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Will it freeze in Keyport in the next 7 nights?
No overnight lows at or below 32°F are forecast in Keyport during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 62°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 62°F Above 36°F · Light Rain Likely
- Fri, Nov 6 52°F Above 36°F · Chance Light Rain
- Sat, Nov 7 45°F Above 36°F · Partly Cloudy
- Sun, Nov 8 42°F Above 36°F · Mostly Clear
- Mon, Nov 9 41°F Above 36°F · Mostly Clear
- Tue, Nov 10 42°F Above 36°F · Mostly Clear
- Wed, Nov 11 39°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 Keyport
The median first fall hard-freeze date (28°F) is November 3, from NOAA’s 1991–2020 Climate Normals at Freehold-Marlboro. 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 · May 1 · May 18 | Oct 1 · Oct 12 · Oct 26 | 164 days |
| 32°F freeze | Apr 2 · Apr 17 · May 6 | Oct 9 · Oct 23 · Nov 7 | 190 days |
| 28°F hard freeze | Mar 19 · Apr 2 · Apr 19 | Oct 18 · Nov 3 · Nov 20 | 214 days |
Average high temperature by month
1991–2020 normals at Freehold-Marlboro
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 Keyport, NJ come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Freehold-Marlboro (station USC00283181, elevation 194 ft), 8.6 mi from Keyport. 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 Keyport
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Union Beach, NJ | 1.9 mi | Apr 17 | Oct 23 |
| Matawan, NJ | 2.5 mi | Apr 17 | Oct 23 |
| Keansburg, NJ | 2.5 mi | Apr 17 | Oct 23 |
| South Amboy, NJ | 5.6 mi | Apr 15 | Oct 26 |
| Sayreville, NJ | 6.8 mi | Apr 15 | Oct 26 |
| Perth Amboy, NJ | 6.8 mi | Apr 15 | Oct 26 |
| Red Bank, NJ | 9.3 mi | Apr 9 | Nov 3 |
| South River, NJ | 9.3 mi | Apr 15 | Oct 26 |
| Fair Haven, NJ | 9.9 mi | Apr 9 | Nov 3 |
| Spotswood, NJ | 11 mi | Apr 15 | Oct 26 |
Frequently asked questions
When is the last frost in Keyport?
On average, the last spring frost (32°F) in Keyport is around April 17. In about 1 year in 10 it comes after May 6, and in 9 years in 10 it comes after April 2.
When is the first frost in Keyport?
The first fall frost (32°F) usually arrives around October 23. There’s a 10% chance of a freeze by October 9 and a 90% chance by November 7.
Can it frost in Keyport 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 1.
What growing zone is Keyport?
Keyport is in USDA Plant Hardiness Zone 7b (average annual extreme minimum temperature 5 to 10°F), based on the 2023 USDA map for ZIP code 07730. See growing zones in New Jersey.
More: all New Jersey frost dates · New Jersey growing zones · frost vs. freeze