Frost dates 2026–2027

Frost dates for St. Albans, Vermont

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at St Albans Radio, 3.3 mi away (close match).

Last spring frostMay 1
First fall frostOct 12
161 frost-free days
Last spring frostMay 11 year in 10 after May 16
First fall frostOct 121 year in 10 by Sep 28
Growing season161 daysbetween median 32°F dates
Hardiness zoneZone 5a−20 to −15°F average extreme low

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Will it freeze in St. Albans 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 51°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 St. Albans

The median first fall hard-freeze date (28°F) is October 23, from NOAA’s 1991–2020 Climate Normals at St Albans Radio. 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 29 · May 12 · May 26 Sep 18 · Oct 2 · Oct 15 142 days
32°F freeze Apr 20 · May 1 · May 16 Sep 28 · Oct 12 · Oct 26 161 days
28°F hard freeze Apr 9 · Apr 21 · May 5 Oct 6 · Oct 23 · Nov 6 183 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00437032. How to read these probabilities.

Average high temperature by month

1991–2020 normals at St Albans Radio

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 St. Albans, VT come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: St Albans Radio (station USC00437032, elevation 380 ft), 3.3 mi from St. Albans. 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 St. Albans

CityDistanceLast spring frostFirst fall frost
Plattsburgh, NY 20 mi May 6 Oct 5
Essex Junction, VT 22 mi May 2 Oct 11
Winooski, VT 22 mi Apr 29 Oct 15
Burlington, VT 24 mi Apr 29 Oct 15
South Burlington, VT 26 mi Apr 29 Oct 15
Montpelier, VT 45 mi May 5 Oct 9
Barre, VT 51 mi May 16 Sep 29
Malone, NY 59 mi May 6 Oct 4
Rutland, VT 83 mi May 15 Sep 27
Massena, NY 89 mi May 8 Oct 1

Frequently asked questions

When is the last frost in St. Albans?

On average, the last spring frost (32°F) in St. Albans is around May 1. In about 1 year in 10 it comes after May 16, and in 9 years in 10 it comes after April 20.

When is the first frost in St. Albans?

The first fall frost (32°F) usually arrives around October 12. There’s a 10% chance of a freeze by September 28 and a 90% chance by October 26.

Can it frost in St. Albans 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 12.

What growing zone is St. Albans?

St. Albans is in USDA Plant Hardiness Zone 5a (average annual extreme minimum temperature −20 to −15°F), based on the 2023 USDA map for ZIP code 05478. See growing zones in Vermont.

More: all Vermont frost dates · Vermont growing zones · frost vs. freeze