Lyman, WA Weather & Growing Conditions
Today
60°F
Mostly Sunny then Slight Chance Light Rain
A slight chance of rain after 4pm. Mostly sunny. High near 60, with temperatures falling to around 55 in the afternoon. East southeast wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph ESE | 22% |
| Tonight | 45°F | Light Rain | 5 to 15 mph SSW | 97% |
| Thursday | 56°F | Chance Light Rain then Partly Sunny | 5 to 8 mph S | 30% |
| Thursday Night | 44°F | Light Rain | 7 to 14 mph SE | 94% |
| Friday | 54°F | Light Rain | 7 to 16 mph ESE | 94% |
| Friday Night | 45°F | Light Rain | 7 to 10 mph ESE | 77% |
| Saturday | 61°F | Chance Light Rain | 8 to 12 mph ESE | 42% |
| Saturday Night | 46°F | Rain | 8 to 16 mph SE | 84% |
| Sunday | 54°F | Light Rain | 0 to 12 mph S | 76% |
| Sunday Night | 39°F | Chance Light Rain | 0 to 9 mph ESE | 26% |
| Monday | 54°F | Chance Light Rain | 8 mph E | 46% |
| Monday Night | 44°F | Light Rain Likely | 7 to 15 mph ESE | 68% |
| Tuesday | 56°F | Light Rain Likely | 10 to 14 mph ESE | 68% |
| Tuesday Night | 44°F | Light Rain Likely | 10 to 16 mph ESE | 60% |
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 Nov 4, 2026.