Medical Lake, WA Weather & Growing Conditions
Today
50°F
Sunny
Sunny. High near 50, with temperatures falling to around 43 in the afternoon. South wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Sunny | 3 mph S | 1% |
| Tonight | 35°F | Chance Rain Showers | 1 to 5 mph S | 26% |
| Thursday | 49°F | Chance Rain Showers then Partly Sunny | 3 to 8 mph SW | 26% |
| Thursday Night | 36°F | Partly Cloudy | 6 mph SE | 0% |
| Friday | 50°F | Slight Chance Rain Showers | 6 to 9 mph S | 15% |
| Friday Night | 38°F | Slight Chance Rain Showers | 3 to 7 mph S | 19% |
| Saturday | 60°F | Partly Sunny | 3 to 7 mph E | 6% |
| Saturday Night | 41°F | Mostly Cloudy | 5 to 10 mph SE | 8% |
| Sunday | 54°F | Mostly Cloudy | 8 to 14 mph SW | 8% |
| Sunday Night | 36°F | Mostly Cloudy | 3 to 8 mph S | 4% |
| Monday | 52°F | Mostly Cloudy | 2 to 7 mph E | 8% |
| Monday Night | 37°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph E | 22% |
| Tuesday | 55°F | Chance Rain Showers | 5 to 8 mph SE | 28% |
| Tuesday Night | 40°F | Chance Rain Showers | 5 to 9 mph SE | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Medical Lake, WA
Last spring frost
May 31
First fall frost
Sep 12
Growing season
101 days
Hardiness zone
6b
Explore more for Medical Lake, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Harrington, Wa (14.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.