Roscoe, PA frost dates
Last spring frostApr 13median date
First fall frostNov 5median date
Growing season206 daysfrost-free
Hardiness zone6bZone 6b
How Roscoe compares
- In 8 years out of 10, the last spring frost in Roscoe falls between March 29 and May 5, a 37-day window. The first fall frost falls between October 25 and November 18.
- The median last frost is 14 days earlier than the Pennsylvania median of Apr 27.
- Its 206-day growing season is longer than 92% of the 1,787 Pennsylvania places with a regular frost season (state median 175 days).
- The last frost is 9 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 108 nights a year at or below 32°F.
- Compared with Pittsburgh, PA, 42 km away, the last frost here is 11 days earlier than there and the growing season is 20 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 29 |
| 50% (median) | April 13 |
| 10% (safe for tender plants) | May 5 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 25 |
| 50% (median) | November 5 |
| 90% (late) | November 18 |
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 Roscoe, PA
Roscoe, PA frost dates — last frost Apr 13, first frost Nov 5, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Jan 19 to Feb 2Transplant outside: Mar 16 to Mar 30
Start indoors: Feb 2 to Feb 16Transplant outside: Apr 27 to May 11
Start indoors: Feb 2 to Feb 16Transplant outside: Apr 27 to May 11
Start indoors: Feb 16 to Mar 2Transplant outside: Apr 20 to May 4
Start indoors: Feb 16 to Mar 2Transplant outside: Mar 23 to Apr 6Sow outdoors: Mar 16 to Apr 20Plant for fall: Sep 10 to Oct 8
Start indoors: Feb 16 to Mar 2Transplant outside: Mar 16 to Mar 30Sow outdoors: Mar 16 to Mar 30Plant for fall: Aug 27 to Sep 17
Start indoors: Feb 16 to Mar 2Transplant outside: Mar 30 to Apr 13Plant for fall: Jul 30 to Aug 20
Start indoors: Feb 16 to Mar 2Transplant outside: Mar 23 to Apr 6Plant for fall: Jul 30 to Aug 20
Start indoors: Feb 16 to Mar 2Transplant outside: Mar 30 to Apr 13Plant for fall: Jul 30 to Aug 20
Start indoors: Mar 2 to Mar 16Transplant outside: May 4 to May 18Sow outdoors: May 4 to May 18
Start indoors: Mar 2 to Mar 16Transplant outside: Apr 20 to May 4
Sow outdoors: Mar 2 to Mar 23Plant for fall: Aug 13 to Sep 3
Sow outdoors: Mar 2 to Mar 23Plant for fall: Sep 10 to Oct 1
Sow outdoors: Mar 9 to Apr 20Plant for fall: Sep 24 to Oct 15
Start indoors: Mar 16 to Mar 23Transplant outside: Apr 27 to May 4Sow outdoors: Apr 20 to May 4Plant for fall: Aug 20 to Sep 3
Start indoors: Mar 16 to Mar 23Sow outdoors: Apr 20 to May 4Plant for fall: Aug 27 to Sep 10
Start indoors: Mar 16 to Mar 23Sow outdoors: Apr 20 to May 4
Start indoors: Mar 16 to Mar 23Transplant outside: Apr 27 to May 11
Sow outdoors: Mar 23 to Apr 20Plant for fall: Aug 13 to Aug 27
Sow outdoors: Mar 23 to Apr 20Plant for fall: Aug 27 to Sep 10
Sow outdoors: Mar 23 to Apr 13
Sow outdoors: Mar 30 to Apr 27Plant for fall: Aug 27 to Sep 10
