Last frost date in Payson, UT

Average last frost
May 4

Expect the last frost in Payson around May 4. Frost after May 28 happens in only one year out of ten. The first fall frost usually arrives about October 11, which leaves 157 frost-free days. An early freeze before September 27 happens one year in ten.

Safe after (10% risk)
May 28
Average first frost
Oct 11
Frost-free season
157 days
Hard freeze (28°F) ends
Apr 19
Next 7 nights in Payson

No frost in the next 7 nights

Later than usual: the average first frost here is October 11.

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

  1. ThuOct 2244°
  2. FriOct 2339°
  3. SatOct 2438°
  4. SunOct 2537°
  5. MonOct 2638°
  6. TueOct 2737°
  7. WedOct 2840°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost May 4First frost Oct 11157 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND157 frost-free days
Frost risk through the year at Santaquin Chlorinator, 5.8 miles from Payson.

Planting calendar for Payson

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

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesMay 11–May 25
PumpkinsMay 18–Jun 1
SunflowersMay 4–May 25
CucumbersMay 18–May 25
CornMay 11–May 25
Sweet potatoesMay 25–Jun 8
WatermelonMay 18–Jun 1
Green beansMay 11–Jun 1
ZucchiniMay 11–May 25
OkraMay 25–Jun 8
PeppersMay 18–Jun 1
BasilMay 11–May 25
Butternut squashMay 11–May 25
CantaloupeMay 18–Jun 1
EggplantMay 18–Jun 1
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesApr 6–Apr 20
OnionsMar 23–Apr 13
CarrotsApr 13–May 18
LettuceApr 20–May 11
BroccoliApr 6–Apr 20
BeetsApr 6–May 18
PeasMar 23–Apr 6
CabbageApr 6–Apr 20
RadishesMar 30–May 11
Brussels sproutsApr 20–May 4
SpinachMar 23–Apr 13
CilantroApr 20–May 11
KaleApr 6–Apr 20
Collard greensApr 6–Apr 20
TurnipsApr 6–Apr 20
DillMay 4–May 18
CeleryMay 11–May 18
CauliflowerApr 20–May 4
LeeksApr 20–May 4
Swiss chardApr 20–May 18
ParsleyApr 20–May 11
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsSep 27–Nov 1
GarlicSep 20–Oct 25
Daffodil bulbsSep 13–Oct 25
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesApr 6–Apr 20
AsparagusApr 6–Apr 20

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FApr 18May 4May 28Sep 27Oct 11Oct 26
Hard freeze, 28°FMar 31Apr 19May 10Oct 8Oct 23Nov 7

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 Santaquin Chlorinator (USC00427686) sits 5.8 miles from the center of Payson at 5,160 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 Payson, UT?

The average last frost date in Payson is May 4, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 28.

When is the first frost in Payson?

The first frost in fall usually comes around October 11. One year in ten it arrives before September 27.

How long is the growing season in Payson?

About 157 days between the average last and first frost.

When should I plant tomatoes in Payson?

Plant tomato seedlings outside from May 11 to May 25. Start seeds indoors six to eight weeks earlier.

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