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Will it freeze in Grove City in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 32°F (Sat, Nov 7, 6:00 PM EST to Sun, Nov 8, 6:00 AM EST).
Tonight: forecast low 43°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
6 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 43°F Above 36°F · Partly Cloudy
- Fri, Nov 6 33°F Frost possible · Chance Rain Showers
- Sat, Nov 7 32°F Freeze · Light Rain Likely
- Sun, Nov 8 30°F Freeze · Partly Cloudy
- Mon, Nov 9 32°F Freeze · Mostly Clear
- Tue, Nov 10 30°F Freeze · Mostly Clear
- Wed, Nov 11 29°F Freeze · 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 Grove City
The median first fall hard-freeze date (28°F) is October 27, from NOAA’s 1991–2020 Climate Normals at Slippery Rock 1 Ssw. 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 | May 1 · May 20 · Jun 2 | Sep 17 · Oct 1 · Oct 15 | 135 days |
| 32°F freeze | Apr 22 · May 7 · May 25 | Oct 1 · Oct 14 · Oct 30 | 158 days |
| 28°F hard freeze | Apr 11 · Apr 26 · May 15 | Oct 10 · Oct 27 · Nov 10 | 183 days |
Average high temperature by month
1991–2020 normals at Slippery Rock 1 Ssw
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 Grove City, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Slippery Rock 1 Ssw (station USC00368184, elevation 1,260 ft), 7.1 mi from Grove City. 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 Grove City
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| New Castle, PA | 17 mi | Apr 30 | Oct 23 |
| Hermitage, PA | 19 mi | May 15 | Oct 3 |
| Franklin, PA | 21 mi | May 2 | Oct 23 |
| Sharon, PA | 22 mi | May 1 | Oct 17 |
| Butler, PA | 23 mi | May 7 | Oct 14 |
| Ellwood City, PA | 23 mi | Apr 27 | Oct 25 |
| Greenville, PA | 23 mi | May 4 | Oct 14 |
| Hubbard, OH | 25 mi | May 1 | Oct 17 |
| Campbell, OH | 27 mi | Apr 30 | Oct 23 |
| Struthers, OH | 27 mi | Apr 30 | Oct 23 |
Frequently asked questions
When is the last frost in Grove City?
On average, the last spring frost (32°F) in Grove City is around May 7. In about 1 year in 10 it comes after May 25, and in 9 years in 10 it comes after April 22.
When is the first frost in Grove City?
The first fall frost (32°F) usually arrives around October 14. There’s a 10% chance of a freeze by October 1 and a 90% chance by October 30.
Can it frost in Grove City 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 20.
What growing zone is Grove City?
Grove City 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 16127. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze