Lynden, WA Weather & Growing Conditions
Today
86°F
Patchy Smoke
Patchy smoke after 11am. Sunny, with a high near 86. West northwest wind 1 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Patchy Smoke | 1 to 6 mph WNW | 0% |
| Tonight | 57°F | Patchy Smoke then Mostly Clear | 0 to 5 mph SSW | 0% |
| Wednesday | 89°F | Sunny then Patchy Smoke | 0 to 6 mph WSW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 1 to 6 mph SSW | 0% |
| Thursday | 88°F | Sunny | 1 to 6 mph SSW | 0% |
| Thursday Night | 60°F | Mostly Clear | 1 to 6 mph SSW | 0% |
| Friday | 83°F | Sunny | 1 to 8 mph SSW | 0% |
| Friday Night | 58°F | Mostly Clear | 1 to 7 mph SSW | 0% |
| Saturday | 80°F | Sunny | 1 to 8 mph SSW | 0% |
| Saturday Night | 56°F | Mostly Clear | 1 to 8 mph S | 0% |
| Sunday | 76°F | Mostly Sunny | 1 to 8 mph SSW | 0% |
| Sunday Night | 55°F | Mostly Clear | 1 to 7 mph S | 3% |
| Monday | 76°F | Mostly Sunny | 1 to 7 mph SSW | 3% |
| Monday Night | 55°F | Partly Cloudy | 0 to 7 mph S | 2% |
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 Aug 4, 2026.