Last frost date in Clarksville, TN

Average last frost
April 3

In Clarksville, the last spring frost comes around April 3 in an average year. Wait until April 20 if you want 90% odds of no more frost. The first fall frost usually arrives about November 1, which leaves 212 frost-free days. An early freeze before October 20 happens one year in ten.

Safe after (10% risk)
Apr 20
Average first frost
Nov 1
Frost-free season
212 days
Hard freeze (28°F) ends
Mar 22
Next 7 nights in Clarksville

No frost in the next 7 nights

National Weather Service forecast, updated Oct 22, 12:57 UTC

  1. ThuOct 2244°
  2. FriOct 2342°
  3. SatOct 2444°
  4. SunOct 2545°
  5. MonOct 2645°
  6. TueOct 2748°
  7. WedOct 2846°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Apr 3First frost Nov 1212 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND212 frost-free days
Frost risk through the year at Clarksville Wwtp, 1.4 miles from Clarksville.

Planting calendar for Clarksville

Windows count forward or back from the average frost dates above. Click a crop for dates across Tennessee.

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
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
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
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
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsOct 18–Nov 22
GarlicOct 11–Nov 15
Daffodil bulbsOct 4–Nov 15
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesMar 6–Mar 20
AsparagusMar 6–Mar 20

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FMar 19Apr 3Apr 20Oct 20Nov 1Nov 14
Hard freeze, 28°FMar 2Mar 22Apr 8Nov 1Nov 11Nov 30

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 Clarksville Wwtp (USC00401790) sits 1.4 miles from the center of Clarksville at 402 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 Clarksville, TN?

The average last frost date in Clarksville is April 3, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 20.

When is the first frost in Clarksville?

The first frost in fall usually comes around November 1. One year in ten it arrives before October 20.

How long is the growing season in Clarksville?

About 212 days between the average last and first frost.

When should I plant tomatoes in Clarksville?

Plant tomato seedlings outside from April 10 to April 24. Start seeds indoors six to eight weeks earlier.

Nearby in Tennessee

All 33 cities in Tennessee