St. John, WA Weather & Growing Conditions
Today
88°F
Areas Of Smoke then Haze
Areas of smoke before 8am, then haze and areas of smoke between 8am and 9am, then smoke and haze between 9am and 10am, then haze and areas of smoke. Sunny, with a high near 88. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Areas Of Smoke then Haze | 5 mph NE | 0% |
| Tonight | 49°F | Haze | 3 mph NE | 0% |
| Wednesday | 94°F | Patchy Smoke | 3 mph SE | 0% |
| Wednesday Night | 53°F | Areas Of Smoke then Clear | 2 mph E | 0% |
| Thursday | 98°F | Sunny | 2 to 6 mph S | 0% |
| Thursday Night | 57°F | Mostly Clear | 1 to 5 mph S | 0% |
| Friday | 97°F | Sunny | 5 to 12 mph SW | 0% |
| Friday Night | 57°F | Mostly Clear | 3 to 10 mph SW | 0% |
| Saturday | 93°F | Sunny | 5 to 10 mph SW | 0% |
| Saturday Night | 55°F | Mostly Clear | 3 to 10 mph SW | 0% |
| Sunday | 88°F | Sunny | 6 to 10 mph SW | 0% |
| Sunday Night | 52°F | Mostly Clear | 3 to 8 mph S | 0% |
| Monday | 87°F | Sunny | 5 to 8 mph SW | 0% |
| Monday Night | 51°F | Mostly Clear | 2 to 6 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. John, WA
Last spring frost
Apr 29
First fall frost
Oct 4
Growing season
161 days
Hardiness zone
6b
Explore more for St. John, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, St John, Wa (3.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.