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Will it freeze in Bernardsville in the next 7 nights?
No overnight lows at or below 32°F are forecast in Bernardsville during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 59°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
1 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 59°F Above 36°F · Light Rain
- Fri, Nov 6 49°F Above 36°F · Partly Cloudy
- Sat, Nov 7 43°F Above 36°F · Slight Chance Light Rain then Partly Cloudy
- Sun, Nov 8 39°F Above 36°F · Mostly Clear
- Mon, Nov 9 37°F Above 36°F · Mostly Clear
- Tue, Nov 10 39°F Above 36°F · Mostly Clear
- Wed, Nov 11 35°F Frost possible · Mostly Clear
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 Bernardsville
The median first fall hard-freeze date (28°F) is October 30, from NOAA’s 1991–2020 Climate Normals at Somerville Somerset Airport. 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 23 · May 7 · May 23 | Sep 27 · Oct 7 · Oct 21 | 152 days |
| 32°F freeze | Apr 11 · Apr 26 · May 13 | Oct 5 · Oct 18 · Nov 2 | 176 days |
| 28°F hard freeze | Mar 28 · Apr 11 · Apr 28 | Oct 14 · Oct 30 · Nov 13 | 202 days |
Average high temperature by month
1991–2020 normals at Somerville Somerset Airport
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 Bernardsville, NJ come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Somerville Somerset Airport (station USW00054785, elevation 105 ft), 8.4 mi from Bernardsville. 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 Bernardsville
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Morristown, NJ | 7.5 mi | Apr 18 | Oct 27 |
| Madison, NJ | 9.3 mi | Apr 18 | Oct 27 |
| Morris Plains, NJ | 9.9 mi | Apr 17 | Oct 23 |
| New Providence, NJ | 9.9 mi | Apr 18 | Oct 27 |
| Watchung, NJ | 9.9 mi | Apr 11 | Oct 28 |
| Florham Park, NJ | 11 mi | Apr 18 | Oct 27 |
| Dover, NJ | 11 mi | Apr 17 | Oct 23 |
| Chatham, NJ | 11 mi | Apr 18 | Oct 27 |
| North Plainfield, NJ | 11 mi | Apr 11 | Oct 28 |
| Somerville, NJ | 11 mi | Apr 30 | Oct 20 |
Frequently asked questions
When is the last frost in Bernardsville?
On average, the last spring frost (32°F) in Bernardsville is around April 26. In about 1 year in 10 it comes after May 13, and in 9 years in 10 it comes after April 11.
When is the first frost in Bernardsville?
The first fall frost (32°F) usually arrives around October 18. There’s a 10% chance of a freeze by October 5 and a 90% chance by November 2.
Can it frost in Bernardsville 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 7.
What growing zone is Bernardsville?
Bernardsville 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 07924. See growing zones in New Jersey.
More: all New Jersey frost dates · New Jersey growing zones · frost vs. freeze