Osceola, PA frost dates
Last spring frostMay 14median date
First fall frostOct 5median date
Growing season144 daysfrost-free
Hardiness zone5bZone 5b
How Osceola compares
- In 8 years out of 10, the last spring frost in Osceola falls between April 28 and May 28, a 30-day window. The first fall frost falls between September 23 and October 21.
- The median last frost is 17 days later than the Pennsylvania median of Apr 27.
- Its 144-day growing season is longer than 8% of the 1,787 Pennsylvania places with a regular frost season (state median 175 days).
- The last frost is 13 days later than the zone 5b median of May 1. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5b chart.
- The weather station records an average of 165 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 28 |
| 50% (median) | May 14 |
| 10% (safe for tender plants) | May 28 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 23 |
| 50% (median) | October 5 |
| 90% (late) | October 21 |
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 Osceola, PA
Osceola, PA frost dates — last frost May 14, first frost Oct 5, zone 5b. whenisthelastfrost.com
Crop
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Start indoors: Feb 19 to Mar 5Transplant outside: Apr 16 to Apr 30
Start indoors: Mar 5 to Mar 19Transplant outside: May 28 to Jun 11
Start indoors: Mar 5 to Mar 19Transplant outside: May 28 to Jun 11
Start indoors: Mar 19 to Apr 2Transplant outside: May 21 to Jun 4
Start indoors: Mar 19 to Apr 2Transplant outside: Apr 23 to May 7Sow outdoors: Apr 16 to May 21Plant for fall: Aug 10 to Sep 7
Start indoors: Mar 19 to Apr 2Transplant outside: Apr 16 to Apr 30Sow outdoors: Apr 16 to Apr 30Plant for fall: Jul 27 to Aug 17
Start indoors: Mar 19 to Apr 2Transplant outside: Apr 30 to May 14Plant for fall: Jun 29 to Jul 20
Start indoors: Mar 19 to Apr 2Transplant outside: Apr 23 to May 7Plant for fall: Jun 29 to Jul 20
Start indoors: Mar 19 to Apr 2Transplant outside: Apr 30 to May 14Plant for fall: Jun 29 to Jul 20
Start indoors: Apr 2 to Apr 16Transplant outside: Jun 4 to Jun 18Sow outdoors: Jun 4 to Jun 18
Start indoors: Apr 2 to Apr 16Transplant outside: May 21 to Jun 4
Sow outdoors: Apr 2 to Apr 23Plant for fall: Jul 13 to Aug 3
Sow outdoors: Apr 2 to Apr 23Plant for fall: Aug 10 to Aug 31
Sow outdoors: Apr 9 to May 21Plant for fall: Aug 24 to Sep 14
Start indoors: Apr 16 to Apr 23Transplant outside: May 28 to Jun 4Sow outdoors: May 21 to Jun 4Plant for fall: Jul 20 to Aug 3
Start indoors: Apr 16 to Apr 23Sow outdoors: May 21 to Jun 4Plant for fall: Jul 27 to Aug 10
Start indoors: Apr 16 to Apr 23Sow outdoors: May 21 to Jun 4
Start indoors: Apr 16 to Apr 23Transplant outside: May 28 to Jun 11
Sow outdoors: Apr 23 to May 21Plant for fall: Jul 13 to Jul 27
Sow outdoors: Apr 23 to May 21Plant for fall: Jul 27 to Aug 10
Sow outdoors: Apr 23 to May 14
Sow outdoors: Apr 30 to May 28Plant for fall: Jul 27 to Aug 10
Sow outdoors: Apr 30 to May 21Plant for fall: Aug 10 to Aug 31
Sow outdoors: May 21 to Jun 11Plant for fall: Jul 20 to Aug 3
Sow outdoors: May 21 to Jun 4
Transplant outside: May 28 to Jun 18
Plant for fall: Sep 21 to Oct 26
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Osceola, PA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 19 – Mar 5 | Apr 16 – Apr 30 | — | — |
| Peppers | Mar 5 – Mar 19 | May 28 – Jun 11 | — | — |
| Eggplant | Mar 5 – Mar 19 | May 28 – Jun 11 | — | — |
| Tomatoes | Mar 19 – Apr 2 | May 21 – Jun 4 | — | — |
| Lettuce | Mar 19 – Apr 2 | Apr 23 – May 7 | Apr 16 – May 21 | Aug 10 – Sep 7 |
| Kale | Mar 19 – Apr 2 | Apr 16 – Apr 30 | Apr 16 – Apr 30 | Jul 27 – Aug 17 |
| Broccoli | Mar 19 – Apr 2 | Apr 30 – May 14 | — | Jun 29 – Jul 20 |
| Cabbage | Mar 19 – Apr 2 | Apr 23 – May 7 | — | Jun 29 – Jul 20 |
| Cauliflower | Mar 19 – Apr 2 | Apr 30 – May 14 | — | Jun 29 – Jul 20 |
| Okra | Apr 2 – Apr 16 | Jun 4 – Jun 18 | Jun 4 – Jun 18 | — |
| Basil | Apr 2 – Apr 16 | May 21 – Jun 4 | — | — |
| Peas | — | — | Apr 2 – Apr 23 | Jul 13 – Aug 3 |
| Spinach | — | — | Apr 2 – Apr 23 | Aug 10 – Aug 31 |
| Radishes | — | — | Apr 9 – May 21 | Aug 24 – Sep 14 |
| Cucumbers | Apr 16 – Apr 23 | May 28 – Jun 4 | May 21 – Jun 4 | Jul 20 – Aug 3 |
| Zucchini & Summer Squash | Apr 16 – Apr 23 | — | May 21 – Jun 4 | Jul 27 – Aug 10 |
| Winter Squash & Pumpkins | Apr 16 – Apr 23 | — | May 21 – Jun 4 | — |
| Melons & Watermelon | Apr 16 – Apr 23 | May 28 – Jun 11 | — | — |
| Carrots | — | — | Apr 23 – May 21 | Jul 13 – Jul 27 |
| Beets | — | — | Apr 23 – May 21 | Jul 27 – Aug 10 |
| Potatoes | — | — | Apr 23 – May 14 | — |
| Swiss Chard | — | — | Apr 30 – May 28 | Jul 27 – Aug 10 |
| Cilantro | — | — | Apr 30 – May 21 | Aug 10 – Aug 31 |
| Green Beans | — | — | May 21 – Jun 11 | Jul 20 – Aug 3 |
| Sweet Corn | — | — | May 21 – Jun 4 | — |
| Sweet Potatoes | — | May 28 – Jun 18 | — | — |
| Garlic | — | — | — | Sep 21 – Oct 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 Addison, NY weather station, 16 km away (elevation 1,001 ft (305 m)).
Frost dates near Osceola
- Elkland May 9 · Oct 12
- Knoxville May 14 · Oct 5
- Nelson May 9 · Oct 12
- Middlebury Center May 6 · Oct 10
- Westfield May 10 · Oct 5
- Tioga May 6 · Oct 10
- Lawrenceville May 9 · Oct 12
- Harrison Valley May 20 · Sep 29
- Sabinsville May 10 · Oct 5
- Wellsboro May 10 · Oct 5
Frequently asked questions
When is the last frost in Osceola, PA?
The median last spring frost in Osceola, PA is May 14. 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 Osceola, PA?
The median first fall frost is October 5, with about a 10% chance of frost before September 23.
How long is the growing season in Osceola, PA?
About 144 days between the median last spring frost and first fall frost.
What planting zone is Osceola, PA?
Osceola, PA is in USDA hardiness zone 5b.