Frost dates for 16728De Young, PA
The average last spring frost in De Young is May 13 and the average first fall frost is October 11, giving a typical growing season of about 150 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 13
- Average first fall frost
- Oct 11
- Growing season
- 150 days
Safer after May 28 (1-in-10 risk)
Possible by Sep 28 (1-in-10 risk)
Last frost typically in 191 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 25 · Jun 7 | Sep 15 · Sep 29 · Oct 11 | 127 days | 100% |
| Frost / freeze (32°F) | Apr 26 · May 13 · May 28 | Sep 28 · Oct 11 · Oct 26 | 150 days | 100% |
| Hard freeze (28°F) | Apr 17 · May 1 · May 19 | Oct 9 · Oct 25 · Nov 7 | 175 days | 100% |
Planting calendar for De Young
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 12 – Jun 18 |
| Tomatoes | Transplant outdoors | May 29 – Jun 21 |
| Peppers | Start seeds indoors | Apr 12 – May 13 |
| Peppers | Transplant outdoors | Jun 12 – Jul 13 |
| Eggplant | Start seeds indoors | Apr 29 – May 28 |
| Eggplant | Transplant outdoors | Jun 12 – Jul 13 |
| Cucumbers | Sow outdoors | Jun 12 – Jul 1 |
| Summer squash | Sow outdoors | May 29 – Jul 13 |
| Winter squash & pumpkins | Sow outdoors | Jun 12 – Jul 13 |
| Snap beans | Sow outdoors | May 29 – Jul 24 |
| Sweet corn | Sow outdoors | May 29 – Jun 21 |
| Watermelon & cantaloupe | Sow outdoors | Jun 12 – Jul 13 |
| Okra | Sow outdoors | Jun 5 – Jun 28 |
| Peas | Sow outdoors (spring) | Apr 12 – May 28 |
| Potatoes | Plant outdoors (spring) | Apr 12 – Jun 12 |
| Onions | Start seeds indoors (spring) | Mar 1 – Mar 28 |
| Onions | Transplant outdoors (spring) | Apr 29 – May 28 |
| Broccoli | Start seeds indoors (spring) | Mar 25 – Apr 28 |
| Broccoli | Transplant outdoors (spring) | Apr 29 – May 28 |
| Broccoli | Start seeds indoors (fall) | Jun 11 – Jun 21 |
| Broccoli | Transplant outdoors (fall) | Jul 11 – Jul 22 |
| Cabbage | Start seeds indoors (spring) | Mar 15 – Apr 12 |
| Cabbage | Transplant outdoors (spring) | Apr 12 – May 13 |
| Cabbage | Start seeds indoors (fall) | Jun 1 – Jul 1 |
| Cabbage | Transplant outdoors (fall) | Jul 1 – Aug 1 |
| Leaf lettuce | Sow outdoors (spring) | Apr 12 – Jun 28 |
| Leaf lettuce | Sow outdoors (fall) | Jul 1 – Aug 17 |
| Spinach | Sow outdoors (spring) | Apr 5 – May 19 |
| Spinach | Sow outdoors (fall) | Jul 18 – Aug 22 |
| Radishes | Sow outdoors (spring) | Apr 12 – Jun 2 |
| Radishes | Sow outdoors (fall) | Jul 1 – Sep 1 |
| Kale | Sow outdoors (spring) | Apr 29 – May 19 |
| Kale | Sow outdoors (fall) | Jun 24 – Aug 1 |
| Carrots | Sow outdoors (spring) | May 13 – Jun 28 |
| Carrots | Sow outdoors (fall) | Jun 1 – Jul 17 |
| Garlic | Plant outdoors (fall) | Oct 1 – Nov 1 |
Where these dates come from
ZIP code 16728 is matched to the NOAA station Ridgway, PA, 7 km away, at 1,360 ft elevation (267 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Ridgway, PA (used) | 1,360 ft | May 13 | Oct 11 |
| Glen Hazel 2 Ne Dam, PA | 1,720 ft | May 14 | Oct 6 |
| Kane 1Nne, PA | 1,750 ft | May 24 | Sep 28 |
| Dubois Jefferson Co Ap, PA | 1,814 ft | May 6 | Oct 14 |
Frost dates near De Young
- Ridgway, PA 15853 · last May 6, first Oct 14
- Kersey, PA 15846 · last May 14, first Oct 6
- Dagus Mines, PA 15831 · last May 14, first Oct 6
- Johnsonburg, PA 15845 · last May 13, first Oct 11
- Saint Marys, PA 15857 · last May 14, first Oct 6
- Brandy Camp, PA 15822 · last May 13, first Oct 11
- Brockport, PA 15823 · last May 6, first Oct 14
- Wilcox, PA 15870 · last May 14, first Oct 6
Frequently asked questions
- When is the last frost in De Young, PA?
- For ZIP code 16728, the average last spring frost (32°F) is May 13, based on NOAA 1991-2020 climate normals for the Ridgway, PA weather station. There is a 1-in-10 chance of a frost after May 28.
- When is the first frost in De Young, PA?
- The average first fall frost (32°F) is October 11. There is a 1-in-10 chance of frost by September 28, so tender plants are at risk from that point on.
- How long is the growing season in 16728?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 150 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.