Lynden, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lynden, a city in Whatcom County, Washington.
Tonight
50°F
Mostly Cloudy
Mostly cloudy, with a low around 50. East northeast wind around 1 mph.
7-day forecast for Lynden
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Cloudy | 1 mph ENE | 0% |
| Saturday | 73°F | Partly Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 49°F | Partly Cloudy | 0 to 3 mph WNW | 0% |
| Sunday | 74°F | Mostly Sunny | 0 to 5 mph W | 0% |
| Sunday Night | 49°F | Partly Cloudy | 0 to 5 mph WSW | 0% |
| Monday | 72°F | Mostly Sunny | 0 to 5 mph SSW | 0% |
| Monday Night | 49°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Tuesday | 70°F | Partly Sunny | 0 to 6 mph SW | 0% |
| Tuesday Night | 48°F | Mostly Cloudy | 2 to 6 mph S | 14% |
| Wednesday | 68°F | Partly Sunny | 1 to 5 mph SSW | 14% |
| Wednesday Night | 49°F | Mostly Cloudy | 0 to 5 mph SSW | 13% |
| Thursday | 67°F | Partly Sunny | 0 to 5 mph N | 13% |
| Thursday Night | 48°F | Slight Chance Light Rain | 0 to 5 mph SW | 23% |
| Friday | 67°F | Slight Chance Light Rain | 0 to 6 mph WSW | 23% |
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
Bellingham
Birch Bay
Blaine
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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 Sep 19, 2026.