Last frost date in Brigham City, UT
The average last frost in Brigham City is May 5. By May 29 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about October 5, which leaves 150 frost-free days. An early freeze before September 20 happens one year in ten.
- Safe after (10% risk)
- May 29
- Average first frost
- Oct 5
- Frost-free season
- 150 days
- Hard freeze (28°F) ends
- Apr 18
Frost possible in low spots Fri night, low 36°F
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2244°
- FriOct 2336°possible frost
- SatOct 2434°possible frost
- SunOct 2534°possible frost
- MonOct 2635°possible frost
- TueOct 2734°possible frost
- WedOct 2836°possible frost
Planting calendar for Brigham City
Windows count forward or back from the average frost dates above. Click a crop for dates across Utah.
TomatoesMay 12–May 26
PumpkinsMay 19–Jun 2
SunflowersMay 5–May 26
CucumbersMay 19–May 26
CornMay 12–May 26
Sweet potatoesMay 26–Jun 9
WatermelonMay 19–Jun 2
Green beansMay 12–Jun 2
ZucchiniMay 12–May 26
OkraMay 26–Jun 9
PeppersMay 19–Jun 2
BasilMay 12–May 26
Butternut squashMay 12–May 26
CantaloupeMay 19–Jun 2
EggplantMay 19–Jun 2
PotatoesApr 7–Apr 21
OnionsMar 24–Apr 14
CarrotsApr 14–May 19
LettuceApr 21–May 12
BroccoliApr 7–Apr 21
BeetsApr 7–May 19
PeasMar 24–Apr 7
CabbageApr 7–Apr 21
RadishesMar 31–May 12
Brussels sproutsApr 21–May 5
SpinachMar 24–Apr 14
CilantroApr 21–May 12
KaleApr 7–Apr 21
Collard greensApr 7–Apr 21
TurnipsApr 7–Apr 21
DillMay 5–May 19
CeleryMay 12–May 19
CauliflowerApr 21–May 5
LeeksApr 21–May 5
Swiss chardApr 21–May 19
ParsleyApr 21–May 12
Tulip bulbsSep 21–Oct 26
GarlicSep 14–Oct 19
Daffodil bulbsSep 7–Oct 19
StrawberriesApr 7–Apr 21
AsparagusApr 7–Apr 21Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Apr 20 | May 5 | May 29 | Sep 20 | Oct 5 | Oct 19 |
| Hard freeze, 28°F | Mar 31 | Apr 18 | May 5 | Oct 1 | Oct 17 | Nov 1 |
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 Brigham City Waste Plt (USC00420928) sits 1.3 miles from the center of Brigham City at 4,240 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 Brigham City, UT?
The average last frost date in Brigham City is May 5, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 29.
When is the first frost in Brigham City?
The first frost in fall usually comes around October 5. One year in ten it arrives before September 20.
How long is the growing season in Brigham City?
About 150 days between the average last and first frost.
When should I plant tomatoes in Brigham City?
Plant tomato seedlings outside from May 12 to May 26. Start seeds indoors six to eight weeks earlier.
Nearby in Utah
- North OgdenApr 19
- LoganMay 8
- OgdenApr 21
- West HavenApr 22
- RoyApr 22
- ClintonApr 22
- ClearfieldApr 29
- SyracuseApr 22
- LaytonApr 29
- KaysvilleApr 19
- FarmingtonApr 19
- BountifulApr 25