Frost dates 2026–2027

Frost dates for Hughson, California

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Modesto City County Airport, 4.8 mi away (close match).

Last spring frostJan 31
First fall frostDec 5
312 frost-free days
Last spring frostJan 311 year in 10 after Feb 25
First fall frostDec 51 year in 10 by Nov 20
Growing season312 daysbetween median 32°F dates
Hardiness zoneZone 9b25 to 30°F average extreme low

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Will it freeze in Hughson in the next 7 nights?

No overnight lows at or below 32°F are forecast in Hughson during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 43°F. Above 36°F.

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

No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.

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 Hughson

The median first fall hard-freeze date (28°F) is December 21, from NOAA’s 1991–2020 Climate Normals at Modesto City County Airport. 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 Feb 3 · Mar 1 · Mar 31 Nov 8 · Nov 22 · Dec 9 262 days
32°F freeze Dec 31 · Jan 31 · Feb 25 Nov 20 · Dec 5 · Jan 6 312 days
28°F hard freeze Dec 16 · Jan 8 · Feb 6 Dec 1 · Dec 21 · Jan 20 352 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00023258. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Modesto City County Airport

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 Hughson, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Modesto City County Airport (station USW00023258, elevation 73 ft), 4.8 mi from Hughson. 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 Hughson

CityDistanceLast spring frostFirst fall frost
Ceres, CA 5.6 mi Jan 31 Dec 5
Turlock, CA 6.8 mi Jan 6 Dec 20
Waterford, CA 6.8 mi Jan 31 Dec 5
Modesto, CA 8.1 mi Jan 31 Dec 5
Riverbank, CA 9.3 mi Jan 31 Dec 5
Oakdale, CA 11 mi Jan 31 Dec 5
Escalon, CA 15 mi Jan 31 Dec 5
Livingston, CA 17 mi Jan 6 Dec 20
Ripon, CA 17 mi Feb 6 Dec 1
Patterson, CA 18 mi Jan 31 Dec 5

Frequently asked questions

When is the last frost in Hughson?

On average, the last spring frost (32°F) in Hughson is around January 31. In about 1 year in 10 it comes after February 25, and in 9 years in 10 it comes after December 31.

When is the first frost in Hughson?

The first fall frost (32°F) usually arrives around December 5. There’s a 10% chance of a freeze by November 20 and a 90% chance by January 6.

Can it frost in Hughson 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 March 1.

What growing zone is Hughson?

Hughson is in USDA Plant Hardiness Zone 9b (average annual extreme minimum temperature 25 to 30°F), based on the 2023 USDA map for ZIP code 95326. See growing zones in California.

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