Frost dates for 12791Youngsville, NY
The average last spring frost in Youngsville is May 12 and the average first fall frost is October 7, giving a typical growing season of about 146 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 12
- Average first fall frost
- Oct 7
- Growing season
- 146 days
Safer after May 28 (1-in-10 risk)
Possible by Sep 25 (1-in-10 risk)
Last frost typically in 190 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 5 | Sep 13 · Sep 27 · Oct 8 | 125 days | 100% |
| Frost / freeze (32°F) | Apr 25 · May 12 · May 28 | Sep 25 · Oct 7 · Oct 19 | 146 days | 100% |
| Hard freeze (28°F) | Apr 10 · Apr 29 · May 17 | Oct 5 · Oct 20 · Nov 1 | 173 days | 100% |
Planting calendar for Youngsville
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 11 – Jun 17 |
| Tomatoes | Transplant outdoors | May 28 – Jun 17 |
| Peppers | Start seeds indoors | Apr 11 – May 12 |
| Peppers | Transplant outdoors | Jun 11 – Jul 12 |
| Eggplant | Start seeds indoors | Apr 28 – May 27 |
| Eggplant | Transplant outdoors | Jun 11 – Jul 12 |
| Cucumbers | Sow outdoors | Jun 11 – Jun 27 |
| Summer squash | Sow outdoors | May 28 – Jul 12 |
| Winter squash & pumpkins | Sow outdoors | Jun 11 – Jul 12 |
| Snap beans | Sow outdoors | May 28 – Jul 20 |
| Sweet corn | Sow outdoors | May 28 – Jun 17 |
| Watermelon & cantaloupe | Sow outdoors | Jun 11 – Jul 12 |
| Okra | Sow outdoors | Jun 4 – Jun 27 |
| Peas | Sow outdoors (spring) | Apr 11 – May 27 |
| Potatoes | Plant outdoors (spring) | Apr 11 – Jun 11 |
| Onions | Start seeds indoors (spring) | Feb 28 – Mar 27 |
| Onions | Transplant outdoors (spring) | Apr 28 – May 27 |
| Broccoli | Start seeds indoors (spring) | Mar 24 – Apr 27 |
| Broccoli | Transplant outdoors (spring) | Apr 28 – May 27 |
| Broccoli | Start seeds indoors (fall) | Jun 7 – Jun 17 |
| Broccoli | Transplant outdoors (fall) | Jul 7 – Jul 18 |
| Cabbage | Start seeds indoors (spring) | Mar 14 – Apr 11 |
| Cabbage | Transplant outdoors (spring) | Apr 11 – May 12 |
| Cabbage | Start seeds indoors (fall) | May 28 – Jun 27 |
| Cabbage | Transplant outdoors (fall) | Jun 27 – Jul 28 |
| Leaf lettuce | Sow outdoors (spring) | Apr 11 – Jun 27 |
| Leaf lettuce | Sow outdoors (fall) | Jun 27 – Aug 13 |
| Spinach | Sow outdoors (spring) | Apr 4 – May 18 |
| Spinach | Sow outdoors (fall) | Jul 14 – Aug 18 |
| Radishes | Sow outdoors (spring) | Apr 11 – Jun 1 |
| Radishes | Sow outdoors (fall) | Jun 27 – Aug 28 |
| Kale | Sow outdoors (spring) | Apr 28 – May 18 |
| Kale | Sow outdoors (fall) | Jun 20 – Jul 28 |
| Carrots | Sow outdoors (spring) | May 12 – Jun 27 |
| Carrots | Sow outdoors (fall) | May 28 – Jul 13 |
| Garlic | Plant outdoors (fall) | Sep 27 – Oct 28 |
Where these dates come from
ZIP code 12791 is matched to the NOAA station Callicoon Ctr, NY, 5.8 km away, at 1,221 ft elevation (56 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Callicoon Ctr, NY (used) | 1,221 ft | May 12 | Oct 7 |
| Liberty 1 Ne, NY | 1,580 ft | May 9 | Oct 5 |
| Milanville, PA | 760 ft | May 3 | Oct 9 |
| Downsville Dam, NY | 1,200 ft | May 15 | Oct 3 |
Frost dates near Youngsville
- Jeffersonville, NY 12748 · last May 12, first Oct 7
- White Sulphur Springs, NY 12787 · last May 9, first Oct 5
- Callicoon Center, NY 12724 · last May 12, first Oct 7
- North Branch, NY 12766 · last May 9, first Oct 5
- Swan Lake, NY 12783 · last May 9, first Oct 5
- Livingston Manor, NY 12758 · last May 9, first Oct 5
- Kenoza Lake, NY 12750 · last May 12, first Oct 7
- Obernburg, NY 12767 · last May 9, first Oct 5
Frequently asked questions
- When is the last frost in Youngsville, NY?
- For ZIP code 12791, the average last spring frost (32°F) is May 12, based on NOAA 1991-2020 climate normals for the Callicoon Ctr, NY weather station. There is a 1-in-10 chance of a frost after May 28.
- When is the first frost in Youngsville, NY?
- The average first fall frost (32°F) is October 7. There is a 1-in-10 chance of frost by September 25, so tender plants are at risk from that point on.
- How long is the growing season in 12791?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 146 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.