Force, PA frost dates
Last spring frostMay 13median date
First fall frostOct 11median date
Growing season151 daysfrost-free
Hardiness zone6aZone 6a
How Force compares
- In 8 years out of 10, the last spring frost in Force falls between April 26 and May 28, a 32-day window. The first fall frost falls between September 28 and October 26.
- The median last frost is 16 days later than the Pennsylvania median of Apr 27.
- Its 151-day growing season is longer than 12% of the 1,787 Pennsylvania places with a regular frost season (state median 175 days).
- The last frost is 14 days later than the zone 6a median of Apr 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6a chart.
- The weather station records an average of 164 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 26 |
| 50% (median) | May 13 |
| 10% (safe for tender plants) | May 28 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 28 |
| 50% (median) | October 11 |
| 90% (late) | October 26 |
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 Force, PA
Force, PA frost dates — last frost May 13, first frost Oct 11, zone 6a. whenisthelastfrost.com
Crop
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Start indoors: Feb 18 to Mar 4Transplant outside: Apr 15 to Apr 29
Start indoors: Mar 4 to Mar 18Transplant outside: May 27 to Jun 10
Start indoors: Mar 4 to Mar 18Transplant outside: May 27 to Jun 10
Start indoors: Mar 18 to Apr 1Transplant outside: May 20 to Jun 3
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 22 to May 6Sow outdoors: Apr 15 to May 20Plant for fall: Aug 16 to Sep 13
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 15 to Apr 29Sow outdoors: Apr 15 to Apr 29Plant for fall: Aug 2 to Aug 23
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 29 to May 13Plant for fall: Jul 5 to Jul 26
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 22 to May 6Plant for fall: Jul 5 to Jul 26
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 29 to May 13Plant for fall: Jul 5 to Jul 26
Start indoors: Apr 1 to Apr 15Transplant outside: Jun 3 to Jun 17Sow outdoors: Jun 3 to Jun 17
Start indoors: Apr 1 to Apr 15Transplant outside: May 20 to Jun 3
Sow outdoors: Apr 1 to Apr 22Plant for fall: Jul 19 to Aug 9
Sow outdoors: Apr 1 to Apr 22Plant for fall: Aug 16 to Sep 6
Sow outdoors: Apr 8 to May 20Plant for fall: Aug 30 to Sep 20
Start indoors: Apr 15 to Apr 22Transplant outside: May 27 to Jun 3Sow outdoors: May 20 to Jun 3Plant for fall: Jul 26 to Aug 9
Start indoors: Apr 15 to Apr 22Sow outdoors: May 20 to Jun 3Plant for fall: Aug 2 to Aug 16
Start indoors: Apr 15 to Apr 22Sow outdoors: May 20 to Jun 3
Start indoors: Apr 15 to Apr 22Transplant outside: May 27 to Jun 10
Sow outdoors: Apr 22 to May 20Plant for fall: Jul 19 to Aug 2
Sow outdoors: Apr 22 to May 20Plant for fall: Aug 2 to Aug 16
Sow outdoors: Apr 22 to May 13
Sow outdoors: Apr 29 to May 27Plant for fall: Aug 2 to Aug 16
Sow outdoors: Apr 29 to May 20Plant for fall: Aug 16 to Sep 6
Sow outdoors: May 20 to Jun 10Plant for fall: Jul 26 to Aug 9
Sow outdoors: May 20 to Jun 3
Transplant outside: May 27 to Jun 17
Plant for fall: Sep 27 to Nov 1
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Force, PA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 18 – Mar 4 | Apr 15 – Apr 29 | — | — |
| Peppers | Mar 4 – Mar 18 | May 27 – Jun 10 | — | — |
| Eggplant | Mar 4 – Mar 18 | May 27 – Jun 10 | — | — |
| Tomatoes | Mar 18 – Apr 1 | May 20 – Jun 3 | — | — |
| Lettuce | Mar 18 – Apr 1 | Apr 22 – May 6 | Apr 15 – May 20 | Aug 16 – Sep 13 |
| Kale | Mar 18 – Apr 1 | Apr 15 – Apr 29 | Apr 15 – Apr 29 | Aug 2 – Aug 23 |
| Broccoli | Mar 18 – Apr 1 | Apr 29 – May 13 | — | Jul 5 – Jul 26 |
| Cabbage | Mar 18 – Apr 1 | Apr 22 – May 6 | — | Jul 5 – Jul 26 |
| Cauliflower | Mar 18 – Apr 1 | Apr 29 – May 13 | — | Jul 5 – Jul 26 |
| Okra | Apr 1 – Apr 15 | Jun 3 – Jun 17 | Jun 3 – Jun 17 | — |
| Basil | Apr 1 – Apr 15 | May 20 – Jun 3 | — | — |
| Peas | — | — | Apr 1 – Apr 22 | Jul 19 – Aug 9 |
| Spinach | — | — | Apr 1 – Apr 22 | Aug 16 – Sep 6 |
| Radishes | — | — | Apr 8 – May 20 | Aug 30 – Sep 20 |
| Cucumbers | Apr 15 – Apr 22 | May 27 – Jun 3 | May 20 – Jun 3 | Jul 26 – Aug 9 |
| Zucchini & Summer Squash | Apr 15 – Apr 22 | — | May 20 – Jun 3 | Aug 2 – Aug 16 |
| Winter Squash & Pumpkins | Apr 15 – Apr 22 | — | May 20 – Jun 3 | — |
| Melons & Watermelon | Apr 15 – Apr 22 | May 27 – Jun 10 | — | — |
| Carrots | — | — | Apr 22 – May 20 | Jul 19 – Aug 2 |
| Beets | — | — | Apr 22 – May 20 | Aug 2 – Aug 16 |
| Potatoes | — | — | Apr 22 – May 13 | — |
| Swiss Chard | — | — | Apr 29 – May 27 | Aug 2 – Aug 16 |
| Cilantro | — | — | Apr 29 – May 20 | Aug 16 – Sep 6 |
| Green Beans | — | — | May 20 – Jun 10 | Jul 26 – Aug 9 |
| Sweet Corn | — | — | May 20 – Jun 3 | — |
| Sweet Potatoes | — | May 27 – Jun 17 | — | — |
| Garlic | — | — | — | Sep 27 – Nov 1 |
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 Ridgway, PA weather station, 25 km away (elevation 1,362 ft (415 m)).
Frost dates near Force
- Weedville May 4 · Oct 11
- Byrnedale May 13 · Oct 11
- Penfield May 4 · Oct 11
- Dagus Mines May 13 · Oct 11
- Kersey May 13 · Oct 11
- Brandy Camp May 13 · Oct 11
- Brockport May 13 · Oct 11
- Benezett May 7 · Oct 15
- Saint Marys May 14 · Oct 6
- Ridgway May 13 · Oct 11
Frequently asked questions
When is the last frost in Force, PA?
The median last spring frost in Force, PA is May 13. There is still about a 10% chance of frost after May 28, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Force, PA?
The median first fall frost is October 11, with about a 10% chance of frost before September 28.
How long is the growing season in Force, PA?
About 151 days between the median last spring frost and first fall frost.
What planting zone is Force, PA?
Force, PA is in USDA hardiness zone 6a.