Sow outdoors: Mar 30 to Apr 20Plant for fall: Sep 10 to Oct 1
Sow outdoors: Apr 20 to May 11Plant for fall: Aug 20 to Sep 3
Sow outdoors: Apr 20 to May 4
Transplant outside: Apr 27 to May 18
Plant for fall: Oct 22 to Nov 26
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Roscoe, PA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 19 – Feb 2 | Mar 16 – Mar 30 | — | — |
| Peppers | Feb 2 – Feb 16 | Apr 27 – May 11 | — | — |
| Eggplant | Feb 2 – Feb 16 | Apr 27 – May 11 | — | — |
| Tomatoes | Feb 16 – Mar 2 | Apr 20 – May 4 | — | — |
| Lettuce | Feb 16 – Mar 2 | Mar 23 – Apr 6 | Mar 16 – Apr 20 | Sep 10 – Oct 8 |
| Kale | Feb 16 – Mar 2 | Mar 16 – Mar 30 | Mar 16 – Mar 30 | Aug 27 – Sep 17 |
| Broccoli | Feb 16 – Mar 2 | Mar 30 – Apr 13 | — | Jul 30 – Aug 20 |
| Cabbage | Feb 16 – Mar 2 | Mar 23 – Apr 6 | — | Jul 30 – Aug 20 |
| Cauliflower | Feb 16 – Mar 2 | Mar 30 – Apr 13 | — | Jul 30 – Aug 20 |
| Okra | Mar 2 – Mar 16 | May 4 – May 18 | May 4 – May 18 | — |
| Basil | Mar 2 – Mar 16 | Apr 20 – May 4 | — | — |
| Peas | — | — | Mar 2 – Mar 23 | Aug 13 – Sep 3 |
| Spinach | — | — | Mar 2 – Mar 23 | Sep 10 – Oct 1 |
| Radishes | — | — | Mar 9 – Apr 20 | Sep 24 – Oct 15 |
| Cucumbers | Mar 16 – Mar 23 | Apr 27 – May 4 | Apr 20 – May 4 | Aug 20 – Sep 3 |
| Zucchini & Summer Squash | Mar 16 – Mar 23 | — | Apr 20 – May 4 | Aug 27 – Sep 10 |
| Winter Squash & Pumpkins | Mar 16 – Mar 23 | — | Apr 20 – May 4 | — |
| Melons & Watermelon | Mar 16 – Mar 23 | Apr 27 – May 11 | — | — |
| Carrots | — | — | Mar 23 – Apr 20 | Aug 13 – Aug 27 |
| Beets | — | — | Mar 23 – Apr 20 | Aug 27 – Sep 10 |
| Potatoes | — | — | Mar 23 – Apr 13 | — |
| Swiss Chard | — | — | Mar 30 – Apr 27 | Aug 27 – Sep 10 |
| Cilantro | — | — | Mar 30 – Apr 20 | Sep 10 – Oct 1 |
| Green Beans | — | — | Apr 20 – May 11 | Aug 20 – Sep 3 |
| Sweet Corn | — | — | Apr 20 – May 4 | — |
| Sweet Potatoes | — | Apr 27 – May 18 | — | — |
| Garlic | — | — | — | Oct 22 – Nov 26 |
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 Charleroi Lock, PA weather station, 8 km away (elevation 748 ft (228 m)).
Frost dates near Roscoe
- Elco Apr 13 · Nov 5
- Stockdale Apr 13 · Nov 5
- Allenport Apr 13 · Nov 5
- Newell Apr 13 · Nov 5
- Coal Center Apr 13 · Nov 5
- California Apr 13 · Nov 5
- Fayette City Apr 13 · Nov 5
- Dunlevy Apr 13 · Nov 5
- Brownsville Apr 13 · Nov 5
- Pricedale Apr 27 · Oct 22
Frequently asked questions
When is the last frost in Roscoe, PA?
The median last spring frost in Roscoe, PA is April 13. There is still about a 10% chance of frost after May 5, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Roscoe, PA?
The median first fall frost is November 5, with about a 10% chance of frost before October 25.
How long is the growing season in Roscoe, PA?
About 206 days between the median last spring frost and first fall frost.
What planting zone is Roscoe, PA?
Roscoe, PA is in USDA hardiness zone 6b.