring) | Mar 30 – Apr 28 |
| Broccoli | Start seeds indoors (fall) | Jun 25 – Jul 5 |
| Broccoli | Transplant outdoors (fall) | Jul 25 – Aug 5 |
| Cabbage | Start seeds indoors (spring) | Feb 13 – Mar 13 |
| Cabbage | Transplant outdoors (spring) | Mar 13 – Apr 13 |
| Cabbage | Start seeds indoors (fall) | Jun 15 – Jul 15 |
| Cabbage | Transplant outdoors (fall) | Jul 15 – Aug 15 |
| Leaf lettuce | Sow outdoors (spring) | Mar 13 – May 29 |
| Leaf lettuce | Sow outdoors (fall) | Jul 15 – Aug 31 |
| Spinach | Sow outdoors (spring) | Mar 6 – Apr 19 |
| Spinach | Sow outdoors (fall) | Aug 1 – Sep 5 |
| Radishes | Sow outdoors (spring) | Mar 13 – May 3 |
| Radishes | Sow outdoors (fall) | Jul 15 – Sep 15 |
| Kale | Sow outdoors (spring) | Mar 30 – Apr 19 |
| Kale | Sow outdoors (fall) | Jul 8 – Aug 15 |
| Carrots | Sow outdoors (spring) | Apr 13 – May 29 |
| Carrots | Sow outdoors (fall) | Jun 15 – Jul 31 |
| Garlic | Plant outdoors (fall) | Oct 15 – Nov 15 |
Where these dates come from
ZIP code 47524 is matched to the NOAA station Princeton 1 W, IN, 17.1 km away, at 480 ft elevation (37 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Princeton 1 W, IN (used) | 480 ft | Apr 13 | Oct 25 |
| Mt Carmel, IL | 430 ft | Apr 2 | Oct 31 |
| Petersburg 61 Brg, IN | 472 ft | Apr 20 | Oct 22 |
| Vincennes 5 Ne, IN | 452 ft | Apr 11 | Oct 26 |
Frost dates near Decker
- Hazleton, IN 47640 · last Apr 13, first Oct 25
- Patoka, IN 47666 · last Apr 13, first Oct 25
- Saint Francisville, IL 62460 · last Apr 12, first Oct 25
- Allendale, IL 62410 · last Apr 2, first Oct 31
- Princeton, IN 47670 · last Apr 13, first Oct 25
- Vincennes, IN 47591 · last Apr 11, first Oct 26
- Monroe City, IN 47557 · last Apr 10, first Oct 25
- Francisco, IN 47649 · last Apr 13, first Oct 25
Frequently asked questions
- When is the last frost in Decker, IN?
- For ZIP code 47524, the average last spring frost (32°F) is April 13, based on NOAA 1991-2020 climate normals for the Princeton 1 W, IN weather station. There is a 1-in-10 chance of a frost after April 30.
- When is the first frost in Decker, IN?
- The average first fall frost (32°F) is October 25. There is a 1-in-10 chance of frost by October 10, so tender plants are at risk from that point on.
- How long is the growing season in 47524?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 194 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.