Frost dates 2026–2027

Frost dates for Pittsfield, Massachusetts

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

Last spring frostMay 5
First fall frostOct 5
152 frost-free days
Last spring frostMay 51 year in 10 after May 21
First fall frostOct 51 year in 10 by Sep 23
Growing season152 daysbetween median 32°F dates
Hardiness zoneZone 5b−15 to −10°F average extreme low

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Will it freeze in Pittsfield in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Sun, Nov 8: 32°F (Sun, Nov 8, 6:00 PM EST to Mon, Nov 9, 6:00 AM EST).

Tonight: forecast low 56°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 Pittsfield

The median first fall hard-freeze date (28°F) is October 18, from NOAA’s 1991–2020 Climate Normals at Pittsfield Municipal Airport. 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 May 4 · May 19 · Jun 2 Sep 12 · Sep 26 · Oct 7 129 days
32°F freeze Apr 23 · May 5 · May 21 Sep 23 · Oct 5 · Oct 22 152 days
28°F hard freeze Apr 8 · Apr 23 · May 9 Oct 2 · Oct 18 · Nov 4 177 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014763. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Pittsfield Municipal 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 Pittsfield, MA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Pittsfield Municipal Airport (station USW00014763, elevation 1,194 ft), 2.2 mi from Pittsfield. 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 Pittsfield

CityDistanceLast spring frostFirst fall frost
North Adams, MA 17 mi May 10 Oct 4
Rensselaer, NY 27 mi Apr 19 Oct 26
Troy, NY 29 mi Apr 19 Oct 26
Watervliet, NY 30 mi Apr 19 Oct 26
Hudson, NY 30 mi Apr 25 Oct 18
Albany, NY 31 mi Apr 27 Oct 15
Northampton, MA 31 mi May 5 Oct 8
Cohoes, NY 32 mi Apr 19 Oct 26
Easthampton, MA 33 mi May 3 Oct 8
Westfield, MA 34 mi May 3 Oct 8

Frequently asked questions

When is the last frost in Pittsfield?

On average, the last spring frost (32°F) in Pittsfield is around May 5. In about 1 year in 10 it comes after May 21, and in 9 years in 10 it comes after April 23.

When is the first frost in Pittsfield?

The first fall frost (32°F) usually arrives around October 5. There’s a 10% chance of a freeze by September 23 and a 90% chance by October 22.

Can it frost in Pittsfield 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 19.

What growing zone is Pittsfield?

Pittsfield is in USDA Plant Hardiness Zone 5b (average annual extreme minimum temperature −15 to −10°F), based on the 2023 USDA map for ZIP code 01201. See growing zones in Massachusetts.

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