Frost dates for 15096 — Warrendale, PA
Last spring frostApr 8median date
First fall frostNov 8median date
Growing season214 daysfrost-free
Hardiness zone6bZone 6b
How Warrendale compares
- In 8 years out of 10, the last spring frost in Warrendale falls between March 25 and April 26, a 32-day window. The first fall frost falls between October 27 and November 24.
- The median last frost is 19 days earlier than the Pennsylvania median of Apr 27.
- Its 214-day growing season is longer than 96% of the 1,787 Pennsylvania places with a regular frost season (state median 175 days).
- The last frost is 14 days earlier than the zone 6b median of Apr 22. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6b chart.
- The weather station records an average of 93 nights a year at or below 32°F.
- Compared with Pittsburgh, PA, 24 km away, the last frost here is 16 days earlier than there and the growing season is 28 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 25 |
| 50% (median) | April 8 |
| 10% (safe for tender plants) | April 26 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 27 |
| 50% (median) | November 8 |
| 90% (late) | November 24 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Warrendale, PA
Frost dates for 15096 — Warrendale, PA — last frost Apr 8, first frost Nov 8, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Jan 14 to Jan 28Transplant outside: Mar 11 to Mar 25
Start indoors: Jan 28 to Feb 11Transplant outside: Apr 22 to May 6
Start indoors: Jan 28 to Feb 11Transplant outside: Apr 22 to May 6
Start indoors: Feb 11 to Feb 25Transplant outside: Apr 15 to Apr 29
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 18 to Apr 1Sow outdoors: Mar 11 to Apr 15Plant for fall: Sep 13 to Oct 11
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 11 to Mar 25Sow outdoors: Mar 11 to Mar 25Plant for fall: Aug 30 to Sep 20
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 25 to Apr 8Plant for fall: Aug 2 to Aug 23
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 18 to Apr 1Plant for fall: Aug 2 to Aug 23
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 25 to Apr 8Plant for fall: Aug 2 to Aug 23
Start indoors: Feb 25 to Mar 11Transplant outside: Apr 29 to May 13Sow outdoors: Apr 29 to May 13
Start indoors: Feb 25 to Mar 11Transplant outside: Apr 15 to Apr 29
Sow outdoors: Feb 25 to Mar 18Plant for fall: Aug 16 to Sep 6
Sow outdoors: Feb 25 to Mar 18Plant for fall: Sep 13 to Oct 4
Sow outdoors: Mar 4 to Apr 15Plant for fall: Sep 27 to Oct 18
Start indoors: Mar 11 to Mar 18Transplant outside: Apr 22 to Apr 29Sow outdoors: Apr 15 to Apr 29Plant for fall: Aug 23 to Sep 6
Start indoors: Mar 11 to Mar 18Sow outdoors: Apr 15 to Apr 29Plant for fall: Aug 30 to Sep 13
Start indoors: Mar 11 to Mar 18Sow outdoors: Apr 15 to Apr 29
Start indoors: Mar 11 to Mar 18Transplant outside: Apr 22 to May 6
Sow outdoors: Mar 18 to Apr 15Plant for fall: Aug 16 to Aug 30
Sow outdoors: Mar 18 to Apr 15Plant for fall: Aug 30 to Sep 13
Sow outdoors: Mar 18 to Apr 8
Sow outdoors: Mar 25 to Apr 22Plant for fall: Aug 30 to Sep 13
Sow outdoors: Mar 25 to Apr 15Plant for fall: Sep 13 to Oct 4
Sow outdoors: Apr 15 to May 6Plant for fall: Aug 23 to Sep 6
Sow outdoors: Apr 15 to Apr 29
Transplant outside: Apr 22 to May 13
Plant for fall: Oct 25 to Nov 29
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Warrendale, PA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 14 – Jan 28 | Mar 11 – Mar 25 | — | — |
| Peppers | Jan 28 – Feb 11 | Apr 22 – May 6 | — | — |
| Eggplant | Jan 28 – Feb 11 | Apr 22 – May 6 | — | — |
| Tomatoes | Feb 11 – Feb 25 | Apr 15 – Apr 29 | — | — |
| Lettuce | Feb 11 – Feb 25 | Mar 18 – Apr 1 | Mar 11 – Apr 15 | Sep 13 – Oct 11 |
| Kale | Feb 11 – Feb 25 | Mar 11 – Mar 25 | Mar 11 – Mar 25 | Aug 30 – Sep 20 |
| Broccoli | Feb 11 – Feb 25 | Mar 25 – Apr 8 | — | Aug 2 – Aug 23 |
| Cabbage | Feb 11 – Feb 25 | Mar 18 – Apr 1 | — | Aug 2 – Aug 23 |
| Cauliflower | Feb 11 – Feb 25 | Mar 25 – Apr 8 | — | Aug 2 – Aug 23 |
| Okra | Feb 25 – Mar 11 | Apr 29 – May 13 | Apr 29 – May 13 | — |
| Basil | Feb 25 – Mar 11 | Apr 15 – Apr 29 | — | — |
| Peas | — | — | Feb 25 – Mar 18 | Aug 16 – Sep 6 |
| Spinach | — | — | Feb 25 – Mar 18 | Sep 13 – Oct 4 |
| Radishes | — | — | Mar 4 – Apr 15 | Sep 27 – Oct 18 |
| Cucumbers | Mar 11 – Mar 18 | Apr 22 – Apr 29 | Apr 15 – Apr 29 | Aug 23 – Sep 6 |
| Zucchini & Summer Squash | Mar 11 – Mar 18 | — | Apr 15 – Apr 29 | Aug 30 – Sep 13 |
| Winter Squash & Pumpkins | Mar 11 – Mar 18 | — | Apr 15 – Apr 29 | — |
| Melons & Watermelon | Mar 11 – Mar 18 | Apr 22 – May 6 | — | — |
| Carrots | — | — | Mar 18 – Apr 15 | Aug 16 – Aug 30 |
| Beets | — | — | Mar 18 – Apr 15 | Aug 30 – Sep 13 |
| Potatoes | — | — | Mar 18 – Apr 8 | — |
| Swiss Chard | — | — | Mar 25 – Apr 22 | Aug 30 – Sep 13 |
| Cilantro | — | — | Mar 25 – Apr 15 | Sep 13 – Oct 4 |
| Green Beans | — | — | Apr 15 – May 6 | Aug 23 – Sep 6 |
| Sweet Corn | — | — | Apr 15 – Apr 29 | — |
| Sweet Potatoes | — | Apr 22 – May 13 | — | — |
| Garlic | — | — | — | Oct 25 – Nov 29 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Glenwillard Dashields L&D, PA weather station, 16 km away (elevation 709 ft (216 m)).
ZIP codes in Warrendale: 15086 15095 15096
Frost dates near Warrendale
- Bradfordwoods Apr 8 · Nov 8
- Cranberry Township Apr 8 · Nov 8
- Wexford Apr 24 · Oct 27
- Mars May 7 · Oct 14
- Ingomar Apr 24 · Oct 27
- Baden Apr 8 · Nov 8
- Callery May 7 · Oct 14
- Wildwood Apr 24 · Oct 27
Frequently asked questions
When is the last frost in Warrendale, PA?
The median last spring frost in Warrendale, PA is April 8. There is still about a 10% chance of frost after April 26, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Warrendale, PA?
The median first fall frost is November 8, with about a 10% chance of frost before October 27.
How long is the growing season in Warrendale, PA?
About 214 days between the median last spring frost and first fall frost.
What planting zone is Warrendale, PA?
Warrendale, PA is in USDA hardiness zone 6b.