Last frost date in West Haven, UT
In West Haven, the last spring frost comes around April 22 in an average year. Wait until May 9 if you want 90% odds of no more frost. The first fall frost usually arrives about October 18, which leaves 177 frost-free days. An early freeze before October 1 happens one year in ten.
- Safe after (10% risk)
- May 9
- Average first frost
- Oct 18
- Frost-free season
- 177 days
- Hard freeze (28°F) ends
- Apr 3
No frost in the next 7 nights
Later than usual: the average first frost here is October 18.
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2246°
- FriOct 2339°
- SatOct 2438°
- SunOct 2537°
- MonOct 2638°
- TueOct 2737°
- WedOct 2839°
Planting calendar for West Haven
Windows count forward or back from the average frost dates above. Click a crop for dates across Utah.
TomatoesApr 29–May 13
PumpkinsMay 6–May 20
SunflowersApr 22–May 13
CucumbersMay 6–May 13
CornApr 29–May 13
Sweet potatoesMay 13–May 27
WatermelonMay 6–May 20
Green beansApr 29–May 20
ZucchiniApr 29–May 13
OkraMay 13–May 27
PeppersMay 6–May 20
BasilApr 29–May 13
Butternut squashApr 29–May 13
CantaloupeMay 6–May 20
EggplantMay 6–May 20
PotatoesMar 25–Apr 8
OnionsMar 11–Apr 1
CarrotsApr 1–May 6
LettuceApr 8–Apr 29
BroccoliMar 25–Apr 8
BeetsMar 25–May 6
PeasMar 11–Mar 25
CabbageMar 25–Apr 8
RadishesMar 18–Apr 29
Brussels sproutsApr 8–Apr 22
SpinachMar 11–Apr 1
CilantroApr 8–Apr 29
KaleMar 25–Apr 8
Collard greensMar 25–Apr 8
TurnipsMar 25–Apr 8
DillApr 22–May 6
CeleryApr 29–May 6
CauliflowerApr 8–Apr 22
LeeksApr 8–Apr 22
Swiss chardApr 8–May 6
ParsleyApr 8–Apr 29
Tulip bulbsOct 4–Nov 8
GarlicSep 27–Nov 1
Daffodil bulbsSep 20–Nov 1
StrawberriesMar 25–Apr 8
AsparagusMar 25–Apr 8Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Apr 5 | Apr 22 | May 9 | Oct 1 | Oct 18 | Nov 2 |
| Hard freeze, 28°F | Mar 12 | Apr 3 | Apr 22 | Oct 15 | Oct 29 | Nov 13 |
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 Ogden Sugar Factory (USC00426414) sits 2.1 miles from the center of West Haven at 4,280 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 West Haven, UT?
The average last frost date in West Haven is April 22, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 9.
When is the first frost in West Haven?
The first frost in fall usually comes around October 18. One year in ten it arrives before October 1.
How long is the growing season in West Haven?
About 177 days between the average last and first frost.
When should I plant tomatoes in West Haven?
Plant tomato seedlings outside from April 29 to May 13. Start seeds indoors six to eight weeks earlier.
Nearby in Utah
- RoyApr 22
- OgdenApr 21
- ClintonApr 22
- ClearfieldApr 29
- SyracuseApr 22
- North OgdenApr 19
- LaytonApr 29
- KaysvilleApr 19
- FarmingtonApr 19
- Brigham CityMay 5
- BountifulApr 25
- North Salt LakeApr 24