Dayton, WA Weather & Growing Conditions
Overnight
37°F
Partly Cloudy
Partly cloudy, with a low around 37. South wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 37°F | Partly Cloudy | 1 mph S | 2% |
| Wednesday | 50°F | Sunny | 0 to 3 mph SW | 2% |
| Wednesday Night | 40°F | Mostly Cloudy then Chance Rain Showers | 3 to 7 mph S | 47% |
| Thursday | 50°F | Chance Rain Showers then Partly Sunny | 6 to 14 mph SW | 47% |
| Thursday Night | 39°F | Mostly Clear | 5 to 8 mph S | 0% |
| Friday | 56°F | Partly Sunny | 2 to 6 mph S | 3% |
| Friday Night | 45°F | Mostly Cloudy | 2 to 8 mph S | 3% |
| Saturday | 63°F | Mostly Sunny | 5 mph SE | 1% |
| Saturday Night | 47°F | Mostly Cloudy then Slight Chance Rain Showers | 3 to 10 mph S | 22% |
| Sunday | 55°F | Slight Chance Rain Showers | 5 to 12 mph SW | 22% |
| Sunday Night | 42°F | Mostly Cloudy | 3 to 7 mph S | 5% |
| Monday | 55°F | Partly Sunny | 3 mph SW | 8% |
| Monday Night | 43°F | Slight Chance Rain Showers | 3 mph S | 24% |
| Tuesday | 57°F | Slight Chance Rain Showers | 5 mph S | 24% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dayton, WA
Last spring frost
Apr 28
First fall frost
Oct 13
Growing season
168 days
Hardiness zone
7a
Explore more for Dayton, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Dayton 1 Wsw, Wa (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.