Frost dates 2026–2027

Frost dates for Braintree, Massachusetts

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Hingham, 4.8 mi away (close match).

Last spring frostApr 25
First fall frostOct 22
177 frost-free days
Last spring frostApr 251 year in 10 after May 8
First fall frostOct 221 year in 10 by Oct 6
Growing season177 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Braintree in the next 7 nights?

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

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.

2 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 Braintree

The median first fall hard-freeze date (28°F) is November 2, from NOAA’s 1991–2020 Climate Normals at Hingham. 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 26 · May 6 · May 20 Sep 28 · Oct 9 · Oct 24 154 days
32°F freeze Apr 13 · Apr 25 · May 8 Oct 6 · Oct 22 · Nov 5 177 days
28°F hard freeze Mar 29 · Apr 10 · Apr 24 Oct 19 · Nov 2 · Nov 16 205 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00193624. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Hingham

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 Braintree, MA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Hingham (station USC00193624, elevation 35 ft), 4.8 mi from Braintree. 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 Braintree

CityDistanceLast spring frostFirst fall frost
Weymouth, MA 3.1 mi Apr 25 Oct 22
Randolph, MA 3.1 mi Apr 18 Oct 26
Quincy, MA 3.7 mi Apr 25 Oct 22
Brockton, MA 8.7 mi Apr 22 Oct 19
Boston, MA 9.3 mi Apr 4 Nov 9
Winthrop, MA 12 mi Apr 4 Nov 9
Cambridge, MA 13 mi Apr 19 Oct 23
Chelsea, MA 13 mi Apr 4 Nov 9
Newton, MA 14 mi Apr 19 Oct 23
Somerville, MA 14 mi Apr 4 Nov 9

Frequently asked questions

When is the last frost in Braintree?

On average, the last spring frost (32°F) in Braintree is around April 25. In about 1 year in 10 it comes after May 8, and in 9 years in 10 it comes after April 13.

When is the first frost in Braintree?

The first fall frost (32°F) usually arrives around October 22. There’s a 10% chance of a freeze by October 6 and a 90% chance by November 5.

Can it frost in Braintree 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 6.

What growing zone is Braintree?

Braintree 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 02184. See growing zones in Massachusetts.

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