Frost dates 2026–2027

Frost dates for Hamburg, New York

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Colden 1W, 8.2 mi away (close match).

Last spring frostMay 4
First fall frostOct 17
166 frost-free days
Last spring frostMay 41 year in 10 after May 19
First fall frostOct 171 year in 10 by Oct 1
Growing season166 daysbetween median 32°F dates
Hardiness zoneZone 6a−10 to −5°F average extreme low

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Will it freeze in Hamburg in the next 7 nights?

No overnight lows at or below 32°F are forecast in Hamburg during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 50°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 Hamburg

The median first fall hard-freeze date (28°F) is November 1, from NOAA’s 1991–2020 Climate Normals at Colden 1W. 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 13 · May 27 Sep 21 · Oct 5 · Oct 19 145 days
32°F freeze Apr 21 · May 4 · May 19 Oct 1 · Oct 17 · Nov 3 166 days
28°F hard freeze Apr 10 · Apr 24 · May 9 Oct 16 · Nov 1 · Nov 16 192 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00301625. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Colden 1W

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 Hamburg, NY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Colden 1W (station USC00301625, elevation 1,535 ft), 8.2 mi from Hamburg. 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 Hamburg

CityDistanceLast spring frostFirst fall frost
Lackawanna, NY 6.8 mi Apr 24 Oct 26
East Aurora, NY 11 mi May 7 Oct 10
Buffalo, NY 12 mi Apr 24 Oct 26
Depew, NY 14 mi Apr 24 Oct 26
Lancaster, NY 15 mi Apr 24 Oct 26
Kenmore, NY 17 mi May 6 Oct 15
Williamsville, NY 17 mi Apr 24 Oct 26
Tonawanda, NY 20 mi May 6 Oct 15
North Tonawanda, NY 22 mi May 6 Oct 15
Niagara Falls, NY 27 mi Apr 26 Oct 25

Frequently asked questions

When is the last frost in Hamburg?

On average, the last spring frost (32°F) in Hamburg is around May 4. In about 1 year in 10 it comes after May 19, and in 9 years in 10 it comes after April 21.

When is the first frost in Hamburg?

The first fall frost (32°F) usually arrives around October 17. There’s a 10% chance of a freeze by October 1 and a 90% chance by November 3.

Can it frost in Hamburg 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 13.

What growing zone is Hamburg?

Hamburg is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 14075. See growing zones in New York.

More: all New York frost dates · New York growing zones · frost vs. freeze