Frost dates 2026–2027

Frost dates for Columbia Heights, Minnesota

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Lower St Anthony Falls, 4.9 mi away (close match).

Last spring frostApr 23
First fall frostOct 16
175 frost-free days
Last spring frostApr 231 year in 10 after May 7
First fall frostOct 161 year in 10 by Oct 2
Growing season175 daysbetween median 32°F dates
Hardiness zoneZone 5a−20 to −15°F average extreme low

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Will it freeze in Columbia Heights in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Fri, Nov 6: 30°F (Fri, Nov 6, 6:00 PM CST to Sat, Nov 7, 6:00 AM CST).

Tonight: forecast low 33°F. Frost possible.

NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.

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 Columbia Heights

The median first fall hard-freeze date (28°F) is October 27, from NOAA’s 1991–2020 Climate Normals at Lower St Anthony Falls. 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 20 · May 4 · May 21 Sep 23 · Oct 5 · Oct 20 154 days
32°F freeze Apr 10 · Apr 23 · May 7 Oct 2 · Oct 16 · Oct 30 175 days
28°F hard freeze Apr 2 · Apr 14 · Apr 27 Oct 12 · Oct 27 · Nov 9 195 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00214884. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Lower St Anthony Falls

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 Columbia Heights, MN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Lower St Anthony Falls (station USC00214884, elevation 754 ft), 4.9 mi from Columbia Heights. 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 Columbia Heights

CityDistanceLast spring frostFirst fall frost
St. Anthony, MN 1.9 mi Apr 28 Oct 8
New Brighton, MN 2.5 mi Apr 28 Oct 8
Fridley, MN 2.5 mi Apr 30 Oct 8
Brooklyn Center, MN 3.7 mi Apr 30 Oct 8
Arden Hills, MN 4.3 mi Apr 23 Oct 20
Mounds View, MN 4.3 mi Apr 23 Oct 20
Robbinsdale, MN 4.3 mi Apr 29 Oct 12
Spring Lake Park, MN 4.3 mi Apr 30 Oct 8
Roseville, MN 5.0 mi Apr 28 Oct 8
Falcon Heights, MN 5.6 mi Apr 28 Oct 8

Frequently asked questions

When is the last frost in Columbia Heights?

On average, the last spring frost (32°F) in Columbia Heights is around April 23. In about 1 year in 10 it comes after May 7, and in 9 years in 10 it comes after April 10.

When is the first frost in Columbia Heights?

The first fall frost (32°F) usually arrives around October 16. There’s a 10% chance of a freeze by October 2 and a 90% chance by October 30.

Can it frost in Columbia Heights 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 4.

What growing zone is Columbia Heights?

Columbia Heights 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 55421. See growing zones in Minnesota.

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