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Will it freeze in Oil City in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sun, Nov 8: 32°F (Sun, Nov 8, 6:00 PM EST to Mon, Nov 9, 6:00 AM EST).
Tonight: forecast low 45°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 45°F Above 36°F · Partly Cloudy
- Fri, Nov 6 36°F Frost possible · Rain Showers
- Sat, Nov 7 34°F Frost possible · Light Rain Likely
- Sun, Nov 8 32°F Freeze · Partly Cloudy
- Mon, Nov 9 34°F Frost possible · Partly Cloudy
- Tue, Nov 10 32°F Freeze · Partly Cloudy
- Wed, Nov 11 30°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 Oil City
The median first fall hard-freeze date (28°F) is November 3, from NOAA’s 1991–2020 Climate Normals at Franklin. 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 29 · May 13 · May 28 | Sep 29 · Oct 9 · Oct 23 | 149 days |
| 32°F freeze | Apr 20 · May 2 · May 20 | Oct 8 · Oct 23 · Nov 4 | 171 days |
| 28°F hard freeze | Apr 7 · Apr 21 · May 8 | Oct 22 · Nov 3 · Nov 15 | 195 days |
Average high temperature by month
1991–2020 normals at Franklin
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 Oil City, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Franklin (station USC00363028, elevation 1,015 ft), 6.6 mi from Oil 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 Oil City
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Franklin, PA | 7.5 mi | May 2 | Oct 23 |
| Titusville, PA | 14 mi | May 12 | Oct 10 |
| Grove City, PA | 27 mi | May 7 | Oct 14 |
| Meadville, PA | 27 mi | Apr 30 | Oct 23 |
| Corry, PA | 35 mi | May 7 | Oct 10 |
| Greenville, PA | 35 mi | May 4 | Oct 14 |
| Edinboro, PA | 37 mi | May 7 | Oct 10 |
| Butler, PA | 40 mi | May 7 | Oct 14 |
| Hermitage, PA | 40 mi | May 15 | Oct 3 |
| Warren, PA | 41 mi | May 4 | Oct 21 |
Frequently asked questions
When is the last frost in Oil City?
On average, the last spring frost (32°F) in Oil City is around May 2. In about 1 year in 10 it comes after May 20, and in 9 years in 10 it comes after April 20.
When is the first frost in Oil City?
The first fall frost (32°F) usually arrives around October 23. There’s a 10% chance of a freeze by October 8 and a 90% chance by November 4.
Can it frost in Oil 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 13.
What growing zone is Oil City?
Oil 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 16343. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze