Lynden, WA Weather & Growing Conditions
Tonight
50°F
Partly Cloudy
Partly cloudy, with a low around 50. East wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Partly Cloudy | 2 mph E | 0% |
| Saturday | 73°F | Partly Sunny | 1 to 5 mph SW | 0% |
| Saturday Night | 50°F | Partly Cloudy | 0 to 3 mph SSW | 0% |
| Sunday | 75°F | Mostly Sunny | 0 to 5 mph WSW | 0% |
| Sunday Night | 49°F | Partly Cloudy | 0 to 5 mph SSW | 0% |
| Monday | 72°F | Mostly Sunny | 0 to 6 mph SW | 1% |
| Monday Night | 50°F | Partly Cloudy | 0 to 6 mph S | 1% |
| Tuesday | 70°F | Mostly Sunny | 0 to 6 mph SSW | 1% |
| Tuesday Night | 48°F | Partly Cloudy | 1 to 6 mph SSE | 7% |
| Wednesday | 69°F | Partly Sunny | 1 to 5 mph SSW | 7% |
| Wednesday Night | 50°F | Mostly Cloudy | 1 to 5 mph W | 13% |
| Thursday | 71°F | Partly Sunny then Slight Chance Light Rain | 1 to 5 mph NNE | 19% |
| Thursday Night | 51°F | Chance Light Rain | 1 to 5 mph SSW | 36% |
| Friday | 68°F | Chance Light Rain | 1 to 5 mph S | 36% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lynden, WA
Last spring frost
Apr 18
First fall frost
Oct 18
Growing season
185 days
Hardiness zone
8a
Explore more for Lynden, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Clearbrook, Wa (5.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.