Frost dates for 15559Schellsburg, PA
The average last spring frost in Schellsburg is May 4 and the average first fall frost is October 10, giving a typical growing season of about 158 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 4
- Average first fall frost
- Oct 10
- Growing season
- 158 days
Safer after May 21 (1-in-10 risk)
Possible by Sep 28 (1-in-10 risk)
Last frost typically in 182 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 30 · May 17 · May 30 | Sep 18 · Oct 1 · Oct 13 | 136 days | 100% |
| Frost / freeze (32°F) | Apr 19 · May 4 · May 21 | Sep 28 · Oct 10 · Oct 23 | 158 days | 100% |
| Hard freeze (28°F) | Apr 5 · Apr 21 · May 12 | Oct 7 · Oct 22 · Nov 4 | 182 days | 100% |
Planting calendar for Schellsburg
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 3 – Jun 9 |
| Tomatoes | Transplant outdoors | May 20 – Jun 20 |
| Peppers | Start seeds indoors | Apr 3 – May 4 |
| Peppers | Transplant outdoors | Jun 3 – Jul 4 |
| Eggplant | Start seeds indoors | Apr 20 – May 19 |
| Eggplant | Transplant outdoors | Jun 3 – Jul 4 |
| Cucumbers | Sow outdoors | Jun 3 – Jun 30 |
| Summer squash | Sow outdoors | May 20 – Jul 4 |
| Winter squash & pumpkins | Sow outdoors | Jun 3 – Jul 4 |
| Snap beans | Sow outdoors | May 20 – Jul 23 |
| Sweet corn | Sow outdoors | May 20 – Jun 20 |
| Watermelon & cantaloupe | Sow outdoors | Jun 3 – Jul 4 |
| Okra | Sow outdoors | May 27 – Jun 19 |
| Peas | Sow outdoors (spring) | Apr 3 – May 19 |
| Potatoes | Plant outdoors (spring) | Apr 3 – Jun 3 |
| Onions | Start seeds indoors (spring) | Feb 20 – Mar 19 |
| Onions | Transplant outdoors (spring) | Apr 20 – May 19 |
| Broccoli | Start seeds indoors (spring) | Mar 16 – Apr 19 |
| Broccoli | Transplant outdoors (spring) | Apr 20 – May 19 |
| Broccoli | Start seeds indoors (fall) | Jun 10 – Jun 20 |
| Broccoli | Transplant outdoors (fall) | Jul 10 – Jul 21 |
| Cabbage | Start seeds indoors (spring) | Mar 6 – Apr 3 |
| Cabbage | Transplant outdoors (spring) | Apr 3 – May 4 |
| Cabbage | Start seeds indoors (fall) | May 31 – Jun 30 |
| Cabbage | Transplant outdoors (fall) | Jun 30 – Jul 31 |
| Leaf lettuce | Sow outdoors (spring) | Apr 3 – Jun 19 |
| Leaf lettuce | Sow outdoors (fall) | Jun 30 – Aug 16 |
| Spinach | Sow outdoors (spring) | Mar 27 – May 10 |
| Spinach | Sow outdoors (fall) | Jul 17 – Aug 21 |
| Radishes | Sow outdoors (spring) | Apr 3 – May 24 |
| Radishes | Sow outdoors (fall) | Jun 30 – Aug 31 |
| Kale | Sow outdoors (spring) | Apr 20 – May 10 |
| Kale | Sow outdoors (fall) | Jun 23 – Jul 31 |
| Carrots | Sow outdoors (spring) | May 4 – Jun 19 |
| Carrots | Sow outdoors (fall) | May 31 – Jul 16 |
| Garlic | Plant outdoors (fall) | Sep 30 – Oct 31 |
Where these dates come from
ZIP code 15559 is matched to the NOAA station Shawnee Sp, PA, 2 km away, at 1,275 ft elevation (37 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Shawnee Sp, PA (used) | 1,275 ft | May 4 | Oct 10 |
| Wolfsburg, PA | 1,185 ft | Apr 29 | Oct 13 |
| Everett, PA | 1,000 ft | Apr 27 | Oct 17 |
| Johnstown Cambria Co Ap, PA | 2,284 ft | Apr 29 | Oct 21 |
Frost dates near Schellsburg
- Manns Choice, PA 15550 · last May 4, first Oct 10
- New Paris, PA 15554 · last May 4, first Oct 10
- Fishertown, PA 15539 · last May 4, first Oct 10
- Bedford, PA 15522 · last May 4, first Oct 10
- New Baltimore, PA 15553 · last May 4, first Oct 10
- Cairnbrook, PA 15924 · last Apr 29, first Oct 21
- Buffalo Mills, PA 15534 · last May 4, first Oct 10
- Alum Bank, PA 15521 · last May 4, first Oct 10
Frequently asked questions
- When is the last frost in Schellsburg, PA?
- For ZIP code 15559, the average last spring frost (32°F) is May 4, based on NOAA 1991-2020 climate normals for the Shawnee Sp, PA weather station. There is a 1-in-10 chance of a frost after May 21.
- When is the first frost in Schellsburg, PA?
- The average first fall frost (32°F) is October 10. 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 15559?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 158 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.