Last frost date in Clinton, MD
The average last frost in Clinton is April 3. By April 15 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about November 8, which leaves 217 frost-free days. An early freeze before October 24 happens one year in ten.
- Safe after (10% risk)
- Apr 15
- Average first frost
- Nov 8
- Frost-free season
- 217 days
- Hard freeze (28°F) ends
- Mar 21
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2245°
- FriOct 2338°
- SatOct 2439°
- SunOct 2541°
- MonOct 2645°
- TueOct 2748°
- WedOct 2848°
Planting calendar for Clinton
Windows count forward or back from the average frost dates above. Click a crop for dates across Maryland.
TomatoesApr 10–Apr 24
PumpkinsApr 17–May 1
SunflowersApr 3–Apr 24
CucumbersApr 17–Apr 24
CornApr 10–Apr 24
Sweet potatoesApr 24–May 8
WatermelonApr 17–May 1
Green beansApr 10–May 1
ZucchiniApr 10–Apr 24
OkraApr 24–May 8
PeppersApr 17–May 1
BasilApr 10–Apr 24
Butternut squashApr 10–Apr 24
CantaloupeApr 17–May 1
EggplantApr 17–May 1
PotatoesMar 6–Mar 20
OnionsFeb 20–Mar 13
CarrotsMar 13–Apr 17
LettuceMar 20–Apr 10
BroccoliMar 6–Mar 20
BeetsMar 6–Apr 17
PeasFeb 20–Mar 6
CabbageMar 6–Mar 20
RadishesFeb 27–Apr 10
Brussels sproutsMar 20–Apr 3
SpinachFeb 20–Mar 13
CilantroMar 20–Apr 10
KaleMar 6–Mar 20
Collard greensMar 6–Mar 20
TurnipsMar 6–Mar 20
DillApr 3–Apr 17
CeleryApr 10–Apr 17
CauliflowerMar 20–Apr 3
LeeksMar 20–Apr 3
Swiss chardMar 20–Apr 17
ParsleyMar 20–Apr 10
Tulip bulbsOct 25–Nov 29
GarlicOct 18–Nov 22
Daffodil bulbsOct 11–Nov 22
StrawberriesMar 6–Mar 20
AsparagusMar 6–Mar 20Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Mar 19 | Apr 3 | Apr 15 | Oct 24 | Nov 8 | Nov 23 |
| Hard freeze, 28°F | Mar 5 | Mar 21 | Apr 3 | Nov 5 | Nov 19 | Dec 8 |
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 Oxon Hill (USC00186800) sits 5.8 miles from the center of Clinton at 190 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 Clinton, MD?
The average last frost date in Clinton is April 3, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 15.
When is the first frost in Clinton?
The first frost in fall usually comes around November 8. One year in ten it arrives before October 24.
How long is the growing season in Clinton?
About 217 days between the average last and first frost.
When should I plant tomatoes in Clinton?
Plant tomato seedlings outside from April 10 to April 24. Start seeds indoors six to eight weeks earlier.
Nearby in Maryland
- Camp SpringsApr 3
- Fort WashingtonApr 3
- SuitlandMar 29
- WaldorfApr 17
- LandoverMar 29
- HyattsvilleMar 29
- ChillumMar 29
- BowieApr 22
- GreenbeltApr 10
- Langley ParkApr 10
- College ParkApr 10
- Silver SpringApr 10