Frost dates for 12748Jeffersonville, NY
The average last spring frost in Jeffersonville 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 Jeffersonville
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 12748 is matched to the NOAA station Callicoon Ctr, NY, 6 km away, at 1,221 ft elevation (79 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 |
| Rock Hill 3 Sw, NY | 1,270 ft | May 7 | Oct 7 |
Frost dates near Jeffersonville
- Youngsville, NY 12791 · last May 12, first Oct 7
- Kenoza Lake, NY 12750 · last May 12, first Oct 7
- North Branch, NY 12766 · last May 9, first Oct 5
- Callicoon Center, NY 12724 · last May 12, first Oct 7
- White Sulphur Springs, NY 12787 · last May 9, first Oct 5
- Swan Lake, NY 12783 · last May 9, first Oct 5
- Hortonville, NY 12745 · last May 3, first Oct 9
- Obernburg, NY 12767 · last May 9, first Oct 5
Frequently asked questions
- When is the last frost in Jeffersonville, NY?
- For ZIP code 12748, 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 Jeffersonville, 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 12748?
- 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.