Northport, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Northport, a town in Stevens County, Washington.
Tonight
49°F
Mostly Clear
Mostly clear, with a low around 49. North wind around 1 mph.
7-day forecast for Northport
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Clear | 1 mph N | 0% |
| Saturday | 80°F | Mostly Sunny | 2 mph NE | 0% |
| Saturday Night | 50°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 80°F | Sunny | 2 mph SW | 0% |
| Sunday Night | 50°F | Mostly Clear | 1 mph NE | 0% |
| Monday | 82°F | Sunny | 0 to 3 mph SE | 0% |
| Monday Night | 51°F | Partly Cloudy | 2 mph SE | 0% |
| Tuesday | 79°F | Mostly Sunny | 0 to 3 mph SW | 1% |
| Tuesday Night | 50°F | Mostly Cloudy | 0 to 3 mph S | 1% |
| Wednesday | 75°F | Mostly Sunny | 0 to 5 mph SW | 2% |
| Wednesday Night | 49°F | Mostly Cloudy | 0 to 5 mph SE | 2% |
| Thursday | 73°F | Partly Sunny | 2 mph SW | 4% |
| Thursday Night | 49°F | Slight Chance Rain Showers | 2 mph S | 19% |
| Friday | 69°F | Chance Rain Showers | 2 mph NW | 25% |
Forecast source: National Weather Service (api.weather.gov) for Northport (48.916, -117.780). Updated through the day.
Growing snapshot for Northport
Last spring frost
May 8
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
6b
More local growing data for Northport: nearby ZIP 99157 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Addy
Barney's Junction
Chewelah
Clayton
Colville
Inchelium
Kettle Falls
Loon Lake
Marcus
Springdale
Valley
Climate data from the nearest NOAA station, Northport, Wa (2 mi from Northport). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.