When to plant in Baldwin, PA
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Baldwin, Pennsylvania — all computed from Baldwin's nearest NOAA weather station.
In zone 6b, Baldwin gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
PITTSBURGH ALLEGHENY CO AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Baldwin’s own odds, recorded at PITTSBURGH ALLEGHENY CO AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 17 | Apr 29 | Apr 16 | Oct 4 | Oct 17 | Oct 29 |
| 32°F | May 6 | Apr 18 | Apr 2 | Oct 14 | Oct 28 | Nov 10 |
| 28°F | Apr 21 | Apr 5 | Mar 23 | Oct 28 | Nov 8 | Nov 22 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Baldwin, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 9 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Baldwin planting FAQ
When is the last spring frost in Baldwin, PA?
Baldwin's average last spring frost falls near April 18 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Baldwin, PA?
Expect Baldwin's first fall frost near October 28 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Baldwin in?
Baldwin is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Baldwin?
Baldwin has about 193 frost-free days — a moderate growing season — between the average last spring frost (April 18) and first fall frost (October 28).
When should I plant tomatoes in Baldwin?
For Baldwin, sow tomatoes indoors about February 21–March 7 and move the seedlings out around April 25, after the last spring frost.
Never miss a window in Baldwin
An email when it’s time to start seeds, transplant, and sow — timed to Baldwin’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Munhall · 4 km
- West Mifflin · 4 km
- Whitehall · 4 km
- Pittsburgh · 7 km
- Jefferson Hills · 9 km
- Wilkinsburg · 9 km
- McKeesport · 10 km
- Bethel Park · 10 km
Frost dates recorded at PITTSBURGH ALLEGHENY CO AP, 4 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Baldwin, PA — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014762. Retrieved from https://blissgarden.com/pennsylvania/baldwin.