Frost dates 2026–2027

Frost dates for Winnemucca, Nevada

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Winnemucca 3SSW, 2.2 mi away (close match).

Last spring frostMay 23
First fall frostSep 29
129 frost-free days
Last spring frostMay 231 year in 10 after Jun 14
First fall frostSep 291 year in 10 by Sep 14
Growing season129 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Winnemucca in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 25°F (Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST).

Tonight: forecast low 25°F. Hard freeze.

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

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 Winnemucca

The median first fall hard-freeze date (28°F) is October 7, from NOAA’s 1991–2020 Climate Normals at Winnemucca 3SSW. 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 19 · Jun 5 · Jun 21 Sep 3 · Sep 17 · Oct 1 104 days
32°F freeze May 4 · May 23 · Jun 14 Sep 14 · Sep 29 · Oct 12 129 days
28°F hard freeze Apr 20 · May 7 · May 31 Sep 25 · Oct 7 · Oct 23 153 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00269168. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Winnemucca 3SSW

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 Winnemucca, NV come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Winnemucca 3SSW (station USC00269168, elevation 4,355 ft), 2.2 mi from Winnemucca. 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 Winnemucca

CityDistanceLast spring frostFirst fall frost
Elko, NV 103 mi May 29 Sep 18
Fallon, NV 117 mi May 12 Oct 1
Fernley, NV 124 mi Apr 18 Oct 25
Sparks, NV 142 mi May 1 Oct 10
Reno, NV 149 mi Apr 28 Oct 27
Susanville, CA 157 mi May 16 Oct 8
Carson City, NV 165 mi May 4 Oct 6
Truckee, CA 171 mi Jun 9 Sep 25
Mountain Home, ID 182 mi May 2 Oct 8
South Lake Tahoe, CA 185 mi Jun 7 Sep 28

Frequently asked questions

When is the last frost in Winnemucca?

On average, the last spring frost (32°F) in Winnemucca is around May 23. In about 1 year in 10 it comes after June 14, and in 9 years in 10 it comes after May 4.

When is the first frost in Winnemucca?

The first fall frost (32°F) usually arrives around September 29. There’s a 10% chance of a freeze by September 14 and a 90% chance by October 12.

Can it frost in Winnemucca 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 June 5.

What growing zone is Winnemucca?

Winnemucca is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 89446. See growing zones in Nevada.

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