Frost dates for 15014Brackenridge, PA
The average last spring frost in Brackenridge is April 16 and the average first fall frost is November 2, giving a typical growing season of about 199 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 16
- Average first fall frost
- Nov 2
- Growing season
- 199 days
Safer after May 2 (1-in-10 risk)
Possible by Oct 20 (1-in-10 risk)
Last frost typically in 164 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 14 · Apr 29 · May 16 | Oct 7 · Oct 21 · Nov 3 | 174 days | 100% |
| Frost / freeze (32°F) | Mar 31 · Apr 16 · May 2 | Oct 20 · Nov 2 · Nov 16 | 199 days | 100% |
| Hard freeze (28°F) | Mar 19 · Apr 3 · Apr 16 | Nov 2 · Nov 14 · Dec 1 | 224 days | 100% |
Planting calendar for Brackenridge
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 16 – May 22 |
| Tomatoes | Transplant outdoors | May 2 – Jul 13 |
| Peppers | Start seeds indoors | Mar 16 – Apr 16 |
| Peppers | Transplant outdoors | May 16 – Jun 16 |
| Eggplant | Start seeds indoors | Apr 2 – May 1 |
| Eggplant | Transplant outdoors | May 16 – Jun 16 |
| Cucumbers | Sow outdoors | May 16 – Jul 23 |
| Summer squash | Sow outdoors | May 2 – Jun 16 |
| Winter squash & pumpkins | Sow outdoors | May 16 – Jun 16 |
| Snap beans | Sow outdoors | May 2 – Aug 15 |
| Sweet corn | Sow outdoors | May 2 – Jul 13 |
| Watermelon & cantaloupe | Sow outdoors | May 16 – Jun 16 |
| Okra | Sow outdoors | May 9 – Jun 1 |
| Peas | Sow outdoors (spring) | Mar 16 – May 1 |
| Potatoes | Plant outdoors (spring) | Mar 16 – May 16 |
| Onions | Start seeds indoors (spring) | Feb 2 – Mar 1 |
| Onions | Transplant outdoors (spring) | Apr 2 – May 1 |
| Broccoli | Start seeds indoors (spring) | Feb 26 – Apr 1 |
| Broccoli | Transplant outdoors (spring) | Apr 2 – May 1 |
| Broccoli | Start seeds indoors (fall) | Jul 3 – Jul 13 |
| Broccoli | Transplant outdoors (fall) | Aug 2 – Aug 13 |
| Cabbage | Start seeds indoors (spring) | Feb 16 – Mar 16 |
| Cabbage | Transplant outdoors (spring) | Mar 16 – Apr 16 |
| Cabbage | Start seeds indoors (fall) | Jun 23 – Jul 23 |
| Cabbage | Transplant outdoors (fall) | Jul 23 – Aug 23 |
| Leaf lettuce | Sow outdoors (spring) | Mar 16 – Jun 1 |
| Leaf lettuce | Sow outdoors (fall) | Jul 23 – Sep 8 |
| Spinach | Sow outdoors (spring) | Mar 9 – Apr 22 |
| Spinach | Sow outdoors (fall) | Aug 9 – Sep 13 |
| Radishes | Sow outdoors (spring) | Mar 16 – May 6 |
| Radishes | Sow outdoors (fall) | Jul 23 – Sep 23 |
| Kale | Sow outdoors (spring) | Apr 2 – Apr 22 |
| Kale | Sow outdoors (fall) | Jul 16 – Aug 23 |
| Carrots | Sow outdoors (spring) | Apr 16 – Jun 1 |
| Carrots | Sow outdoors (fall) | Jun 23 – Aug 8 |
| Garlic | Plant outdoors (fall) | Oct 23 – Nov 23 |
Where these dates come from
ZIP code 15014 is matched to the NOAA station Natrona Lock 4, PA, 2 km away, at 760 ft elevation (80 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Natrona Lock 4, PA (used) | 760 ft | Apr 16 | Nov 2 |
| Acmetonia Lock 3, PA | 748 ft | Apr 16 | Nov 1 |
| Schenley Lock 5, PA | 783 ft | Apr 21 | Oct 30 |
| Salina 3 W, PA | 1,109 ft | Apr 29 | Oct 20 |
Frost dates near Brackenridge
- Tarentum, PA 15084 · last Apr 29, first Oct 20
- Natrona Heights, PA 15065 · last Apr 29, first Oct 20
- Creighton, PA 15030 · last Apr 16, first Nov 2
- New Kensington, PA 15069 · last Apr 16, first Nov 1
- Rural Ridge, PA 15075 · last Apr 16, first Nov 1
- Harwick, PA 15049 · last Apr 16, first Nov 1
- Russellton, PA 15076 · last May 7, first Oct 14
- Springdale, PA 15144 · last Apr 16, first Nov 1
Frequently asked questions
- When is the last frost in Brackenridge, PA?
- For ZIP code 15014, the average last spring frost (32°F) is April 16, based on NOAA 1991-2020 climate normals for the Natrona Lock 4, PA weather station. There is a 1-in-10 chance of a frost after May 2.
- When is the first frost in Brackenridge, PA?
- The average first fall frost (32°F) is November 2. There is a 1-in-10 chance of frost by October 20, so tender plants are at risk from that point on.
- How long is the growing season in 15014?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 199 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.