Frost dates 2026–2027

Frost dates for Presque Isle, Maine

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Presque Isle, 2.5 mi away (close match).

Last spring frostMay 14
First fall frostSep 26
131 frost-free days
Last spring frostMay 141 year in 10 after Jun 1
First fall frostSep 261 year in 10 by Sep 10
Growing season131 daysbetween median 32°F dates
Hardiness zoneZone 4a−30 to −25°F average extreme low

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Will it freeze in Presque Isle in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Sun, Nov 8: 31°F (Sun, Nov 8, 6:00 PM EST to Mon, Nov 9, 6:00 AM EST).

Tonight: forecast low 53°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 Presque Isle

The median first fall hard-freeze date (28°F) is October 6, from NOAA’s 1991–2020 Climate Normals at Presque Isle. 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 14 · May 31 · Jun 17 Sep 1 · Sep 15 · Sep 28 106 days
32°F freeze Apr 30 · May 14 · Jun 1 Sep 10 · Sep 26 · Oct 9 131 days
28°F hard freeze Apr 20 · May 1 · May 16 Sep 21 · Oct 6 · Oct 25 157 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00176937. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Presque Isle

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 Presque Isle, ME come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Presque Isle (station USC00176937, elevation 599 ft), 2.5 mi from Presque Isle. 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 Presque Isle

CityDistanceLast spring frostFirst fall frost
Caribou, ME 11 mi May 7 Oct 1
Old Town, ME 125 mi May 13 Sep 28
Bangor, ME 134 mi May 4 Oct 4
Brewer, ME 136 mi May 4 Oct 4
Ellsworth, ME 147 mi May 8 Oct 9
Belfast, ME 164 mi May 7 Oct 5
Waterville, ME 168 mi May 2 Oct 10
Augusta, ME 183 mi Apr 27 Oct 16
Rockland, ME 186 mi Apr 27 Oct 19
Gardiner, ME 193 mi May 1 Oct 11

Frequently asked questions

When is the last frost in Presque Isle?

On average, the last spring frost (32°F) in Presque Isle is around May 14. In about 1 year in 10 it comes after June 1, and in 9 years in 10 it comes after April 30.

When is the first frost in Presque Isle?

The first fall frost (32°F) usually arrives around September 26. There’s a 10% chance of a freeze by September 10 and a 90% chance by October 9.

Can it frost in Presque Isle 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 31.

What growing zone is Presque Isle?

Presque Isle is in USDA Plant Hardiness Zone 4a (average annual extreme minimum temperature −30 to −25°F), based on the 2023 USDA map for ZIP code 04769. See growing zones in Maine.

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