Frost dates for 14427Castile, NY
The average last spring frost in Castile is April 30 and the average first fall frost is October 17, giving a typical growing season of about 170 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 30
- Average first fall frost
- Oct 17
- Growing season
- 170 days
Safer after May 13 (1-in-10 risk)
Possible by Oct 1 (1-in-10 risk)
Last frost typically in 180 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 26 · May 9 · May 25 | Sep 22 · Oct 4 · Oct 19 | 147 days | 100% |
| Frost / freeze (32°F) | Apr 17 · Apr 30 · May 13 | Oct 1 · Oct 17 · Nov 2 | 170 days | 100% |
| Hard freeze (28°F) | Apr 4 · Apr 18 · May 2 | Oct 13 · Nov 1 · Nov 15 | 195 days | 100% |
Planting calendar for Castile
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 30 – Jun 5 |
| Tomatoes | Transplant outdoors | May 16 – Jun 27 |
| Peppers | Start seeds indoors | Mar 30 – Apr 30 |
| Peppers | Transplant outdoors | May 30 – Jun 30 |
| Eggplant | Start seeds indoors | Apr 16 – May 15 |
| Eggplant | Transplant outdoors | May 30 – Jun 30 |
| Cucumbers | Sow outdoors | May 30 – Jul 7 |
| Summer squash | Sow outdoors | May 16 – Jun 30 |
| Winter squash & pumpkins | Sow outdoors | May 30 – Jun 30 |
| Snap beans | Sow outdoors | May 16 – Jul 30 |
| Sweet corn | Sow outdoors | May 16 – Jun 27 |
| Watermelon & cantaloupe | Sow outdoors | May 30 – Jun 30 |
| Okra | Sow outdoors | May 23 – Jun 15 |
| Peas | Sow outdoors (spring) | Mar 30 – May 15 |
| Potatoes | Plant outdoors (spring) | Mar 30 – May 30 |
| Onions | Start seeds indoors (spring) | Feb 16 – Mar 15 |
| Onions | Transplant outdoors (spring) | Apr 16 – May 15 |
| Broccoli | Start seeds indoors (spring) | Mar 12 – Apr 15 |
| Broccoli | Transplant outdoors (spring) | Apr 16 – May 15 |
| Broccoli | Start seeds indoors (fall) | Jun 17 – Jun 27 |
| Broccoli | Transplant outdoors (fall) | Jul 17 – Jul 28 |
| Cabbage | Start seeds indoors (spring) | Mar 2 – Mar 30 |
| Cabbage | Transplant outdoors (spring) | Mar 30 – Apr 30 |
| Cabbage | Start seeds indoors (fall) | Jun 7 – Jul 7 |
| Cabbage | Transplant outdoors (fall) | Jul 7 – Aug 7 |
| Leaf lettuce | Sow outdoors (spring) | Mar 30 – Jun 15 |
| Leaf lettuce | Sow outdoors (fall) | Jul 7 – Aug 23 |
| Spinach | Sow outdoors (spring) | Mar 23 – May 6 |
| Spinach | Sow outdoors (fall) | Jul 24 – Aug 28 |
| Radishes | Sow outdoors (spring) | Mar 30 – May 20 |
| Radishes | Sow outdoors (fall) | Jul 7 – Sep 7 |
| Kale | Sow outdoors (spring) | Apr 16 – May 6 |
| Kale | Sow outdoors (fall) | Jun 30 – Aug 7 |
| Carrots | Sow outdoors (spring) | Apr 30 – Jun 15 |
| Carrots | Sow outdoors (fall) | Jun 7 – Jul 23 |
| Garlic | Plant outdoors (fall) | Oct 7 – Nov 7 |
Where these dates come from
ZIP code 14427 is matched to the NOAA station Mt Morris 2 W, NY, 16.2 km away, at 880 ft elevation (452 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Mt Morris 2 W, NY (used) | 880 ft | Apr 30 | Oct 17 |
| Warsaw 6 Sw, NY | 1,820 ft | May 7 | Oct 10 |
| Wyoming 3W, NY | 1,559 ft | May 4 | Oct 17 |
| Dansville, NY | 660 ft | May 4 | Oct 16 |
Frost dates near Castile
- Silver Springs, NY 14550 · last May 7, first Oct 10
- Silver Lake, NY 14549 · last May 7, first Oct 10
- Portageville, NY 14536 · last May 7, first Oct 10
- Gainesville, NY 14066 · last May 7, first Oct 10
- Perry, NY 14530 · last Apr 30, first Oct 17
- Pike, NY 14130 · last May 7, first Oct 10
- Hunt, NY 14846 · last May 7, first Oct 10
- Nunda, NY 14517 · last Apr 30, first Oct 17
Frequently asked questions
- When is the last frost in Castile, NY?
- For ZIP code 14427, the average last spring frost (32°F) is April 30, based on NOAA 1991-2020 climate normals for the Mt Morris 2 W, NY weather station. There is a 1-in-10 chance of a frost after May 13.
- When is the first frost in Castile, NY?
- The average first fall frost (32°F) is October 17. There is a 1-in-10 chance of frost by October 1, so tender plants are at risk from that point on.
- How long is the growing season in 14427?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 170 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.