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Will it freeze in Norwalk in the next 7 nights?
No overnight lows at or below 32°F are forecast in Norwalk during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 44°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 44°F Above 36°F · Cloudy then Chance Light Rain
- Fri, Nov 6 37°F Above 36°F · Chance Light Rain
- Sat, Nov 7 33°F Frost possible · Mostly Cloudy
- Sun, Nov 8 35°F Frost possible · Partly Cloudy
- Mon, Nov 9 40°F Above 36°F · Mostly Clear
- Tue, Nov 10 36°F Frost possible · Mostly Clear
- Wed, Nov 11 38°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 Norwalk
The median first fall hard-freeze date (28°F) is November 5, from NOAA’s 1991–2020 Climate Normals at Norwalk 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 21 · May 4 · May 20 | Sep 30 · Oct 13 · Oct 27 | 160 days |
| 32°F freeze | Apr 11 · Apr 25 · May 9 | Oct 11 · Oct 25 · Nov 7 | 183 days |
| 28°F hard freeze | Mar 31 · Apr 12 · Apr 28 | Oct 22 · Nov 5 · Nov 20 | 206 days |
Average high temperature by month
1991–2020 normals at Norwalk 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 Norwalk, OH come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Norwalk Wastewater Plant (station USC00336118, elevation 670 ft), 1.6 mi from Norwalk. 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 Norwalk
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Huron, OH | 11 mi | Apr 10 | Nov 5 |
| Bellevue, OH | 12 mi | Apr 25 | Oct 25 |
| Willard, OH | 14 mi | Apr 25 | Oct 25 |
| Sandusky, OH | 16 mi | Apr 10 | Nov 5 |
| Vermilion, OH | 19 mi | Apr 24 | Oct 24 |
| Clyde, OH | 20 mi | Apr 26 | Oct 23 |
| Oberlin, OH | 21 mi | Apr 27 | Oct 22 |
| Amherst, OH | 22 mi | Apr 24 | Oct 24 |
| Shelby, OH | 25 mi | Apr 30 | Oct 15 |
| Port Clinton, OH | 25 mi | Apr 10 | Nov 5 |
Frequently asked questions
When is the last frost in Norwalk?
On average, the last spring frost (32°F) in Norwalk is around April 25. In about 1 year in 10 it comes after May 9, and in 9 years in 10 it comes after April 11.
When is the first frost in Norwalk?
The first fall frost (32°F) usually arrives around October 25. There’s a 10% chance of a freeze by October 11 and a 90% chance by November 7.
Can it frost in Norwalk 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 4.
What growing zone is Norwalk?
Norwalk 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 44857. See growing zones in Ohio.
More: all Ohio frost dates · Ohio growing zones · frost vs. freeze