Blaine, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blaine, a city in Whatcom County, Washington.
Overnight
55°F
Mostly Clear
Mostly clear, with a low around 55. North northwest wind around 1 mph.
7-day forecast for Blaine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Mostly Clear | 1 mph NNW | 0% |
| Tuesday | 79°F | Sunny then Patchy Smoke | 1 to 6 mph NW | 0% |
| Tuesday Night | 58°F | Patchy Smoke then Mostly Clear | 1 to 5 mph W | 0% |
| Wednesday | 81°F | Sunny then Patchy Smoke | 1 to 6 mph WNW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 1 to 5 mph SSE | 0% |
| Thursday | 78°F | Sunny | 1 to 5 mph SSE | 0% |
| Thursday Night | 60°F | Mostly Clear | 1 to 5 mph SSW | 0% |
| Friday | 76°F | Sunny | 2 to 6 mph S | 0% |
| Friday Night | 59°F | Mostly Clear | 1 to 5 mph S | 0% |
| Saturday | 74°F | Sunny | 1 to 6 mph SSW | 0% |
| Saturday Night | 57°F | Mostly Clear | 5 mph S | 0% |
| Sunday | 72°F | Mostly Sunny | 2 to 6 mph SSW | 0% |
| Sunday Night | 56°F | Partly Cloudy | 1 to 5 mph SSW | 1% |
| Monday | 72°F | Mostly Sunny | 1 to 6 mph WSW | 1% |
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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Maple Falls
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Nooksack
Peaceful Valley
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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 Aug 4, 2026.