Last frost date in Highland, UT
Expect the last frost in Highland around May 3. Frost after May 26 happens in only one year out of ten. The first fall frost usually arrives about October 12, which leaves 159 frost-free days. An early freeze before September 29 happens one year in ten.
- Safe after (10% risk)
- May 26
- Average first frost
- Oct 12
- Frost-free season
- 159 days
- Hard freeze (28°F) ends
- Apr 16
No frost in the next 7 nights
Later than usual: the average first frost here is October 12.
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2244°
- FriOct 2339°
- SatOct 2439°
- SunOct 2539°
- MonOct 2640°
- TueOct 2740°
- WedOct 2842°
Planting calendar for Highland
Windows count forward or back from the average frost dates above. Click a crop for dates across Utah.
TomatoesMay 10–May 24
PumpkinsMay 17–May 31
SunflowersMay 3–May 24
CucumbersMay 17–May 24
CornMay 10–May 24
Sweet potatoesMay 24–Jun 7
WatermelonMay 17–May 31
Green beansMay 10–May 31
ZucchiniMay 10–May 24
OkraMay 24–Jun 7
PeppersMay 17–May 31
BasilMay 10–May 24
Butternut squashMay 10–May 24
CantaloupeMay 17–May 31
EggplantMay 17–May 31
PotatoesApr 5–Apr 19
OnionsMar 22–Apr 12
CarrotsApr 12–May 17
LettuceApr 19–May 10
BroccoliApr 5–Apr 19
BeetsApr 5–May 17
PeasMar 22–Apr 5
CabbageApr 5–Apr 19
RadishesMar 29–May 10
Brussels sproutsApr 19–May 3
SpinachMar 22–Apr 12
CilantroApr 19–May 10
KaleApr 5–Apr 19
Collard greensApr 5–Apr 19
TurnipsApr 5–Apr 19
DillMay 3–May 17
CeleryMay 10–May 17
CauliflowerApr 19–May 3
LeeksApr 19–May 3
Swiss chardApr 19–May 17
ParsleyApr 19–May 10
Tulip bulbsSep 28–Nov 2
GarlicSep 21–Oct 26
Daffodil bulbsSep 14–Oct 26
StrawberriesApr 5–Apr 19
AsparagusApr 5–Apr 19Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Apr 18 | May 3 | May 26 | Sep 29 | Oct 12 | Oct 26 |
| Hard freeze, 28°F | Mar 29 | Apr 16 | May 5 | Oct 8 | Oct 24 | Nov 8 |
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 Alpine (USC00420061) sits 2.9 miles from the center of Highland at 5,100 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 Highland, UT?
The average last frost date in Highland is May 3, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 26.
When is the first frost in Highland?
The first frost in fall usually comes around October 12. One year in ten it arrives before September 29.
How long is the growing season in Highland?
About 159 days between the average last and first frost.
When should I plant tomatoes in Highland?
Plant tomato seedlings outside from May 10 to May 24. Start seeds indoors six to eight weeks earlier.
Nearby in Utah
- American ForkApr 17
- LehiApr 30
- Pleasant GroveApr 17
- DraperApr 18
- Saratoga SpringsApr 30
- OremApr 19
- SandyApr 29
- RivertonApr 18
- HerrimanApr 18
- Cottonwood HeightsApr 29
- South JordanApr 18
- Eagle MountainJun 2