Lyman, WA Weather & Growing Conditions
Overnight
52°F
Mostly Cloudy
Mostly cloudy. Low around 52, with temperatures rising to around 54 overnight. North northeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Cloudy | 3 mph NNE | 0% |
| Saturday | 70°F | Mostly Sunny | 0 to 3 mph W | 0% |
| Saturday Night | 53°F | Mostly Clear | 2 mph N | 0% |
| Sunday | 71°F | Mostly Sunny | 1 to 5 mph NW | 0% |
| Sunday Night | 52°F | Partly Cloudy | 0 to 3 mph E | 0% |
| Monday | 68°F | Mostly Sunny | 5 mph SW | 0% |
| Monday Night | 51°F | Partly Cloudy | 1 to 5 mph S | 0% |
| Tuesday | 65°F | Partly Sunny | 5 mph SSW | 0% |
| Tuesday Night | 50°F | Mostly Cloudy | 1 to 5 mph SSE | 12% |
| Wednesday | 63°F | Partly Sunny then Slight Chance Light Rain | 3 mph WSW | 19% |
| Wednesday Night | 50°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph SSE | 19% |
| Thursday | 62°F | Mostly Cloudy then Slight Chance Light Rain | 1 to 5 mph NW | 16% |
| Thursday Night | 49°F | Chance Light Rain | 1 to 5 mph E | 26% |
| Friday | 61°F | Chance Light Rain | 3 mph SW | 26% |
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 (5.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.