Last frost date in Springfield, OR
The average last frost in Springfield is April 11. By May 9 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about October 23, which leaves 196 frost-free days. An early freeze before October 6 happens one year in ten.
- Safe after (10% risk)
- May 9
- Average first frost
- Oct 23
- Frost-free season
- 196 days
- Hard freeze (28°F) ends
- Mar 3
Frost likely Fri night, low 31°F
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2236°possible frost
- FriOct 2331°frost
- SatOct 2434°possible frost
- SunOct 2537°
- MonOct 2636°possible frost
- TueOct 2735°possible frost
Planting calendar for Springfield
Windows count forward or back from the average frost dates above. Click a crop for dates across Oregon.
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 9–Nov 13
GarlicOct 2–Nov 6
Daffodil bulbsSep 25–Nov 6
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 15 | Apr 11 | May 9 | Oct 6 | Oct 23 | Nov 13 |
| Hard freeze, 28°F | Feb 2 | Mar 3 | Mar 30 | Oct 20 | Nov 11 | Dec 12 |
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 Eugene Mahlon Sweet Airport (USW00024221) sits 13.0 miles from the center of Springfield at 353 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 Springfield, OR?
The average last frost date in Springfield is April 11, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 9.
When is the first frost in Springfield?
The first frost in fall usually comes around October 23. One year in ten it arrives before October 6.
How long is the growing season in Springfield?
About 196 days between the average last and first frost.
When should I plant tomatoes in Springfield?
Plant tomato seedlings outside from April 18 to May 2. Start seeds indoors six to eight weeks earlier.