Last frost date in Marietta, GA
Expect the last frost in Marietta around March 27. Frost after April 12 happens in only one year out of ten. The first fall frost usually arrives about November 7, which leaves 225 frost-free days. An early freeze before October 27 happens one year in ten.
- Safe after (10% risk)
- Apr 12
- Average first frost
- Nov 7
- Frost-free season
- 225 days
- Hard freeze (28°F) ends
- Mar 14
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2249°
- FriOct 2348°
- SatOct 2446°
- SunOct 2546°
- MonOct 2646°
- TueOct 2748°
- WedOct 2848°
Planting calendar for Marietta
Windows count forward or back from the average frost dates above. Click a crop for dates across Georgia.
TomatoesApr 3–Apr 17
PumpkinsApr 10–Apr 24
SunflowersMar 27–Apr 17
CucumbersApr 10–Apr 17
CornApr 3–Apr 17
Sweet potatoesApr 17–May 1
WatermelonApr 10–Apr 24
Green beansApr 3–Apr 24
ZucchiniApr 3–Apr 17
OkraApr 17–May 1
PeppersApr 10–Apr 24
BasilApr 3–Apr 17
Butternut squashApr 3–Apr 17
CantaloupeApr 10–Apr 24
EggplantApr 10–Apr 24
PotatoesFeb 27–Mar 13
OnionsFeb 13–Mar 6
CarrotsMar 6–Apr 10
LettuceMar 13–Apr 3
BroccoliFeb 27–Mar 13
BeetsFeb 27–Apr 10
PeasFeb 13–Feb 27
CabbageFeb 27–Mar 13
RadishesFeb 20–Apr 3
Brussels sproutsMar 13–Mar 27
SpinachFeb 13–Mar 6
CilantroMar 13–Apr 3
KaleFeb 27–Mar 13
Collard greensFeb 27–Mar 13
TurnipsFeb 27–Mar 13
DillMar 27–Apr 10
CeleryApr 3–Apr 10
CauliflowerMar 13–Mar 27
LeeksMar 13–Mar 27
Swiss chardMar 13–Apr 10
ParsleyMar 13–Apr 3
Tulip bulbsOct 24–Nov 28
GarlicOct 17–Nov 21
Daffodil bulbsOct 10–Nov 21
StrawberriesFeb 27–Mar 13
AsparagusFeb 27–Mar 13Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Mar 9 | Mar 27 | Apr 12 | Oct 27 | Nov 7 | Nov 26 |
| Hard freeze, 28°F | Feb 21 | Mar 14 | Mar 31 | Nov 4 | Nov 19 | Dec 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 Mableton 1 N (USC00095404) sits 7.2 miles from the center of Marietta at 980 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 Marietta, GA?
The average last frost date in Marietta is March 27, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 12.
When is the first frost in Marietta?
The first frost in fall usually comes around November 7. One year in ten it arrives before October 27.
How long is the growing season in Marietta?
About 225 days between the average last and first frost.
When should I plant tomatoes in Marietta?
Plant tomato seedlings outside from April 3 to April 17. Start seeds indoors six to eight weeks earlier.
Nearby in Georgia
- SmyrnaMar 27
- KennesawApr 2
- MabletonMar 27
- Sandy SpringsMar 25
- WoodstockApr 2
- AcworthApr 2
- DunwoodyMar 25
- BrookhavenMar 25
- ChambleeMar 25
- AtlantaMar 24
- Holly SpringsApr 2
- AlpharettaMar 25