Santiago, WA Weather & Growing Conditions
Today
80°F
Sunny
Sunny. High near 80, with temperatures falling to around 76 in the afternoon. West northwest wind 0 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Sunny | 0 to 6 mph WNW | 0% |
| Tonight | 57°F | Mostly Clear then Patchy Smoke | 0 to 6 mph NNW | 0% |
| Wednesday | 78°F | Patchy Smoke | 0 to 5 mph WNW | 0% |
| Wednesday Night | 56°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Thursday | 76°F | Sunny | 0 to 5 mph WNW | 0% |
| Thursday Night | 55°F | Partly Cloudy | 5 mph NW | 0% |
| Friday | 74°F | Mostly Sunny | 2 to 8 mph NW | 0% |
| Friday Night | 56°F | Mostly Clear | 8 mph NW | 0% |
| Saturday | 70°F | Mostly Sunny | 6 to 9 mph NW | 0% |
| Saturday Night | 55°F | Partly Cloudy | 5 to 9 mph NW | 0% |
| Sunday | 67°F | Mostly Sunny | 5 to 8 mph WNW | 0% |
| Sunday Night | 54°F | Partly Cloudy | 3 to 8 mph NW | 0% |
| Monday | 68°F | Mostly Sunny | 3 to 7 mph NW | 0% |
| Monday Night | 54°F | Partly Cloudy | 2 to 7 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Santiago, WA
Last spring frost
Apr 26
First fall frost
Oct 22
Growing season
180 days
Hardiness zone
8b
Explore more for Santiago, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Humptulips Salmon Hatchery, Wa (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.