Frost dates for 15461Masontown, PA
The average last spring frost in Masontown is April 28 and the average first fall frost is October 21, giving a typical growing season of about 175 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 28
- Average first fall frost
- Oct 21
- Growing season
- 175 days
Safer after May 14 (1-in-10 risk)
Possible by Oct 9 (1-in-10 risk)
Last frost typically in 177 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 25 · May 8 · May 23 | Sep 29 · Oct 11 · Oct 24 | 155 days | 100% |
| Frost / freeze (32°F) | Apr 15 · Apr 28 · May 14 | Oct 9 · Oct 21 · Nov 1 | 175 days | 100% |
| Hard freeze (28°F) | Apr 1 · Apr 16 · May 1 | Oct 19 · Oct 31 · Nov 12 | 198 days | 100% |
Planting calendar for Masontown
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 | Mar 28 – Jun 3 |
| Tomatoes | Transplant outdoors | May 14 – Jul 1 |
| Peppers | Start seeds indoors | Mar 28 – Apr 28 |
| Peppers | Transplant outdoors | May 28 – Jun 28 |
| Eggplant | Start seeds indoors | Apr 14 – May 13 |
| Eggplant | Transplant outdoors | May 28 – Jun 28 |
| Cucumbers | Sow outdoors | May 28 – Jul 11 |
| Summer squash | Sow outdoors | May 14 – Jun 28 |
| Winter squash & pumpkins | Sow outdoors | May 28 – Jun 28 |
| Snap beans | Sow outdoors | May 14 – Aug 3 |
| Sweet corn | Sow outdoors | May 14 – Jul 1 |
| Watermelon & cantaloupe | Sow outdoors | May 28 – Jun 28 |
| Okra | Sow outdoors | May 21 – Jun 13 |
| Peas | Sow outdoors (spring) | Mar 28 – May 13 |
| Potatoes | Plant outdoors (spring) | Mar 28 – May 28 |
| Onions | Start seeds indoors (spring) | Feb 14 – Mar 13 |
| Onions | Transplant outdoors (spring) | Apr 14 – May 13 |
| Broccoli | Start seeds indoors (spring) | Mar 10 – Apr 13 |
| Broccoli | Transplant outdoors (spring) | Apr 14 – May 13 |
| Broccoli | Start seeds indoors (fall) | Jun 21 – Jul 1 |
| Broccoli | Transplant outdoors (fall) | Jul 21 – Aug 1 |
| Cabbage | Start seeds indoors (spring) | Feb 28 – Mar 28 |
| Cabbage | Transplant outdoors (spring) | Mar 28 – Apr 28 |
| Cabbage | Start seeds indoors (fall) | Jun 11 – Jul 11 |
| Cabbage | Transplant outdoors (fall) | Jul 11 – Aug 11 |
| Leaf lettuce | Sow outdoors (spring) | Mar 28 – Jun 13 |
| Leaf lettuce | Sow outdoors (fall) | Jul 11 – Aug 27 |
| Spinach | Sow outdoors (spring) | Mar 21 – May 4 |
| Spinach | Sow outdoors (fall) | Jul 28 – Sep 1 |
| Radishes | Sow outdoors (spring) | Mar 28 – May 18 |
| Radishes | Sow outdoors (fall) | Jul 11 – Sep 11 |
| Kale | Sow outdoors (spring) | Apr 14 – May 4 |
| Kale | Sow outdoors (fall) | Jul 4 – Aug 11 |
| Carrots | Sow outdoors (spring) | Apr 28 – Jun 13 |
| Carrots | Sow outdoors (fall) | Jun 11 – Jul 27 |
| Garlic | Plant outdoors (fall) | Oct 11 – Nov 11 |
Where these dates come from
ZIP code 15461 is matched to the NOAA station Grays Landing, PA, 6.7 km away, at 800 ft elevation (243 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Grays Landing, PA (used) | 800 ft | Apr 28 | Oct 21 |
| Pt Marion Lock 8, PA | 810 ft | Apr 30 | Oct 23 |
| Lake Lynn, WV | 900 ft | Apr 25 | Oct 24 |
| Uniontown 1 Ne, PA | 956 ft | Apr 30 | Oct 18 |
Frost dates near Masontown
- Leckrone, PA 15454 · last Apr 30, first Oct 18
- Ronco, PA 15476 · last Apr 28, first Oct 21
- Martin, PA 15460 · last Apr 28, first Oct 21
- Nemacolin, PA 15351 · last Apr 28, first Oct 21
- Greensboro, PA 15338 · last Apr 28, first Oct 21
- Mc Clellandtown, PA 15458 · last Apr 30, first Oct 18
- New Geneva, PA 15467 · last Apr 28, first Oct 21
- Adah, PA 15410 · last Apr 28, first Oct 21
Frequently asked questions
- When is the last frost in Masontown, PA?
- For ZIP code 15461, the average last spring frost (32°F) is April 28, based on NOAA 1991-2020 climate normals for the Grays Landing, PA weather station. There is a 1-in-10 chance of a frost after May 14.
- When is the first frost in Masontown, PA?
- The average first fall frost (32°F) is October 21. There is a 1-in-10 chance of frost by October 9, so tender plants are at risk from that point on.
- How long is the growing season in 15461?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 175 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.