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Will it freeze in Penn Yan in the next 7 nights?
No overnight lows at or below 32°F are forecast in Penn Yan during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 49°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 49°F Above 36°F · Mostly Cloudy
- Fri, Nov 6 42°F Above 36°F · Rain Showers
- Sat, Nov 7 39°F Above 36°F · Rain Showers
- Sun, Nov 8 38°F Above 36°F · Chance Light Rain
- Mon, Nov 9 38°F Above 36°F · Partly Cloudy
- Tue, Nov 10 36°F Frost possible · Partly Cloudy
- Wed, Nov 11 33°F Frost possible · Mostly 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 Penn Yan
The median first fall hard-freeze date (28°F) is November 3, from NOAA’s 1991–2020 Climate Normals at Penn Yan Airport. 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 27 · May 10 · May 23 | Sep 24 · Oct 7 · Oct 22 | 149 days |
| 32°F freeze | Apr 18 · Apr 30 · May 14 | Oct 5 · Oct 22 · Nov 4 | 173 days |
| 28°F hard freeze | Apr 6 · Apr 18 · May 3 | Oct 19 · Nov 3 · Nov 16 | 198 days |
Average high temperature by month
1991–2020 normals at Penn Yan Airport
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 Penn Yan, NY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Penn Yan Airport (station USW00054778, elevation 903 ft), 1.2 mi from Penn Yan. 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 Penn Yan
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Geneva, NY | 14 mi | Apr 30 | Oct 21 |
| Canandaigua, NY | 19 mi | Apr 29 | Oct 22 |
| Bath, NY | 26 mi | May 12 | Oct 3 |
| Newark, NY | 27 mi | Apr 30 | Oct 21 |
| Auburn, NY | 31 mi | May 2 | Oct 18 |
| Ithaca, NY | 32 mi | May 11 | Oct 3 |
| Corning, NY | 35 mi | May 17 | Oct 2 |
| Horseheads, NY | 36 mi | May 9 | Oct 9 |
| Fairport, NY | 36 mi | May 2 | Oct 17 |
| East Rochester, NY | 38 mi | May 2 | Oct 17 |
Frequently asked questions
When is the last frost in Penn Yan?
On average, the last spring frost (32°F) in Penn Yan is around April 30. In about 1 year in 10 it comes after May 14, and in 9 years in 10 it comes after April 18.
When is the first frost in Penn Yan?
The first fall frost (32°F) usually arrives around October 22. There’s a 10% chance of a freeze by October 5 and a 90% chance by November 4.
Can it frost in Penn Yan 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 10.
What growing zone is Penn Yan?
Penn Yan is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 14527. See growing zones in New York.
More: all New York frost dates · New York growing zones · frost vs. freeze