Last frost date in Dixon, CA

Average last frost
February 10

The average last frost in Dixon is February 10. By March 11 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about December 1, which leaves 295 frost-free days. An early freeze before November 13 happens one year in ten.

Safe after (10% risk)
Mar 11
Average first frost
Dec 1
Frost-free season
295 days
Hard freeze (28°F) ends
Jan 6
Next 6 nights in Dixon

No frost in the next 6 nights

National Weather Service forecast, updated Oct 22, 12:57 UTC

  1. ThuOct 2252°
  2. FriOct 2349°
  3. SatOct 2446°
  4. SunOct 2549°
  5. MonOct 2649°
  6. TueOct 2749°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Feb 10First frost Dec 1295 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND295 frost-free days
Frost risk through the year at Davis 2 WSW Experiment Farm, 6.6 miles from Dixon.

Planting calendar for Dixon

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
TomatoesFeb 17–Mar 3
PumpkinsFeb 24–Mar 10
SunflowersFeb 15–Mar 8
CucumbersFeb 24–Mar 3
CornFeb 17–Mar 3
Sweet potatoesMar 3–Mar 17
WatermelonFeb 24–Mar 10
Green beansFeb 17–Mar 10
ZucchiniFeb 17–Mar 3
OkraMar 3–Mar 17
PeppersFeb 24–Mar 10
BasilFeb 17–Mar 3
Butternut squashFeb 17–Mar 3
CantaloupeFeb 24–Mar 10
EggplantFeb 24–Mar 10
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesJan 13–Jan 27
OnionsDec 30–Jan 20
CarrotsJan 20–Feb 24
LettuceJan 27–Feb 17
BroccoliJan 13–Jan 27
BeetsJan 13–Feb 24
PeasDec 30–Jan 13
CabbageJan 13–Jan 27
RadishesJan 6–Feb 17
Brussels sproutsJan 27–Feb 10
SpinachDec 30–Jan 20
CilantroJan 27–Feb 17
KaleJan 13–Jan 27
Collard greensJan 13–Jan 27
TurnipsJan 13–Jan 27
DillFeb 10–Feb 24
CeleryFeb 17–Feb 24
CauliflowerJan 27–Feb 10
LeeksJan 27–Feb 10
Swiss chardJan 27–Feb 24
ParsleyJan 27–Feb 17
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsNov 17–Dec 15
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesJan 13–Jan 27
AsparagusJan 13–Jan 27

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FDec 31Feb 10Mar 11Nov 13Dec 1Dec 27
Hard freeze, 28°FDec 14Jan 6Feb 8Nov 29Dec 18Jan 18

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 Davis 2 WSW Experiment Farm (USC00042294) sits 6.6 miles from the center of Dixon at 60 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 Dixon, CA?

The average last frost date in Dixon is February 10, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after March 11.

When is the first frost in Dixon?

The first frost in fall usually comes around December 1. One year in ten it arrives before November 13.

How long is the growing season in Dixon?

About 295 days between the average last and first frost.

When should I plant tomatoes in Dixon?

Plant tomato seedlings outside from February 17 to March 3. Start seeds indoors six to eight weeks earlier.

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