Frost dates for 15851Reynoldsville, PA
The average last spring frost in Reynoldsville is May 6 and the average first fall frost is October 14, giving a typical growing season of about 160 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 6
- Average first fall frost
- Oct 14
- Growing season
- 160 days
Safer after May 23 (1-in-10 risk)
Possible by Sep 29 (1-in-10 risk)
Last frost typically in 184 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 18 · Jun 1 | Sep 19 · Oct 1 · Oct 13 | 137 days | 100% |
| Frost / freeze (32°F) | Apr 19 · May 6 · May 23 | Sep 29 · Oct 14 · Nov 1 | 160 days | 100% |
| Hard freeze (28°F) | Apr 8 · Apr 24 · May 13 | Oct 11 · Oct 28 · Nov 11 | 186 days | 100% |
Planting calendar for Reynoldsville
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 5 – Jun 11 |
| Tomatoes | Transplant outdoors | May 22 – Jun 24 |
| Peppers | Start seeds indoors | Apr 5 – May 6 |
| Peppers | Transplant outdoors | Jun 5 – Jul 6 |
| Eggplant | Start seeds indoors | Apr 22 – May 21 |
| Eggplant | Transplant outdoors | Jun 5 – Jul 6 |
| Cucumbers | Sow outdoors | Jun 5 – Jul 4 |
| Summer squash | Sow outdoors | May 22 – Jul 6 |
| Winter squash & pumpkins | Sow outdoors | Jun 5 – Jul 6 |
| Snap beans | Sow outdoors | May 22 – Jul 27 |
| Sweet corn | Sow outdoors | May 22 – Jun 24 |
| Watermelon & cantaloupe | Sow outdoors | Jun 5 – Jul 6 |
| Okra | Sow outdoors | May 29 – Jun 21 |
| Peas | Sow outdoors (spring) | Apr 5 – May 21 |
| Potatoes | Plant outdoors (spring) | Apr 5 – Jun 5 |
| Onions | Start seeds indoors (spring) | Feb 22 – Mar 21 |
| Onions | Transplant outdoors (spring) | Apr 22 – May 21 |
| Broccoli | Start seeds indoors (spring) | Mar 18 – Apr 21 |
| Broccoli | Transplant outdoors (spring) | Apr 22 – May 21 |
| Broccoli | Start seeds indoors (fall) | Jun 14 – Jun 24 |
| Broccoli | Transplant outdoors (fall) | Jul 14 – Jul 25 |
| Cabbage | Start seeds indoors (spring) | Mar 8 – Apr 5 |
| Cabbage | Transplant outdoors (spring) | Apr 5 – May 6 |
| Cabbage | Start seeds indoors (fall) | Jun 4 – Jul 4 |
| Cabbage | Transplant outdoors (fall) | Jul 4 – Aug 4 |
| Leaf lettuce | Sow outdoors (spring) | Apr 5 – Jun 21 |
| Leaf lettuce | Sow outdoors (fall) | Jul 4 – Aug 20 |
| Spinach | Sow outdoors (spring) | Mar 29 – May 12 |
| Spinach | Sow outdoors (fall) | Jul 21 – Aug 25 |
| Radishes | Sow outdoors (spring) | Apr 5 – May 26 |
| Radishes | Sow outdoors (fall) | Jul 4 – Sep 4 |
| Kale | Sow outdoors (spring) | Apr 22 – May 12 |
| Kale | Sow outdoors (fall) | Jun 27 – Aug 4 |
| Carrots | Sow outdoors (spring) | May 6 – Jun 21 |
| Carrots | Sow outdoors (fall) | Jun 4 – Jul 20 |
| Garlic | Plant outdoors (fall) | Oct 4 – Nov 4 |
Where these dates come from
ZIP code 15851 is matched to the NOAA station Dubois Jefferson Co Ap, PA, 9.1 km away, at 1,814 ft elevation (436 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Dubois Jefferson Co Ap, PA (used) | 1,814 ft | May 6 | Oct 14 |
| Grampian 1E, PA | 1,510 ft | May 4 | Oct 13 |
| Ridgway, PA | 1,360 ft | May 13 | Oct 11 |
| Putneyville 2 Se Dam, PA | 1,280 ft | May 10 | Oct 12 |
Frost dates near Reynoldsville
- Sykesville, PA 15865 · last May 6, first Oct 14
- De Lancey, PA 15733 · last May 6, first Oct 14
- Falls Creek, PA 15840 · last May 6, first Oct 14
- Stump Creek, PA 15863 · last May 6, first Oct 14
- Knox Dale, PA 15847 · last May 6, first Oct 14
- Troutville, PA 15866 · last May 6, first Oct 14
- Du Bois, PA 15801 · last May 6, first Oct 14
- Anita, PA 15711 · last May 6, first Oct 14
Frequently asked questions
- When is the last frost in Reynoldsville, PA?
- For ZIP code 15851, the average last spring frost (32°F) is May 6, based on NOAA 1991-2020 climate normals for the Dubois Jefferson Co Ap, PA weather station. There is a 1-in-10 chance of a frost after May 23.
- When is the first frost in Reynoldsville, PA?
- The average first fall frost (32°F) is October 14. There is a 1-in-10 chance of frost by September 29, so tender plants are at risk from that point on.
- How long is the growing season in 15851?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 160 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.