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USDA Hardiness Zone 9b

Frost Dates for 95695 — Woodland, California

NOAA 1991–2020 normals from Woodland 1 WNW, CA (67 ft), 1 miles southeast.

Updated

In Woodland, the last spring frost (32°F) is around February 7 in half of years and has passed by March 11 in nine years out of ten. The first fall frost comes around December 5, as early as November 19 one year in ten, leaving a typical freeze-free season of 301 days (NOAA, Woodland 1 WNW, CA).

Last spring frost
February 7

50% probability

First fall frost
December 5

50% probability

Growing season
301 days

freeze-free, 50%

Hardiness zone
9b

25 to 30°F (-3.9 to -1.1°C) coldest night

First snow
Rare

median, 1991–2020

Last snow
Rare

median, 1991–2020

Winters with snow
0%

0 of 25 observed

Snow per year
0"

NOAA normal

Frost risk by date in Woodland

Half of springs at Woodland 1 WNW, CA see their last 32°F night by February 7; only one in ten is past it by January 9, and one in ten still has one after March 11. Planting tender crops after February 24 leaves a 30% risk of a frost on them, after March 2 20%, and after March 11 10%. The 32 days between the even-odds date and the one-in-ten date is wider than at 55% of the 220 California stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by December 5 in half of years, as early as November 19 one year in ten, and holds off past January 1 one year in ten. A hard freeze of 28°F follows 13 days later, around December 18; in spring the one-in-ten date for 28°F is February 2, 37 days before the 32°F one. The freeze-free season lasts 301 days in a typical year, longer than at 64% of the 219 California stations; it reaches 336 days one year in ten and falls short of 260 one year in ten. On average 9 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 36 days longer, to about March 15, and return around November 20. A 24°F night is unusual: 24% of winters had one.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FFeb 15Feb 27Mar 5Mar 9Mar 15Mar 22Mar 28Apr 3Apr 12
32°F98% of yrsJan 9Jan 20Jan 29Feb 2Feb 7Feb 16Feb 24Mar 2Mar 11
28°F71% of yrsDec 14Dec 25Dec 31Jan 4Jan 10Jan 15Jan 21Jan 27Feb 2
24°F24% of yrstoo rare for a date
20°F1% of yrstoo rare for a date
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FNov 4Nov 10Nov 13Nov 17Nov 20Nov 23Nov 26Nov 29Dec 5
32°F98% of yrsNov 19Nov 25Nov 29Dec 1Dec 5Dec 9Dec 12Dec 19Jan 1
28°F71% of yrsDec 1Dec 5Dec 9Dec 13Dec 18Dec 23Dec 31Jan 5Jan 16
24°F24% of yrstoo rare for a date
20°F1% of yrstoo rare for a date

Freeze probabilities 1991–2020 at Woodland 1 WNW, CA, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.

Frost risk on any date in 95695 →Compare Woodland with another place →

Weather by month in Woodland

July is the warmest month at Woodland 1 WNW, CA, averaging 95°F by day and 58°F at night; January is the coldest at 56°F and 38°F. From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 51% of years and March still brings one in 21% of years.

Warmth for growing adds up to 4,768 growing degree days a year (base 50°F), more than at 58% of the 283 California stations. 38% of them (1,823) have built up by the end of June, and July adds the most, 823. Precipitation totals 20.5 inches a year, most in January (4.5") and least in July (0.0"); May to September bring 5% of it.

Monthly normals 1991–2020 at Woodland 1 WNW, CA
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan56384.581%320
Feb62414.251%172
Mar68442.821%<1191
Apr74471.32%0316
May82520.70%0529
Jun90570.20%0696
Jul95580.00%0823
Aug94570.00%0800
Sep90560.20%0691
Oct80500.80%0467
Nov65432.035%1143
Dec56383.884%522

Monthly normals 1991–2020 at Woodland 1 WNW, CA (67 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.

Compared with the next station

The nearest other station, Davis 2 WSW Exp Farm, CA, 11 miles south of Woodland, has a last frost 3 days later (February 10), a first frost 4 days earlier (December 1), a season 6 days shorter.

Frost dates for 95616 (Davis) →

When it snows in Woodland, California

Measurable snow is rare here: only 0 of 25 winters from 1991 to 2020 recorded 0.1 inch or more at Woodland 1 WNW, CA, 1.3 miles away, so there is no typical first-snow date to plan around.

Planting calendar for 95695

What to do and when, from the 50% frost dates for Woodland, California
WhenWhat to do
November 29 – December 13Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
December 13 – December 27Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
January 10 – January 24Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
February 7 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by September 12Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by November 21Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
December 5 onwardPlant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter.

The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.

Where these figures come from

ZIP 95695 is 1 mile from Woodland 1 WNW, CA, which stands at 67 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 95695 in zone 9b, the band where the coldest night of the year averaged 25 to 30°F (-3.9 to -1.1°C) over 1991–2020; a zone describes winter lows, not frost dates.

Frost dates across California →

Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.

Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.

ZIP codes measured at the same station

Other zone 9b places in California