Frost dates for 15828Clarington, PA
The average last spring frost in Clarington is May 13 and the average first fall frost is October 7, giving a typical growing season of about 143 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 13
- Average first fall frost
- Oct 7
- Growing season
- 143 days
Safer after May 28 (1-in-10 risk)
Possible by Sep 27 (1-in-10 risk)
Last frost typically in 191 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | May 11 · May 26 · Jun 7 | Sep 12 · Sep 27 · Oct 7 | 122 days | 100% |
| Frost / freeze (32°F) | Apr 28 · May 13 · May 28 | Sep 27 · Oct 7 · Oct 20 | 143 days | 100% |
| Hard freeze (28°F) | Apr 17 · May 2 · May 20 | Oct 4 · Oct 20 · Nov 3 | 169 days | 100% |
Planting calendar for Clarington
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Apr 12 – Jun 18 |
| Tomatoes | Transplant outdoors | May 29 – Jun 17 |
| Peppers | Start seeds indoors | Apr 12 – May 13 |
| Peppers | Transplant outdoors | Jun 12 – Jul 13 |
| Eggplant | Start seeds indoors | Apr 29 – May 28 |
| Eggplant | Transplant outdoors | Jun 12 – Jul 13 |
| Cucumbers | Sow outdoors | Jun 12 – Jun 27 |
| Summer squash | Sow outdoors | May 29 – Jul 13 |
| Winter squash & pumpkins | Sow outdoors | Jun 12 – Jul 13 |
| Snap beans | Sow outdoors | May 29 – Jul 20 |
| Sweet corn | Sow outdoors | May 29 – Jun 17 |
| Watermelon & cantaloupe | Sow outdoors | Jun 12 – Jul 13 |
| Okra | Sow outdoors | Jun 5 – Jun 28 |
| Peas | Sow outdoors (spring) | Apr 12 – May 28 |
| Potatoes | Plant outdoors (spring) | Apr 12 – Jun 12 |
| Onions | Start seeds indoors (spring) | Mar 1 – Mar 28 |
| Onions | Transplant outdoors (spring) | Apr 29 – May 28 |
| Broccoli | Start seeds indoors (spring) | Mar 25 – Apr 28 |
| Broccoli | Transplant outdoors (spring) | Apr 29 – May 28 |
| Broccoli | Start seeds indoors (fall) | Jun 7 – Jun 17 |
| Broccoli | Transplant outdoors (fall) | Jul 7 – Jul 18 |
| Cabbage | Start seeds indoors (spring) | Mar 15 – Apr 12 |
| Cabbage | Transplant outdoors (spring) | Apr 12 – May 13 |
| Cabbage | Start seeds indoors (fall) | May 28 – Jun 27 |
| Cabbage | Transplant outdoors (fall) | Jun 27 – Jul 28 |
| Leaf lettuce | Sow outdoors (spring) | Apr 12 – Jun 28 |
| Leaf lettuce | Sow outdoors (fall) | Jun 27 – Aug 13 |
| Spinach | Sow outdoors (spring) | Apr 5 – May 19 |
| Spinach | Sow outdoors (fall) | Jul 14 – Aug 18 |
| Radishes | Sow outdoors (spring) | Apr 12 – Jun 2 |
| Radishes | Sow outdoors (fall) | Jun 27 – Aug 28 |
| Kale | Sow outdoors (spring) | Apr 29 – May 19 |
| Kale | Sow outdoors (fall) | Jun 20 – Jul 28 |
| Carrots | Sow outdoors (spring) | May 13 – Jun 28 |
| Carrots | Sow outdoors (fall) | May 28 – Jul 13 |
| Garlic | Plant outdoors (fall) | Sep 27 – Oct 28 |
Where these dates come from
ZIP code 15828 is matched to the NOAA station Cooksburg 2 Nw, PA, 6.9 km away, at 1,450 ft elevation (95 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Cooksburg 2 Nw, PA (used) | 1,450 ft | May 13 | Oct 7 |
| Dubois Jefferson Co Ap, PA | 1,814 ft | May 6 | Oct 14 |
| Clarion 3 Sw, PA | 1,040 ft | May 9 | Oct 11 |
| Tionesta 2 Se Lake, PA | 1,200 ft | May 1 | Oct 25 |
Frost dates near Clarington
- Cooksburg, PA 16217 · last May 13, first Oct 7
- Sigel, PA 15860 · last May 6, first Oct 14
- Fisher, PA 16225 · last May 13, first Oct 7
- Vowinckel, PA 16260 · last May 13, first Oct 7
- Crown, PA 16220 · last May 13, first Oct 7
- Leeper, PA 16233 · last May 13, first Oct 7
- Marienville, PA 16239 · last May 24, first Sep 28
- Tylersburg, PA 16361 · last May 13, first Oct 7
Frequently asked questions
- When is the last frost in Clarington, PA?
- For ZIP code 15828, the average last spring frost (32°F) is May 13, based on NOAA 1991-2020 climate normals for the Cooksburg 2 Nw, PA weather station. There is a 1-in-10 chance of a frost after May 28.
- When is the first frost in Clarington, PA?
- The average first fall frost (32°F) is October 7. There is a 1-in-10 chance of frost by September 27, so tender plants are at risk from that point on.
- How long is the growing season in 15828?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 143 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.