Frost dates 2026–2027

Frost dates for Lowell, Massachusetts

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Lowell, 2.2 mi away (close match).

Last spring frostApr 30
First fall frostOct 10
164 frost-free days
Last spring frostApr 301 year in 10 after May 10
First fall frostOct 101 year in 10 by Sep 30
Growing season164 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Lowell in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Wed, Nov 11: 28°F (Wed, Nov 11, 6:00 PM EST to Thu, Nov 12, 6:00 AM EST).

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.

4 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 Lowell

The median first fall hard-freeze date (28°F) is October 22, from NOAA’s 1991–2020 Climate Normals at Lowell. 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 30 · May 9 · May 21 Sep 21 · Oct 1 · Oct 12 144 days
32°F freeze Apr 19 · Apr 30 · May 10 Sep 30 · Oct 10 · Oct 24 164 days
28°F hard freeze Apr 7 · Apr 18 · Apr 29 Oct 9 · Oct 22 · Nov 5 187 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00194313. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Lowell

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 Lowell, MA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Lowell (station USC00194313, elevation 110 ft), 2.2 mi from Lowell. 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 Lowell

CityDistanceLast spring frostFirst fall frost
Lawrence, MA 9.3 mi Apr 13 Oct 28
Methuen, MA 9.9 mi Apr 13 Oct 28
Nashua, NH 11 mi Apr 29 Oct 8
Woburn, MA 14 mi Apr 25 Oct 17
Haverhill, MA 16 mi May 1 Oct 12
Waltham, MA 18 mi Apr 28 Oct 10
Medford, MA 19 mi Apr 4 Nov 9
Melrose, MA 19 mi Apr 25 Oct 17
Peabody, MA 19 mi Apr 24 Oct 17
Malden, MA 20 mi Apr 4 Nov 9

Frequently asked questions

When is the last frost in Lowell?

On average, the last spring frost (32°F) in Lowell is around April 30. In about 1 year in 10 it comes after May 10, and in 9 years in 10 it comes after April 19.

When is the first frost in Lowell?

The first fall frost (32°F) usually arrives around October 10. There’s a 10% chance of a freeze by September 30 and a 90% chance by October 24.

Can it frost in Lowell 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 9.

What growing zone is Lowell?

Lowell 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 01851. See growing zones in Massachusetts.

More: all Massachusetts frost dates · Massachusetts growing zones · UV index today in Lowell · frost vs. freeze