Last frost date in North Tonawanda, NY

Average last frost
May 6

The average last frost in North Tonawanda is May 6. By May 19 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about October 15, which leaves 160 frost-free days. An early freeze before September 30 happens one year in ten.

Safe after (10% risk)
May 19
Average first frost
Oct 15
Frost-free season
160 days
Hard freeze (28°F) ends
Apr 26
Next 7 nights in North Tonawanda

Frost possible in low spots Fri night, low 34°F

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

  1. ThuOct 2238°
  2. FriOct 2334°possible frost
  3. SatOct 2439°
  4. SunOct 2547°
  5. MonOct 2644°
  6. TueOct 2741°
  7. WedOct 2842°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost May 6First frost Oct 15160 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND160 frost-free days
Frost risk through the year at N Tonawanda, 0.7 miles from North Tonawanda.

Planting calendar for North Tonawanda

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

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesMay 13–May 27
PumpkinsMay 20–Jun 3
SunflowersMay 6–May 27
CucumbersMay 20–May 27
CornMay 13–May 27
Sweet potatoesMay 27–Jun 10
WatermelonMay 20–Jun 3
Green beansMay 13–Jun 3
ZucchiniMay 13–May 27
OkraMay 27–Jun 10
PeppersMay 20–Jun 3
BasilMay 13–May 27
Butternut squashMay 13–May 27
CantaloupeMay 20–Jun 3
EggplantMay 20–Jun 3
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesApr 8–Apr 22
OnionsMar 25–Apr 15
CarrotsApr 15–May 20
LettuceApr 22–May 13
BroccoliApr 8–Apr 22
BeetsApr 8–May 20
PeasMar 25–Apr 8
CabbageApr 8–Apr 22
RadishesApr 1–May 13
Brussels sproutsApr 22–May 6
SpinachMar 25–Apr 15
CilantroApr 22–May 13
KaleApr 8–Apr 22
Collard greensApr 8–Apr 22
TurnipsApr 8–Apr 22
DillMay 6–May 20
CeleryMay 13–May 20
CauliflowerApr 22–May 6
LeeksApr 22–May 6
Swiss chardApr 22–May 20
ParsleyApr 22–May 13
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsOct 1–Nov 5
GarlicSep 24–Oct 29
Daffodil bulbsSep 17–Oct 29
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesApr 8–Apr 22
AsparagusApr 8–Apr 22

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FApr 24May 6May 19Sep 30Oct 15Oct 30
Hard freeze, 28°FApr 12Apr 26May 10Oct 12Oct 29Nov 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 N Tonawanda (USC00306047) sits 0.7 miles from the center of North Tonawanda at 578 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 North Tonawanda, NY?

The average last frost date in North Tonawanda is May 6, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 19.

When is the first frost in North Tonawanda?

The first frost in fall usually comes around October 15. One year in ten it arrives before September 30.

How long is the growing season in North Tonawanda?

About 160 days between the average last and first frost.

When should I plant tomatoes in North Tonawanda?

Plant tomato seedlings outside from May 13 to May 27. Start seeds indoors six to eight weeks earlier.

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