Frost dates for 13489West Leyden, NY
The average last spring frost in West Leyden is May 10 and the average first fall frost is October 4, giving a typical growing season of about 145 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 10
- Average first fall frost
- Oct 4
- Growing season
- 145 days
Safer after May 28 (1-in-10 risk)
Possible by Sep 22 (1-in-10 risk)
Last frost typically in 188 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) | May 8 · May 24 · Jun 8 | Sep 12 · Sep 25 · Oct 6 | 123 days | 100% |
| Frost / freeze (32°F) | Apr 28 · May 10 · May 28 | Sep 22 · Oct 4 · Oct 18 | 145 days | 100% |
| Hard freeze (28°F) | Apr 17 · Apr 30 · May 16 | Oct 1 · Oct 15 · Oct 31 | 167 days | 100% |
Planting calendar for West Leyden
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 | Apr 9 – Jun 15 |
| Tomatoes | Transplant outdoors | May 26 – Jun 14 |
| Peppers | Start seeds indoors | Apr 9 – May 10 |
| Peppers | Transplant outdoors | Jun 9 – Jul 10 |
| Eggplant | Start seeds indoors | Apr 26 – May 25 |
| Eggplant | Transplant outdoors | Jun 9 – Jul 10 |
| Cucumbers | Sow outdoors | Jun 9 – Jun 24 |
| Summer squash | Sow outdoors | May 26 – Jul 10 |
| Winter squash & pumpkins | Sow outdoors | Jun 9 – Jul 10 |
| Snap beans | Sow outdoors | May 26 – Jul 17 |
| Sweet corn | Sow outdoors | May 26 – Jun 14 |
| Watermelon & cantaloupe | Sow outdoors | Jun 9 – Jul 10 |
| Okra | Sow outdoors | Jun 2 – Jun 25 |
| Peas | Sow outdoors (spring) | Apr 9 – May 25 |
| Potatoes | Plant outdoors (spring) | Apr 9 – Jun 9 |
| Onions | Start seeds indoors (spring) | Feb 26 – Mar 25 |
| Onions | Transplant outdoors (spring) | Apr 26 – May 25 |
| Broccoli | Start seeds indoors (spring) | Mar 22 – Apr 25 |
| Broccoli | Transplant outdoors (spring) | Apr 26 – May 25 |
| Broccoli | Start seeds indoors (fall) | Jun 4 – Jun 14 |
| Broccoli | Transplant outdoors (fall) | Jul 4 – Jul 15 |
| Cabbage | Start seeds indoors (spring) | Mar 12 – Apr 9 |
| Cabbage | Transplant outdoors (spring) | Apr 9 – May 10 |
| Cabbage | Start seeds indoors (fall) | May 25 – Jun 24 |
| Cabbage | Transplant outdoors (fall) | Jun 24 – Jul 25 |
| Leaf lettuce | Sow outdoors (spring) | Apr 9 – Jun 25 |
| Leaf lettuce | Sow outdoors (fall) | Jun 24 – Aug 10 |
| Spinach | Sow outdoors (spring) | Apr 2 – May 16 |
| Spinach | Sow outdoors (fall) | Jul 11 – Aug 15 |
| Radishes | Sow outdoors (spring) | Apr 9 – May 30 |
| Radishes | Sow outdoors (fall) | Jun 24 – Aug 25 |
| Kale | Sow outdoors (spring) | Apr 26 – May 16 |
| Kale | Sow outdoors (fall) | Jun 17 – Jul 25 |
| Carrots | Sow outdoors (spring) | May 10 – Jun 25 |
| Carrots | Sow outdoors (fall) | May 25 – Jul 10 |
| Garlic | Plant outdoors (fall) | Sep 24 – Oct 25 |
Where these dates come from
ZIP code 13489 is matched to the NOAA station Boonville 4 Ssw, NY, 11.8 km away, at 1,550 ft elevation (8 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Boonville 4 Ssw, NY (used) | 1,550 ft | May 10 | Oct 4 |
| Highmarket 2W, NY | 1,804 ft | May 22 | Sep 26 |
| Rome Griffiss Airfield, NY | 519 ft | May 6 | Oct 13 |
| Camden, NY | 580 ft | May 12 | Oct 5 |
Frost dates near West Leyden
- Constableville, NY 13325 · last May 10, first Oct 4
- Ava, NY 13303 · last May 10, first Oct 4
- Boonville, NY 13309 · last May 10, first Oct 4
- Taberg, NY 13471 · last May 12, first Oct 5
- Lee Center, NY 13363 · last May 1, first Oct 13
- Port Leyden, NY 13433 · last May 8, first Oct 1
- Westernville, NY 13486 · last May 1, first Oct 13
- Turin, NY 13473 · last May 10, first Oct 4
Frequently asked questions
- When is the last frost in West Leyden, NY?
- For ZIP code 13489, the average last spring frost (32°F) is May 10, based on NOAA 1991-2020 climate normals for the Boonville 4 Ssw, NY weather station. There is a 1-in-10 chance of a frost after May 28.
- When is the first frost in West Leyden, NY?
- The average first fall frost (32°F) is October 4. There is a 1-in-10 chance of frost by September 22, so tender plants are at risk from that point on.
- How long is the growing season in 13489?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 145 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.