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Will it freeze in Schuylkill Haven in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Wed, Nov 11: 30°F (Wed, Nov 11, 6:00 PM EST to Thu, Nov 12, 6:00 AM EST).
Tonight: forecast low 55°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
4 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 55°F Above 36°F · Light Rain Likely then Areas Of Fog
- Fri, Nov 6 44°F Above 36°F · Partly Cloudy
- Sat, Nov 7 39°F Above 36°F · Slight Chance Light Rain then Partly Cloudy
- Sun, Nov 8 35°F Frost possible · Mostly Clear
- Mon, Nov 9 33°F Frost possible · Mostly Clear
- Tue, Nov 10 34°F Frost possible · Mostly Clear
- Wed, Nov 11 30°F Freeze · Partly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Schuylkill Haven
The median first fall hard-freeze date (28°F) is November 3, from NOAA’s 1991–2020 Climate Normals at Hamburg. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Apr 16 · Apr 30 · May 16 | Oct 1 · Oct 13 · Oct 30 | 165 days |
| 32°F freeze | Apr 2 · Apr 16 · May 3 | Oct 9 · Oct 25 · Nov 7 | 189 days |
| 28°F hard freeze | Mar 20 · Apr 3 · Apr 17 | Oct 18 · Nov 3 · Nov 17 | 214 days |
Average high temperature by month
1991–2020 normals at Hamburg
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Schuylkill Haven, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Hamburg (station USC00363632, elevation 369 ft), 11 mi from Schuylkill Haven. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Schuylkill Haven
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Pottsville, PA | 4.3 mi | Apr 30 | Oct 22 |
| Mount Carmel, PA | 17 mi | Apr 27 | Oct 20 |
| Tamaqua, PA | 17 mi | Apr 30 | Oct 22 |
| Shamokin, PA | 23 mi | Apr 27 | Oct 20 |
| Wyomissing, PA | 23 mi | Apr 14 | Oct 29 |
| Reading, PA | 24 mi | Apr 14 | Oct 29 |
| Lebanon, PA | 24 mi | Apr 20 | Oct 25 |
| Hazleton, PA | 25 mi | Apr 30 | Oct 22 |
| Shillington, PA | 25 mi | Apr 14 | Oct 29 |
| West Hazleton, PA | 25 mi | Apr 30 | Oct 22 |
Frequently asked questions
When is the last frost in Schuylkill Haven?
On average, the last spring frost (32°F) in Schuylkill Haven is around April 16. In about 1 year in 10 it comes after May 3, and in 9 years in 10 it comes after April 2.
When is the first frost in Schuylkill Haven?
The first fall frost (32°F) usually arrives around October 25. There’s a 10% chance of a freeze by October 9 and a 90% chance by November 7.
Can it frost in Schuylkill Haven after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after April 30.
What growing zone is Schuylkill Haven?
Schuylkill Haven is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 17929. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze