Clymer, PA frost dates
Last spring frostMay 8median date
First fall frostOct 13median date
Growing season158 daysfrost-free
Hardiness zone6aZone 6a
How Clymer compares
- In 8 years out of 10, the last spring frost in Clymer falls between April 23 and May 24, a 31-day window. The first fall frost falls between October 1 and October 27.
- The median last frost is 11 days later than the Pennsylvania median of Apr 27.
- Its 158-day growing season is longer than 20% of the 1,787 Pennsylvania places with a regular frost season (state median 175 days).
- The last frost is 9 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 131 nights a year at or below 32°F.
- Compared with Pittsburgh, PA, 88 km away, the last frost here is 14 days later than there and the growing season is 28 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 23 |
| 50% (median) | May 8 |
| 10% (safe for tender plants) | May 24 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 1 |
| 50% (median) | October 13 |
| 90% (late) | October 27 |
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 Clymer, PA
Clymer, PA frost dates — last frost May 8, first frost Oct 13, zone 6a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Feb 13 to Feb 27Transplant outside: Apr 10 to Apr 24
Start indoors: Feb 27 to Mar 13Transplant outside: May 22 to Jun 5
Start indoors: Feb 27 to Mar 13Transplant outside: May 22 to Jun 5
Start indoors: Mar 13 to Mar 27Transplant outside: May 15 to May 29
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 17 to May 1Sow outdoors: Apr 10 to May 15Plant for fall: Aug 18 to Sep 15
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 10 to Apr 24Sow outdoors: Apr 10 to Apr 24Plant for fall: Aug 4 to Aug 25
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 24 to May 8Plant for fall: Jul 7 to Jul 28
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 17 to May 1Plant for fall: Jul 7 to Jul 28
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 24 to May 8Plant for fall: Jul 7 to Jul 28
Start indoors: Mar 27 to Apr 10Transplant outside: May 29 to Jun 12Sow outdoors: May 29 to Jun 12
Start indoors: Mar 27 to Apr 10Transplant outside: May 15 to May 29
Sow outdoors: Mar 27 to Apr 17Plant for fall: Jul 21 to Aug 11
Sow outdoors: Mar 27 to Apr 17Plant for fall: Aug 18 to Sep 8
Sow outdoors: Apr 3 to May 15Plant for fall: Sep 1 to Sep 22
Start indoors: Apr 10 to Apr 17Transplant outside: May 22 to May 29Sow outdoors: May 15 to May 29Plant for fall: Jul 28 to Aug 11
Start indoors: Apr 10 to Apr 17Sow outdoors: May 15 to May 29Plant for fall: Aug 4 to Aug 18
Start indoors: Apr 10 to Apr 17Sow outdoors: May 15 to May 29
Start indoors: Apr 10 to Apr 17Transplant outside: May 22 to Jun 5
Sow outdoors: Apr 17 to May 15Plant for fall: Jul 21 to Aug 4
Sow outdoors: Apr 17 to May 15Plant for fall: Aug 4 to Aug 18
Sow outdoors: Apr 17 to May 8
Sow outdoors: Apr 24 to May 22Plant for fall: Aug 4 to Aug 18
Sow outdoors: Apr 24 to May 15Plant for fall: Aug 18 to Sep 8
Sow outdoors: May 15 to Jun 5Plant for fall: Jul 28 to Aug 11
Sow outdoors: May 15 to May 29
Transplant outside: May 22 to Jun 12
Plant for fall: Sep 29 to Nov 3
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Clymer, PA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 13 – Feb 27 | Apr 10 – Apr 24 | — | — |
| Peppers | Feb 27 – Mar 13 | May 22 – Jun 5 | — | — |
| Eggplant | Feb 27 – Mar 13 | May 22 – Jun 5 | — | — |
| Tomatoes | Mar 13 – Mar 27 | May 15 – May 29 | — | — |
| Lettuce | Mar 13 – Mar 27 | Apr 17 – May 1 | Apr 10 – May 15 | Aug 18 – Sep 15 |
| Kale | Mar 13 – Mar 27 | Apr 10 – Apr 24 | Apr 10 – Apr 24 | Aug 4 – Aug 25 |
| Broccoli | Mar 13 – Mar 27 | Apr 24 – May 8 | — | Jul 7 – Jul 28 |
| Cabbage | Mar 13 – Mar 27 | Apr 17 – May 1 | — | Jul 7 – Jul 28 |
| Cauliflower | Mar 13 – Mar 27 | Apr 24 – May 8 | — | Jul 7 – Jul 28 |
| Okra | Mar 27 – Apr 10 | May 29 – Jun 12 | May 29 – Jun 12 | — |
| Basil | Mar 27 – Apr 10 | May 15 – May 29 | — | — |
| Peas | — | — | Mar 27 – Apr 17 | Jul 21 – Aug 11 |
| Spinach | — | — | Mar 27 – Apr 17 | Aug 18 – Sep 8 |
| Radishes | — | — | Apr 3 – May 15 | Sep 1 – Sep 22 |
| Cucumbers | Apr 10 – Apr 17 | May 22 – May 29 | May 15 – May 29 | Jul 28 – Aug 11 |
| Zucchini & Summer Squash | Apr 10 – Apr 17 | — | May 15 – May 29 | Aug 4 – Aug 18 |
| Winter Squash & Pumpkins | Apr 10 – Apr 17 | — | May 15 – May 29 | — |
| Melons & Watermelon | Apr 10 – Apr 17 | May 22 – Jun 5 | — | — |
| Carrots | — | — | Apr 17 – May 15 | Jul 21 – Aug 4 |
| Beets | — | — | Apr 17 – May 15 | Aug 4 – Aug 18 |
| Potatoes | — | — | Apr 17 – May 8 | — |
| Swiss Chard | — | — | Apr 24 – May 22 | Aug 4 – Aug 18 |
| Cilantro | — | — | Apr 24 – May 15 | Aug 18 – Sep 8 |
| Green Beans | — | — | May 15 – Jun 5 | Jul 28 – Aug 11 |
| Sweet Corn | — | — | May 15 – May 29 | — |
| Sweet Potatoes | — | May 22 – Jun 12 | — | — |
| Garlic | — | — | — | Sep 29 – Nov 3 |
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 Indiana 3 Se, PA weather station, 12 km away (elevation 1,102 ft (336 m)).
Frost dates near Clymer
- Dixonville May 8 · Oct 13
- Penn Run May 8 · Oct 13
- Starford May 8 · Oct 13
- Commodore May 8 · Oct 13
- Heilwood May 8 · Oct 13
- Mentcle May 8 · Oct 13
- Marion Center May 8 · Oct 13
- Ernest May 8 · Oct 13
- Chambersville May 8 · Oct 13
- Indiana May 8 · Oct 13
Frequently asked questions
When is the last frost in Clymer, PA?
The median last spring frost in Clymer, PA is May 8. There is still about a 10% chance of frost after May 24, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Clymer, PA?
The median first fall frost is October 13, with about a 10% chance of frost before October 1.
How long is the growing season in Clymer, PA?
About 158 days between the median last spring frost and first fall frost.
What planting zone is Clymer, PA?
Clymer, PA is in USDA hardiness zone 6a.