Frost dates 2026–2027

Frost dates for Carson City, Nevada

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

Last spring frostMay 4
First fall frostOct 6
152 frost-free days
Last spring frostMay 41 year in 10 after May 29
First fall frostOct 61 year in 10 by Sep 24
Growing season152 daysbetween median 32°F dates
Hardiness zoneZone 7a0 to 5°F average extreme low

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Will it freeze in Carson City in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 31°F (Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST).

Tonight: forecast low 31°F. Freeze.

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

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 Carson City

The median first fall hard-freeze date (28°F) is October 18, from NOAA’s 1991–2020 Climate Normals at Carson City. 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 5 · May 26 · Jun 13 Sep 11 · Sep 26 · Oct 8 123 days
32°F freeze Apr 20 · May 4 · May 29 Sep 24 · Oct 6 · Oct 20 152 days
28°F hard freeze Apr 6 · Apr 20 · May 9 Oct 4 · Oct 18 · Nov 1 179 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00261485. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Carson City

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 Carson City, NV come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Carson City (station USC00261485, elevation 4,761 ft), 2.2 mi from Carson City. 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 Carson City

CityDistanceLast spring frostFirst fall frost
South Lake Tahoe, CA 20 mi Jun 7 Sep 28
Truckee, CA 27 mi Jun 9 Sep 25
Reno, NV 28 mi Apr 28 Oct 27
Sparks, NV 29 mi May 1 Oct 10
Fernley, NV 41 mi Apr 18 Oct 25
Fallon, NV 57 mi May 12 Oct 1
Placerville, CA 63 mi Mar 31 Nov 21
Grass Valley, CA 70 mi Apr 10 Nov 13
Auburn, CA 73 mi Feb 25 Dec 5
Jackson, CA 78 mi Mar 4 Dec 11

Frequently asked questions

When is the last frost in Carson City?

On average, the last spring frost (32°F) in Carson City is around May 4. In about 1 year in 10 it comes after May 29, and in 9 years in 10 it comes after April 20.

When is the first frost in Carson City?

The first fall frost (32°F) usually arrives around October 6. There’s a 10% chance of a freeze by September 24 and a 90% chance by October 20.

Can it frost in Carson City 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 26.

What growing zone is Carson City?

Carson City is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 89701. See growing zones in Nevada.

More: all Nevada frost dates · Nevada growing zones · UV index today in Carson City · frost vs. freeze