Checking current alerts… View NWS forecast and alerts.
Will it freeze in York in the next 7 nights?
No overnight lows at or below 32°F are forecast in York during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 58°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
1 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 58°F Above 36°F · Light Rain Likely
- Fri, Nov 6 47°F Above 36°F · Partly Cloudy
- Sat, Nov 7 42°F Above 36°F · Partly Cloudy
- Sun, Nov 8 39°F Above 36°F · Mostly Clear
- Mon, Nov 9 38°F Above 36°F · Mostly Clear
- Tue, Nov 10 39°F Above 36°F · Mostly Clear
- Wed, Nov 11 36°F Frost possible · 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 York
The median first fall hard-freeze date (28°F) is October 31, from NOAA’s 1991–2020 Climate Normals at York 3 Ssw Pump Station. 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 23 · May 8 · May 24 | Sep 25 · Oct 8 · Oct 22 | 153 days |
| 32°F freeze | Apr 7 · Apr 26 · May 13 | Oct 5 · Oct 19 · Nov 1 | 177 days |
| 28°F hard freeze | Mar 24 · Apr 8 · Apr 26 | Oct 15 · Oct 31 · Nov 13 | 203 days |
Average high temperature by month
1991–2020 normals at York 3 Ssw Pump Station
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 York, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: York 3 Ssw Pump Station (station USC00369933, elevation 390 ft), 3.5 mi from York. 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 York
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| West York, PA | 1.9 mi | Apr 26 | Oct 19 |
| Red Lion, PA | 8.1 mi | Apr 26 | Oct 19 |
| Columbia, PA | 14 mi | Apr 30 | Oct 10 |
| Elizabethtown, PA | 15 mi | Apr 9 | Nov 2 |
| Mount Joy, PA | 16 mi | Apr 30 | Oct 10 |
| New Freedom, PA | 16 mi | Apr 19 | Oct 25 |
| Middletown, PA | 16 mi | Apr 9 | Nov 2 |
| Hanover, PA | 17 mi | Apr 24 | Oct 20 |
| Steelton, PA | 19 mi | Apr 9 | Nov 1 |
| New Cumberland, PA | 20 mi | Apr 9 | Nov 1 |
Frequently asked questions
When is the last frost in York?
On average, the last spring frost (32°F) in York is around April 26. In about 1 year in 10 it comes after May 13, and in 9 years in 10 it comes after April 7.
When is the first frost in York?
The first fall frost (32°F) usually arrives around October 19. There’s a 10% chance of a freeze by October 5 and a 90% chance by November 1.
Can it frost in York 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 May 8.
What growing zone is York?
York 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 17401. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · UV index today in York · frost vs. freeze