Frost dates 2026–2027

Frost dates for Kinnelon, New Jersey

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Charlotteburg Rsvr, 3.9 mi away (close match).

Last spring frostApr 25
First fall frostOct 17
174 frost-free days
Last spring frostApr 251 year in 10 after May 11
First fall frostOct 171 year in 10 by Oct 2
Growing season174 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Kinnelon in the next 7 nights?

No overnight lows at or below 32°F are forecast in Kinnelon during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 60°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.

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 Kinnelon

The median first fall hard-freeze date (28°F) is October 31, from NOAA’s 1991–2020 Climate Normals at Charlotteburg Rsvr. This is the 50% probability date, not a forecast for this year.

TemperatureLast 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 8 · May 24 Sep 25 · Oct 7 · Oct 21 151 days
32°F freeze Apr 12 · Apr 25 · May 11 Oct 2 · Oct 17 · Nov 3 174 days
28°F hard freeze Mar 30 · Apr 11 · Apr 26 Oct 14 · Oct 31 · Nov 15 201 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00281582. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Charlotteburg Rsvr

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 Kinnelon, NJ come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Charlotteburg Rsvr (station USC00281582, elevation 778 ft), 3.9 mi from Kinnelon. 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 Kinnelon

CityDistanceLast spring frostFirst fall frost
Butler, NJ 2.5 mi Apr 19 Oct 23
Bloomingdale, NJ 4.3 mi Apr 19 Oct 23
Pompton Lakes, NJ 5.6 mi Apr 19 Oct 23
Boonton, NJ 5.6 mi Apr 17 Oct 23
Lincoln Park, NJ 5.6 mi Apr 14 Oct 28
Wanaque, NJ 6.8 mi Apr 19 Oct 23
Oakland, NJ 8.1 mi Apr 19 Oct 23
Rockaway, NJ 9.3 mi Apr 17 Oct 23
Franklin Lakes, NJ 9.3 mi Apr 19 Oct 23
Totowa, NJ 9.9 mi Apr 15 Oct 28

Frequently asked questions

When is the last frost in Kinnelon?

On average, the last spring frost (32°F) in Kinnelon is around April 25. In about 1 year in 10 it comes after May 11, and in 9 years in 10 it comes after April 12.

When is the first frost in Kinnelon?

The first fall frost (32°F) usually arrives around October 17. There’s a 10% chance of a freeze by October 2 and a 90% chance by November 3.

Can it frost in Kinnelon 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 8.

What growing zone is Kinnelon?

Kinnelon 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 07405. See growing zones in New Jersey.

More: all New Jersey frost dates · New Jersey growing zones · frost vs. freeze