Lyman, WA Weather & Growing Conditions
Tonight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. South southeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Partly Cloudy | 2 mph SSE | 1% |
| Saturday | 75°F | Partly Sunny | 0 to 3 mph WSW | 1% |
| Saturday Night | 52°F | Partly Cloudy | 0 to 3 mph E | 0% |
| Sunday | 76°F | Sunny | 0 to 3 mph N | 0% |
| Sunday Night | 51°F | Mostly Clear | 0 to 3 mph N | 0% |
| Monday | 72°F | Mostly Sunny | 0 to 5 mph WSW | 1% |
| Monday Night | 49°F | Partly Cloudy | 0 to 5 mph NNE | 1% |
| Tuesday | 69°F | Mostly Sunny | 0 to 6 mph NW | 1% |
| Tuesday Night | 49°F | Partly Cloudy | 0 to 3 mph E | 4% |
| Wednesday | 69°F | Partly Sunny | 2 mph WNW | 8% |
| Wednesday Night | 51°F | Mostly Cloudy | 0 to 3 mph N | 13% |
| Thursday | 72°F | Slight Chance Light Rain | 2 mph NE | 17% |
| Thursday Night | 51°F | Chance Light Rain | 0 to 5 mph ESE | 37% |
| Friday | 67°F | Chance Light Rain | 3 mph S | 37% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lyman, WA
Last spring frost
Mar 27
First fall frost
Nov 6
Growing season
224 days
Hardiness zone
8b
Explore more for Lyman, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Sedro-Woolley, Wa (8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.