Lynden, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lynden, a city in Whatcom County, Washington.
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 for Lynden
| 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) for Lynden (48.950, -122.455). Updated through the day.
Growing snapshot for Lynden
Last spring frost
Apr 18
First fall frost
Oct 18
Growing season
185 days
Hardiness zone
8a
More local growing data for Lynden: nearby ZIP 98264 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Acme
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Blaine
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Everson
Ferndale
Geneva
Glacier
Kendall
Maple Falls
Marietta-Alderwood
Nooksack
Peaceful Valley
Point Roberts
Sudden Valley
Sumas
Climate data from the nearest NOAA station, Clearbrook, Wa (5.8 mi from Lynden). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.