Lyman, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lyman, a town in Skagit County, Washington.
Today
74°F
Mostly Sunny
Mostly sunny. High near 74, with temperatures falling to around 72 in the afternoon. South southwest wind 0 to 3 mph.
7-day forecast for Lyman
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Mostly Sunny | 0 to 3 mph SSW | 0% |
| Tonight | 52°F | Mostly Clear | 0 to 3 mph SW | 0% |
| Sunday | 76°F | Mostly Sunny | 3 mph S | 0% |
| Sunday Night | 51°F | Partly Cloudy | 2 mph S | 0% |
| Monday | 73°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 51°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Tuesday | 70°F | Partly Sunny | 0 to 5 mph S | 0% |
| Tuesday Night | 49°F | Mostly Cloudy | 0 to 5 mph E | 12% |
| Wednesday | 69°F | Partly Sunny then Slight Chance Light Rain | 0 to 3 mph ENE | 19% |
| Wednesday Night | 49°F | Slight Chance Light Rain then Mostly Cloudy | 2 mph NE | 19% |
| Thursday | 68°F | Mostly Cloudy then Slight Chance Light Rain | 0 to 3 mph NW | 18% |
| Thursday Night | 48°F | Chance Light Rain | 0 to 3 mph N | 26% |
| Friday | 66°F | Chance Light Rain | 2 mph WNW | 26% |
| Friday Night | 47°F | Slight Chance Light Rain | 3 mph N | 16% |
Forecast source: National Weather Service (api.weather.gov) for Lyman (48.524, -122.066). Updated through the day.
Growing snapshot for Lyman
Last spring frost
Mar 27
First fall frost
Nov 6
Growing season
224 days
Hardiness zone
8b
More local growing data for Lyman: nearby ZIP 98263 weather · frost dates · planting calendar · Washington frost dates
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Sedro-Woolley
Climate data from the nearest NOAA station, Sedro-Woolley, Wa (8 mi from Lyman). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.