Last frost date in Graham, WA
The average last frost in Graham is April 11. By April 29 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about October 30, which leaves 202 frost-free days. An early freeze before October 13 happens one year in ten.
- Safe after (10% risk)
- Apr 29
- Average first frost
- Oct 30
- Frost-free season
- 202 days
- Hard freeze (28°F) ends
- Mar 16
Frost possible in low spots Fri night, low 33°F
Earlier than usual: the average first frost here is October 30.
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2239°
- FriOct 2333°possible frost
- SatOct 2437°
- SunOct 2538°
- MonOct 2638°
- TueOct 2737°
Planting calendar for Graham
Windows count forward or back from the average frost dates above. Click a crop for dates across Washington.
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 16–Nov 20
GarlicOct 9–Nov 13
Daffodil bulbsOct 2–Nov 13
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 23 | Apr 11 | Apr 29 | Oct 13 | Oct 30 | Nov 17 |
| Hard freeze, 28°F | Feb 19 | Mar 16 | Apr 8 | Oct 28 | Nov 14 | Dec 8 |
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 Mcmillin Rsvr (USC00455224) sits 7.1 miles from the center of Graham at 579 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 Graham, WA?
The average last frost date in Graham is April 11, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 29.
When is the first frost in Graham?
The first frost in fall usually comes around October 30. One year in ten it arrives before October 13.
How long is the growing season in Graham?
About 202 days between the average last and first frost.
When should I plant tomatoes in Graham?
Plant tomato seedlings outside from April 18 to May 2. Start seeds indoors six to eight weeks earlier.
Nearby in Washington
- FredericksonApr 11
- South HillApr 11
- SpanawayApr 11
- PuyallupApr 11
- ParklandMar 8
- Bonney LakeApr 11
- LakewoodMar 11
- TacomaMar 8
- University PlaceMar 11
- AuburnMar 20
- Federal WayMar 8
- CovingtonApr 20