Last frost date in Broken Arrow, OK
Expect the last frost in Broken Arrow around April 1. Frost after April 20 happens in only one year out of ten. The first fall frost usually arrives about November 1, which leaves 212 frost-free days. An early freeze before October 16 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 17
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2253°
- FriOct 2354°
- SatOct 2455°
- SunOct 2554°
- MonOct 2652°
- TueOct 2749°
- WedOct 2852°
Planting calendar for Broken Arrow
Windows count forward or back from the average frost dates above. Click a crop for dates across Oklahoma.
TomatoesApr 8–Apr 22
PumpkinsApr 15–Apr 29
SunflowersApr 1–Apr 22
CucumbersApr 15–Apr 22
CornApr 8–Apr 22
Sweet potatoesApr 22–May 6
WatermelonApr 15–Apr 29
Green beansApr 8–Apr 29
ZucchiniApr 8–Apr 22
OkraApr 22–May 6
PeppersApr 15–Apr 29
BasilApr 8–Apr 22
Butternut squashApr 8–Apr 22
CantaloupeApr 15–Apr 29
EggplantApr 15–Apr 29
PotatoesMar 4–Mar 18
OnionsFeb 18–Mar 11
CarrotsMar 11–Apr 15
LettuceMar 18–Apr 8
BroccoliMar 4–Mar 18
BeetsMar 4–Apr 15
PeasFeb 18–Mar 4
CabbageMar 4–Mar 18
RadishesFeb 25–Apr 8
Brussels sproutsMar 18–Apr 1
SpinachFeb 18–Mar 11
CilantroMar 18–Apr 8
KaleMar 4–Mar 18
Collard greensMar 4–Mar 18
TurnipsMar 4–Mar 18
DillApr 1–Apr 15
CeleryApr 8–Apr 15
CauliflowerMar 18–Apr 1
LeeksMar 18–Apr 1
Swiss chardMar 18–Apr 15
ParsleyMar 18–Apr 8
Tulip bulbsOct 18–Nov 22
GarlicOct 11–Nov 15
Daffodil bulbsOct 4–Nov 15
StrawberriesMar 4–Mar 18
AsparagusMar 4–Mar 18Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Mar 12 | Apr 1 | Apr 20 | Oct 16 | Nov 1 | Nov 13 |
| Hard freeze, 28°F | Feb 28 | Mar 17 | Apr 7 | Oct 26 | Nov 9 | Nov 27 |
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 Bixby (USC00340782) sits 6.8 miles from the center of Broken Arrow at 605 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 Broken Arrow, OK?
The average last frost date in Broken Arrow is April 1, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 20.
When is the first frost in Broken Arrow?
The first frost in fall usually comes around November 1. One year in ten it arrives before October 16.
How long is the growing season in Broken Arrow?
About 212 days between the average last and first frost.
When should I plant tomatoes in Broken Arrow?
Plant tomato seedlings outside from April 8 to April 22. Start seeds indoors six to eight weeks earlier.
Nearby in Oklahoma
- BixbyApr 1
- TulsaMar 31
- JenksMar 30
- OwassoMar 31
- SapulpaMar 30
- Sand SpringsMar 30
- ClaremoreApr 7
- MuskogeeApr 7
- BartlesvilleApr 11
- StillwaterApr 5
- ShawneeMar 30
- Ponca CityApr 10