Last frost date in Haverhill, MA
The average last frost in Haverhill is May 1. By May 14 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about October 12, which leaves 163 frost-free days. An early freeze before October 1 happens one year in ten.
- Safe after (10% risk)
- May 14
- Average first frost
- Oct 12
- Frost-free season
- 163 days
- Hard freeze (28°F) ends
- Apr 19
Hard freeze likely Fri night, low 28°F
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2234°possible frost
- FriOct 2328°hard freeze
- SatOct 2429°frost
- SunOct 2534°possible frost
- MonOct 2641°
- TueOct 2735°possible frost
- WedOct 2837°
Planting calendar for Haverhill
Windows count forward or back from the average frost dates above. Click a crop for dates across Massachusetts.
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 bulbsSep 28–Nov 2
GarlicSep 21–Oct 26
Daffodil bulbsSep 14–Oct 26
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 20 | May 1 | May 14 | Oct 1 | Oct 12 | Oct 28 |
| Hard freeze, 28°F | Apr 6 | Apr 19 | May 1 | Oct 7 | Oct 23 | Nov 7 |
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 Haverhill (USC00193505) sits 2.1 miles from the center of Haverhill at 20 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 Haverhill, MA?
The average last frost date in Haverhill is May 1, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 14.
When is the first frost in Haverhill?
The first frost in fall usually comes around October 12. One year in ten it arrives before October 1.
How long is the growing season in Haverhill?
About 163 days between the average last and first frost.
When should I plant tomatoes in Haverhill?
Plant tomato seedlings outside from May 8 to May 22. Start seeds indoors six to eight weeks earlier.