Last frost date in Kearns, UT
The average last frost in Kearns is April 8. By April 30 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about October 31, which leaves 204 frost-free days. An early freeze before October 17 happens one year in ten.
- Safe after (10% risk)
- Apr 30
- Average first frost
- Oct 31
- Frost-free season
- 204 days
- Hard freeze (28°F) ends
- Mar 15
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2250°
- FriOct 2344°
- SatOct 2442°
- SunOct 2541°
- MonOct 2643°
- TueOct 2742°
- WedOct 2844°
Planting calendar for Kearns
Windows count forward or back from the average frost dates above. Click a crop for dates across Utah.
TomatoesApr 15–Apr 29
PumpkinsApr 22–May 6
SunflowersApr 8–Apr 29
CucumbersApr 22–Apr 29
CornApr 15–Apr 29
Sweet potatoesApr 29–May 13
WatermelonApr 22–May 6
Green beansApr 15–May 6
ZucchiniApr 15–Apr 29
OkraApr 29–May 13
PeppersApr 22–May 6
BasilApr 15–Apr 29
Butternut squashApr 15–Apr 29
CantaloupeApr 22–May 6
EggplantApr 22–May 6
PotatoesMar 11–Mar 25
OnionsFeb 25–Mar 18
CarrotsMar 18–Apr 22
LettuceMar 25–Apr 15
BroccoliMar 11–Mar 25
BeetsMar 11–Apr 22
PeasFeb 25–Mar 11
CabbageMar 11–Mar 25
RadishesMar 4–Apr 15
Brussels sproutsMar 25–Apr 8
SpinachFeb 25–Mar 18
CilantroMar 25–Apr 15
KaleMar 11–Mar 25
Collard greensMar 11–Mar 25
TurnipsMar 11–Mar 25
DillApr 8–Apr 22
CeleryApr 15–Apr 22
CauliflowerMar 25–Apr 8
LeeksMar 25–Apr 8
Swiss chardMar 25–Apr 22
ParsleyMar 25–Apr 15
Tulip bulbsOct 17–Nov 21
GarlicOct 10–Nov 14
Daffodil bulbsOct 3–Nov 14
StrawberriesMar 11–Mar 25
AsparagusMar 11–Mar 25Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Mar 17 | Apr 8 | Apr 30 | Oct 17 | Oct 31 | Nov 13 |
| Hard freeze, 28°F | Feb 27 | Mar 15 | Apr 8 | Oct 27 | Nov 10 | Nov 24 |
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 Salt Lake City International Airport (USW00024127) sits 9.0 miles from the center of Kearns at 4,225 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 Kearns, UT?
The average last frost date in Kearns is April 8, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 30.
When is the first frost in Kearns?
The first frost in fall usually comes around October 31. One year in ten it arrives before October 17.
How long is the growing season in Kearns?
About 204 days between the average last and first frost.
When should I plant tomatoes in Kearns?
Plant tomato seedlings outside from April 15 to April 29. Start seeds indoors six to eight weeks earlier.
Nearby in Utah
- West Valley CityApr 8
- TaylorsvilleMar 31
- West JordanApr 18
- MurrayApr 29
- MidvaleApr 29
- South JordanApr 18
- South Salt LakeMar 31
- Salt Lake CityMar 31
- RivertonApr 18
- MillcreekApr 25
- HolladayApr 29
- SandyApr 29