Frost dates 2026–2027

Frost dates for New Richmond, Wisconsin

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Stillwater 1 SE, 13 mi away (close match).

Last spring frostApr 22
First fall frostOct 19
178 frost-free days
Last spring frostApr 221 year in 10 after May 6
First fall frostOct 191 year in 10 by Oct 3
Growing season178 daysbetween median 32°F dates
Hardiness zoneZone 4b−25 to −20°F average extreme low

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Will it freeze in New Richmond in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 30°F (Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST).

Tonight: forecast low 30°F. Freeze.

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

7 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 New Richmond

The median first fall hard-freeze date (28°F) is October 30, from NOAA’s 1991–2020 Climate Normals at Stillwater 1 SE. 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 19 · May 2 · May 17 Sep 25 · Oct 8 · Oct 23 158 days
32°F freeze Apr 7 · Apr 22 · May 6 Oct 3 · Oct 19 · Nov 3 178 days
28°F hard freeze Mar 31 · Apr 12 · Apr 27 Oct 15 · Oct 30 · Nov 11 199 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00218037. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Stillwater 1 SE

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 New Richmond, WI come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Stillwater 1 SE (station USC00218037, elevation 710 ft), 13 mi from New Richmond. 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 New Richmond

CityDistanceLast spring frostFirst fall frost
Hudson, WI 14 mi Apr 22 Oct 19
Stillwater, MN 14 mi Apr 30 Oct 11
River Falls, WI 19 mi May 11 Oct 1
Lake Elmo, MN 20 mi Apr 30 Oct 11
Hugo, MN 21 mi Apr 30 Oct 11
Mahtomedi, MN 21 mi Apr 30 Oct 11
Forest Lake, MN 22 mi May 3 Oct 5
Oakdale, MN 22 mi Apr 26 Oct 12
White Bear Lake, MN 23 mi Apr 23 Oct 20
Lindstrom, MN 23 mi May 3 Oct 5

Frequently asked questions

When is the last frost in New Richmond?

On average, the last spring frost (32°F) in New Richmond is around April 22. In about 1 year in 10 it comes after May 6, and in 9 years in 10 it comes after April 7.

When is the first frost in New Richmond?

The first fall frost (32°F) usually arrives around October 19. There’s a 10% chance of a freeze by October 3 and a 90% chance by November 3.

Can it frost in New Richmond 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 2.

What growing zone is New Richmond?

New Richmond is in USDA Plant Hardiness Zone 4b (average annual extreme minimum temperature −25 to −20°F), based on the 2023 USDA map for ZIP code 54017. See growing zones in Wisconsin.

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