Frost dates 2026–2027

Frost dates for Payette, Idaho

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Payette, 0.3 mi away (close match).

Last spring frostApr 19
First fall frostOct 20
183 frost-free days
Last spring frostApr 191 year in 10 after May 5
First fall frostOct 201 year in 10 by Oct 6
Growing season183 daysbetween median 32°F dates
Hardiness zoneZone 7a0 to 5°F average extreme low

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Will it freeze in Payette 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 MST to Fri, Nov 6, 6:00 AM MST).

Tonight: forecast low 30°F. Freeze.

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

6 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 Payette

The median first fall hard-freeze date (28°F) is October 31, from NOAA’s 1991–2020 Climate Normals at Payette. 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 18 · May 2 · May 21 Sep 25 · Oct 8 · Oct 22 158 days
32°F freeze Apr 1 · Apr 19 · May 5 Oct 6 · Oct 20 · Nov 4 183 days
28°F hard freeze Mar 7 · Mar 31 · Apr 20 Oct 17 · Oct 31 · Nov 16 214 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00106891. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Payette

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 Payette, ID come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Payette (station USC00106891, elevation 2,150 ft), 0.3 mi from Payette. 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 Payette

CityDistanceLast spring frostFirst fall frost
Fruitland, ID 4.3 mi Apr 22 Oct 9
Ontario, OR 4.3 mi Apr 22 Oct 9
Weiser, ID 12 mi Apr 23 Oct 13
Emmett, ID 26 mi Apr 30 Oct 17
Middleton, ID 30 mi Apr 29 Oct 13
Caldwell, ID 33 mi Apr 29 Oct 13
Star, ID 34 mi Apr 29 Oct 13
Eagle, ID 37 mi Apr 29 Oct 13
Nampa, ID 39 mi Apr 29 Oct 13
Meridian, ID 42 mi Apr 24 Oct 21

Frequently asked questions

When is the last frost in Payette?

On average, the last spring frost (32°F) in Payette is around April 19. In about 1 year in 10 it comes after May 5, and in 9 years in 10 it comes after April 1.

When is the first frost in Payette?

The first fall frost (32°F) usually arrives around October 20. There’s a 10% chance of a freeze by October 6 and a 90% chance by November 4.

Can it frost in Payette 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 Payette?

Payette 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 83619. See growing zones in Idaho.

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