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Will it freeze in Marietta in the next 7 nights?
No overnight lows at or below 32°F are forecast in Marietta during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 47°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
4 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 47°F Above 36°F · Partly Cloudy
- Fri, Nov 6 38°F Above 36°F · Slight Chance Light Rain then Partly Cloudy
- Sat, Nov 7 35°F Frost possible · Mostly Cloudy
- Sun, Nov 8 34°F Frost possible · Mostly Clear
- Mon, Nov 9 36°F Frost possible · Mostly Clear
- Tue, Nov 10 36°F Frost possible · Mostly Clear
- Wed, Nov 11 37°F Above 36°F · 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 Marietta
The median first fall hard-freeze date (28°F) is November 5, from NOAA’s 1991–2020 Climate Normals at Marietta Wastewater Plant. 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 16 · Apr 30 · May 17 | Oct 3 · Oct 16 · Oct 29 | 169 days |
| 32°F freeze | Apr 5 · Apr 18 · May 4 | Oct 13 · Oct 27 · Nov 6 | 191 days |
| 28°F hard freeze | Mar 22 · Apr 5 · Apr 19 | Oct 24 · Nov 5 · Nov 19 | 214 days |
Average high temperature by month
1991–2020 normals at Marietta Wastewater Plant
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 Marietta, OH come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Marietta Wastewater Plant (station USC00334927, elevation 610 ft), 1.2 mi from Marietta. 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 Marietta
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Vienna, WV | 8.1 mi | Apr 14 | Oct 30 |
| Parkersburg, WV | 12 mi | Apr 14 | Oct 30 |
| Belpre, OH | 12 mi | Apr 14 | Oct 30 |
| New Martinsville, WV | 35 mi | Apr 26 | Oct 26 |
| Athens, OH | 35 mi | Apr 25 | Oct 23 |
| Cambridge, OH | 42 mi | Apr 28 | Oct 17 |
| Zanesville, OH | 48 mi | Apr 26 | Oct 19 |
| Moundsville, WV | 51 mi | Apr 26 | Oct 21 |
| Logan, OH | 52 mi | Apr 30 | Oct 14 |
| Clarksburg, WV | 59 mi | Apr 22 | Oct 23 |
Frequently asked questions
When is the last frost in Marietta?
On average, the last spring frost (32°F) in Marietta is around April 18. In about 1 year in 10 it comes after May 4, and in 9 years in 10 it comes after April 5.
When is the first frost in Marietta?
The first fall frost (32°F) usually arrives around October 27. There’s a 10% chance of a freeze by October 13 and a 90% chance by November 6.
Can it frost in Marietta 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 April 30.
What growing zone is Marietta?
Marietta is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 45750. See growing zones in Ohio.
More: all Ohio frost dates · Ohio growing zones · frost vs. freeze