Lynden, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lynden, a city in Whatcom County, Washington.
This Afternoon
55°F
Mostly Cloudy
Mostly cloudy. High near 55, with temperatures falling to around 51 in the afternoon. Northwest wind around 1 mph.
7-day forecast for Lynden
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 55°F | Mostly Cloudy | 1 mph NW | 6% |
| Tonight | 36°F | Partly Cloudy | 1 mph NE | 6% |
| Wednesday | 58°F | Mostly Sunny then Slight Chance Light Rain | 2 mph E | 22% |
| Wednesday Night | 46°F | Light Rain | 2 to 8 mph S | 96% |
| Thursday | 56°F | Chance Light Rain | 3 to 8 mph S | 46% |
| Thursday Night | 46°F | Light Rain | 3 to 9 mph SE | 90% |
| Friday | 54°F | Light Rain | 7 to 12 mph SSE | 90% |
| Friday Night | 45°F | Chance Light Rain | 3 to 7 mph ESE | 43% |
| Saturday | 59°F | Chance Light Rain | 7 mph ESE | 47% |
| Saturday Night | 48°F | Light Rain | 7 to 16 mph SSE | 80% |
| Sunday | 55°F | Light Rain | 6 to 12 mph S | 76% |
| Sunday Night | 41°F | Chance Light Rain | 6 mph SE | 33% |
| Monday | 54°F | Light Rain Likely | 6 mph E | 56% |
| Monday Night | 45°F | Light Rain | 6 to 9 mph ESE | 77% |
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
Custer
Deming
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 Nov 4, 2026.