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Will it freeze in Warren in the next 7 nights?
No overnight lows at or below 32°F are forecast in Warren during the next 7 nights in the available NWS frost forecast.
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 · Mostly Cloudy
- Fri, Nov 6 36°F Frost possible · Chance Light Rain
- Sat, Nov 7 34°F Frost possible · Chance Light Rain then Mostly Cloudy
- Sun, Nov 8 33°F Frost possible · Slight Chance Light Rain
- Mon, Nov 9 36°F Frost possible · Mostly Clear
- Tue, Nov 10 34°F Frost possible · Mostly Clear
- Wed, Nov 11 33°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 Warren
The median first fall hard-freeze date (28°F) is October 26, from NOAA’s 1991–2020 Climate Normals at Warren 3 S. 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 2 · May 19 · Jun 3 | Sep 19 · Oct 2 · Oct 14 | 134 days |
| 32°F freeze | Apr 23 · May 8 · May 25 | Sep 30 · Oct 12 · Oct 26 | 157 days |
| 28°F hard freeze | Apr 13 · Apr 27 · May 15 | Oct 8 · Oct 26 · Nov 7 | 179 days |
Average high temperature by month
1991–2020 normals at Warren 3 S
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 Warren, OH come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Warren 3 S (station USC00338769, elevation 900 ft), 2.6 mi from Warren. 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 Warren
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Niles, OH | 5.0 mi | May 8 | Oct 12 |
| Girard, OH | 8.1 mi | May 1 | Oct 17 |
| Cortland, OH | 8.1 mi | Apr 30 | Oct 23 |
| Youngstown, OH | 13 mi | May 1 | Oct 17 |
| Hubbard, OH | 14 mi | May 1 | Oct 17 |
| Canfield, OH | 15 mi | May 8 | Oct 12 |
| Campbell, OH | 16 mi | Apr 30 | Oct 23 |
| Sharon, PA | 16 mi | May 1 | Oct 17 |
| Struthers, OH | 17 mi | Apr 30 | Oct 23 |
| Hermitage, PA | 19 mi | May 15 | Oct 3 |
Frequently asked questions
When is the last frost in Warren?
On average, the last spring frost (32°F) in Warren is around May 8. In about 1 year in 10 it comes after May 25, and in 9 years in 10 it comes after April 23.
When is the first frost in Warren?
The first fall frost (32°F) usually arrives around October 12. There’s a 10% chance of a freeze by September 30 and a 90% chance by October 26.
Can it frost in Warren 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 19.
What growing zone is Warren?
Warren 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 44485. See growing zones in Ohio.
More: all Ohio frost dates · Ohio growing zones · UV index today in Warren · frost vs. freeze