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Frost dates for San Francisco Oceanside, California

Frost is rare here. In a typical year this station records no freeze at all, so there is no last-frost date to plan around and the growing season runs all year.

Growing season

All year

Hardiness zones nearby

10a, 10b

Summer days

a usual high of about 17 °C62 °F

Summer and rain

A growing garden needs about 25 mm1 in of water a week, rain and watering together. Here is what a normal month brings.

Nearly every drop is yours

May to October: rain brings less than a quarter of the water a growing garden needs, about 25 mm1 in a week (how we know)

Month by month

January

high ~15 °C59 °F · low ~8 °C46 °F · rain ~100 mm3.9 in

February

high ~16 °C60 °F · low ~8 °C47 °F · rain ~102 mm4 in

March

high ~16 °C61 °F · low ~9 °C48 °F · rain ~76 mm3 in

April

high ~16 °C60 °F · low ~10 °C49 °F · rain ~35 mm1.4 in

May

high ~15 °C60 °F · low ~11 °C51 °F · rain ~16 mm0.6 in

June

high ~16 °C61 °F · low ~12 °C53 °F · rain ~4.8 mm0.2 in

July

high ~17 °C62 °F · low ~12 °C54 °F · rain ~0.3 mm0.01 in

August

high ~18 °C64 °F · low ~13 °C55 °F · rain ~1.3 mm0.05 in

September

high ~18 °C65 °F · low ~13 °C55 °F · rain ~2.8 mm0.1 in

October

high ~19 °C66 °F · low ~12 °C53 °F · rain ~23 mm0.9 in

November

high ~18 °C64 °F · low ~10 °C49 °F · rain ~56 mm2.2 in

December

high ~15 °C59 °F · low ~8 °C46 °F · rain ~107 mm4.2 in

What to sow when

Frost is rare in San Francisco Oceanside, so each crop’s months follow the warmth. Each one below can go in during these months and stay in its range of temperatures all the way to harvest. Where every month runs warmer than a crop likes, it gets the coolest months here (why).

Each crop’s range of monthly temperatures is an estimate from one extension table, so treat these months as a guide.

Where these numbers come from

NOAA NCEI 1991–2020 Climate Normals, the San Francisco Oceanside station (listed by NOAA as San Francisco Oceanside, USC00047767), at 37.73, -122.51. These are that station’s own records, unshifted. The further your garden is from it, the less exactly they describe your ground. The planner finds the nearest station to your garden and lowers its confidence with distance, so no number is presented as if it were measured in your garden.

Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a few hundred feet away does not. No table can know that about your garden. A few seasons of your own logged frosts can.

ZIP codes nearest this station

94014, 94015, 94102, 94103, 94104, 94107, 94108, 94109, 94110, 94112, 94114, 94115…

Nearby stations

The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.

• Oakland Museum, CA, frost is rare
• Oakland Metro International Airport, CA, last frost by January 7
• Skyline Ridge Preserve, CA, last frost by March 21
• Livermore, CA, last frost by February 15
• Mt Hamilton, CA, last frost by May 3
• Lodi, CA, last frost by February 9

Other stations in California.

• Woodland 1 WNW, CA, last frost by February 7
• Sacramento 5 ESE, CA, last frost by January 12
• Auburn, CA, last frost by February 25
• Fresno 5 NE, CA, last frost by January 30
• Shelter Cove Aviation, CA, frost is rare
• Oxnard, CA, frost is rare
• Woodland Hills Pierce College, CA, last frost by January 24
• Burbank Glendale Pasadena Airport, CA, frost is rare

All locations · All plants · Folklore, checked