Last frost date in Bartlesville, OK
Expect the last frost in Bartlesville around April 11. Frost after April 30 happens in only one year out of ten. The first fall frost usually arrives about October 24, which leaves 195 frost-free days. An early freeze before October 8 happens one year in ten.
- Safe after (10% risk)
- Apr 30
- Average first frost
- Oct 24
- Frost-free season
- 195 days
- Hard freeze (28°F) ends
- Apr 1
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2251°
- FriOct 2352°
- SatOct 2454°
- SunOct 2554°
- MonOct 2651°
- TueOct 2747°
- WedOct 2850°
Planting calendar for Bartlesville
Windows count forward or back from the average frost dates above. Click a crop for dates across Oklahoma.
TomatoesApr 18–May 2
PumpkinsApr 25–May 9
SunflowersApr 11–May 2
CucumbersApr 25–May 2
CornApr 18–May 2
Sweet potatoesMay 2–May 16
WatermelonApr 25–May 9
Green beansApr 18–May 9
ZucchiniApr 18–May 2
OkraMay 2–May 16
PeppersApr 25–May 9
BasilApr 18–May 2
Butternut squashApr 18–May 2
CantaloupeApr 25–May 9
EggplantApr 25–May 9
PotatoesMar 14–Mar 28
OnionsFeb 28–Mar 21
CarrotsMar 21–Apr 25
LettuceMar 28–Apr 18
BroccoliMar 14–Mar 28
BeetsMar 14–Apr 25
PeasFeb 28–Mar 14
CabbageMar 14–Mar 28
RadishesMar 7–Apr 18
Brussels sproutsMar 28–Apr 11
SpinachFeb 28–Mar 21
CilantroMar 28–Apr 18
KaleMar 14–Mar 28
Collard greensMar 14–Mar 28
TurnipsMar 14–Mar 28
DillApr 11–Apr 25
CeleryApr 18–Apr 25
CauliflowerMar 28–Apr 11
LeeksMar 28–Apr 11
Swiss chardMar 28–Apr 25
ParsleyMar 28–Apr 18
Tulip bulbsOct 10–Nov 14
GarlicOct 3–Nov 7
Daffodil bulbsSep 26–Nov 7
StrawberriesMar 14–Mar 28
AsparagusMar 14–Mar 28Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Mar 27 | Apr 11 | Apr 30 | Oct 8 | Oct 24 | Nov 6 |
| Hard freeze, 28°F | Mar 15 | Apr 1 | Apr 15 | Oct 19 | Nov 2 | Nov 15 |
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 Bartlesville 3 (USC00340546) sits 3.9 miles from the center of Bartlesville at 715 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 Bartlesville, OK?
The average last frost date in Bartlesville is April 11, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 30.
When is the first frost in Bartlesville?
The first frost in fall usually comes around October 24. One year in ten it arrives before October 8.
How long is the growing season in Bartlesville?
About 195 days between the average last and first frost.
When should I plant tomatoes in Bartlesville?
Plant tomato seedlings outside from April 18 to May 2. Start seeds indoors six to eight weeks earlier.
Nearby in Oklahoma
- OwassoMar 31
- ClaremoreApr 7
- TulsaMar 31
- Sand SpringsMar 30
- Broken ArrowApr 1
- JenksMar 30
- SapulpaMar 30
- BixbyApr 1
- Ponca CityApr 10
- StillwaterApr 5
- MuskogeeApr 7
- EnidApr 6