Last frost date in Greenfield, CA

Average last frost
February 23

Expect the last frost in Greenfield around February 23. Frost after March 31 happens in only one year out of ten. The first fall frost usually arrives about November 22, which leaves 271 frost-free days. An early freeze before November 1 happens one year in ten.

Safe after (10% risk)
Mar 31
Average first frost
Nov 22
Frost-free season
271 days
Hard freeze (28°F) ends
Jan 22
Next 6 nights in Greenfield

No frost in the next 6 nights

National Weather Service forecast, updated Oct 22, 12:24 UTC

  1. ThuOct 2249°
  2. FriOct 2345°
  3. SatOct 2447°
  4. SunOct 2547°
  5. MonOct 2647°
  6. TueOct 2747°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Feb 23First frost Nov 22271 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND271 frost-free days
Frost risk through the year at King City, 10.0 miles from Greenfield.

Planting calendar for Greenfield

Windows count forward or back from the average frost dates above. Click a crop for dates across California.

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesMar 2–Mar 16
PumpkinsMar 9–Mar 23
SunflowersFeb 23–Mar 16
CucumbersMar 9–Mar 16
CornMar 2–Mar 16
Sweet potatoesMar 16–Mar 30
WatermelonMar 9–Mar 23
Green beansMar 2–Mar 23
ZucchiniMar 2–Mar 16
OkraMar 16–Mar 30
PeppersMar 9–Mar 23
BasilMar 2–Mar 16
Butternut squashMar 2–Mar 16
CantaloupeMar 9–Mar 23
EggplantMar 9–Mar 23
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesJan 26–Feb 9
OnionsJan 12–Feb 2
CarrotsFeb 2–Mar 9
LettuceFeb 9–Mar 2
BroccoliJan 26–Feb 9
BeetsJan 26–Mar 9
PeasJan 12–Jan 26
CabbageJan 26–Feb 9
RadishesJan 19–Mar 2
Brussels sproutsFeb 9–Feb 23
SpinachJan 12–Feb 2
CilantroFeb 9–Mar 2
KaleJan 26–Feb 9
Collard greensJan 26–Feb 9
TurnipsJan 26–Feb 9
DillFeb 23–Mar 9
CeleryMar 2–Mar 9
CauliflowerFeb 9–Feb 23
LeeksFeb 9–Feb 23
Swiss chardFeb 9–Mar 9
ParsleyFeb 9–Mar 2
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsNov 8–Dec 13
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesJan 26–Feb 9
AsparagusJan 26–Feb 9

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FJan 19Feb 23Mar 31Nov 1Nov 22Dec 11
Hard freeze, 28°FDec 18Jan 22Feb 21Nov 19Dec 6Jan 10

Read the spring 10% column as the date after which only one year in ten still gets frost. That is the safer date for tomatoes, peppers and basil.

Where these numbers come from

NOAA station King City (USC00044555) sits 10.0 miles from the center of Greenfield at 320 feet. Its averages cover 1991 to 2020. Low spots, valleys and open fields can keep getting frost a week or two after the station stops; city centers and lakeshores usually get less of it.

Questions

When is the last frost in Greenfield, CA?

The average last frost date in Greenfield is February 23, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after March 31.

When is the first frost in Greenfield?

The first frost in fall usually comes around November 22. One year in ten it arrives before November 1.

How long is the growing season in Greenfield?

About 271 days between the average last and first frost.

When should I plant tomatoes in Greenfield?

Plant tomato seedlings outside from March 2 to March 16. Start seeds indoors six to eight weeks earlier.

Nearby in California

All 348 cities in California