Last frost date in Adrian, MI
In Adrian, the last spring frost comes around May 1 in an average year. Wait until May 17 if you want 90% odds of no more frost. The first fall frost usually arrives about October 15, which leaves 164 frost-free days. An early freeze before October 1 happens one year in ten.
- Safe after (10% risk)
- May 17
- Average first frost
- Oct 15
- Frost-free season
- 164 days
- Hard freeze (28°F) ends
- Apr 20
No frost in the next 7 nights
Later than usual: the average first frost here is October 15.
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2242°
- FriOct 2341°
- SatOct 2440°
- SunOct 2544°
- MonOct 2644°
- TueOct 2740°
- WedOct 2841°
Planting calendar for Adrian
Windows count forward or back from the average frost dates above. Click a crop for dates across Michigan.
TomatoesMay 8–May 22
PumpkinsMay 15–May 29
SunflowersMay 1–May 22
CucumbersMay 15–May 22
CornMay 8–May 22
Sweet potatoesMay 22–Jun 5
WatermelonMay 15–May 29
Green beansMay 8–May 29
ZucchiniMay 8–May 22
OkraMay 22–Jun 5
PeppersMay 15–May 29
BasilMay 8–May 22
Butternut squashMay 8–May 22
CantaloupeMay 15–May 29
EggplantMay 15–May 29
PotatoesApr 3–Apr 17
OnionsMar 20–Apr 10
CarrotsApr 10–May 15
LettuceApr 17–May 8
BroccoliApr 3–Apr 17
BeetsApr 3–May 15
PeasMar 20–Apr 3
CabbageApr 3–Apr 17
RadishesMar 27–May 8
Brussels sproutsApr 17–May 1
SpinachMar 20–Apr 10
CilantroApr 17–May 8
KaleApr 3–Apr 17
Collard greensApr 3–Apr 17
TurnipsApr 3–Apr 17
DillMay 1–May 15
CeleryMay 8–May 15
CauliflowerApr 17–May 1
LeeksApr 17–May 1
Swiss chardApr 17–May 15
ParsleyApr 17–May 8
Tulip bulbsOct 1–Nov 5
GarlicSep 24–Oct 29
Daffodil bulbsSep 17–Oct 29
StrawberriesApr 3–Apr 17
AsparagusApr 3–Apr 17Frost 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 1 | May 17 | Oct 1 | Oct 15 | Oct 29 |
| Hard freeze, 28°F | Apr 6 | Apr 20 | May 7 | Oct 12 | Oct 27 | Nov 9 |
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 Adrian 2 NNE (USC00200032) sits 1.9 miles from the center of Adrian at 760 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 Adrian, MI?
The average last frost date in Adrian is May 1, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 17.
When is the first frost in Adrian?
The first frost in fall usually comes around October 15. One year in ten it arrives before October 1.
How long is the growing season in Adrian?
About 164 days between the average last and first frost.
When should I plant tomatoes in Adrian?
Plant tomato seedlings outside from May 8 to May 22. Start seeds indoors six to eight weeks earlier.