Last frost date in Rolla, MO
In Rolla, the last spring frost comes around April 5 in an average year. Wait until April 22 if you want 90% odds of no more frost. The first fall frost usually arrives about November 1, which leaves 207 frost-free days. An early freeze before October 18 happens one year in ten.
- Safe after (10% risk)
- Apr 22
- Average first frost
- Nov 1
- Frost-free season
- 207 days
- Hard freeze (28°F) ends
- Mar 26
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2248°
- FriOct 2347°
- SatOct 2449°
- SunOct 2549°
- MonOct 2648°
- TueOct 2744°
- WedOct 2846°
Planting calendar for Rolla
Windows count forward or back from the average frost dates above. Click a crop for dates across Missouri.
TomatoesApr 12–Apr 26
PumpkinsApr 19–May 3
SunflowersApr 5–Apr 26
CucumbersApr 19–Apr 26
CornApr 12–Apr 26
Sweet potatoesApr 26–May 10
WatermelonApr 19–May 3
Green beansApr 12–May 3
ZucchiniApr 12–Apr 26
OkraApr 26–May 10
PeppersApr 19–May 3
BasilApr 12–Apr 26
Butternut squashApr 12–Apr 26
CantaloupeApr 19–May 3
EggplantApr 19–May 3
PotatoesMar 8–Mar 22
OnionsFeb 22–Mar 15
CarrotsMar 15–Apr 19
LettuceMar 22–Apr 12
BroccoliMar 8–Mar 22
BeetsMar 8–Apr 19
PeasFeb 22–Mar 8
CabbageMar 8–Mar 22
RadishesMar 1–Apr 12
Brussels sproutsMar 22–Apr 5
SpinachFeb 22–Mar 15
CilantroMar 22–Apr 12
KaleMar 8–Mar 22
Collard greensMar 8–Mar 22
TurnipsMar 8–Mar 22
DillApr 5–Apr 19
CeleryApr 12–Apr 19
CauliflowerMar 22–Apr 5
LeeksMar 22–Apr 5
Swiss chardMar 22–Apr 19
ParsleyMar 22–Apr 12
Tulip bulbsOct 18–Nov 22
GarlicOct 11–Nov 15
Daffodil bulbsOct 4–Nov 15
StrawberriesMar 8–Mar 22
AsparagusMar 8–Mar 22Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Mar 21 | Apr 5 | Apr 22 | Oct 18 | Nov 1 | Nov 15 |
| Hard freeze, 28°F | Mar 10 | Mar 26 | Apr 10 | Oct 28 | Nov 10 | Nov 28 |
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 Rolla Missouri S&t (USC00237263) sits 1.1 miles from the center of Rolla at 1,173 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 Rolla, MO?
The average last frost date in Rolla is April 5, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 22.
When is the first frost in Rolla?
The first frost in fall usually comes around November 1. One year in ten it arrives before October 18.
How long is the growing season in Rolla?
About 207 days between the average last and first frost.
When should I plant tomatoes in Rolla?
Plant tomato seedlings outside from April 12 to April 26. Start seeds indoors six to eight weeks earlier.
Nearby in Missouri
- Jefferson CityApr 8
- WildwoodApr 12
- ColumbiaApr 5
- WentzvilleApr 10
- BallwinApr 4
- O'FallonApr 10
- ChesterfieldApr 4
- ArnoldApr 9
- KirkwoodApr 1
- St. PetersApr 9
- OakvilleApr 6
- MehlvilleApr 6