Blaine, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blaine, a city in Whatcom County, Washington.
Today
53°F
Mostly Cloudy
Mostly cloudy. High near 53, with temperatures falling to around 51 in the afternoon. North northwest wind around 2 mph.
7-day forecast for Blaine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 53°F | Mostly Cloudy | 2 mph NNW | 6% |
| Tonight | 38°F | Partly Cloudy | 2 mph ENE | 6% |
| Wednesday | 56°F | Mostly Sunny then Chance Light Rain | 3 mph ESE | 29% |
| Wednesday Night | 48°F | Light Rain | 2 to 8 mph SE | 96% |
| Thursday | 55°F | Chance Light Rain | 7 mph SSE | 34% |
| Thursday Night | 47°F | Light Rain | 5 to 13 mph SE | 91% |
| Friday | 54°F | Light Rain | 7 to 14 mph SSE | 91% |
| Friday Night | 46°F | Chance Light Rain | 7 mph ESE | 45% |
| Saturday | 57°F | Light Rain Likely | 7 mph ESE | 58% |
| Saturday Night | 49°F | Light Rain | 6 to 15 mph SSE | 84% |
| Sunday | 55°F | Light Rain Likely | 6 to 13 mph S | 72% |
| Sunday Night | 43°F | Chance Light Rain | 6 mph SE | 31% |
| Monday | 54°F | Light Rain Likely | 6 mph E | 59% |
| Monday Night | 46°F | Light Rain | 6 to 12 mph ESE | 79% |
Forecast source: National Weather Service (api.weather.gov) for Blaine (48.987, -122.749). Updated through the day.
Growing snapshot for Blaine
Last spring frost
Mar 31
First fall frost
Nov 4
Growing season
219 days
Hardiness zone
8b
More local growing data for Blaine: nearby ZIP 98230 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Acme
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Ferndale
Geneva
Glacier
Kendall
Lynden
Maple Falls
Marietta-Alderwood
Nooksack
Peaceful Valley
Point Roberts
Sudden Valley
Sumas
Climate data from the nearest NOAA station, Blaine, Wa (4.3 mi from Blaine). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.