McKenna, WA Weather & Growing Conditions
Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 75°F | Mostly Cloudy | 2 mph NNW | 0% |
| Saturday Night | 49°F | Partly Cloudy | 1 mph N | 0% |
| Sunday | 76°F | Mostly Sunny | 2 mph N | 0% |
| Sunday Night | 49°F | Mostly Clear | 2 mph N | 0% |
| Monday | 73°F | Mostly Sunny | 0 to 3 mph NW | 0% |
| Monday Night | 49°F | Partly Cloudy | 0 to 3 mph NNW | 0% |
| Tuesday | 70°F | Partly Sunny | 2 mph NNW | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 2 mph WSW | 1% |
| Wednesday | 69°F | Mostly Sunny | 2 mph NNW | 3% |
| Wednesday Night | 49°F | Partly Cloudy | 2 mph NNE | 4% |
| Thursday | 72°F | Partly Sunny | 2 mph NNW | 14% |
| Thursday Night | 50°F | Slight Chance Light Rain | 2 mph WSW | 24% |
| Friday | 68°F | Slight Chance Light Rain | 1 to 6 mph WSW | 23% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for McKenna, WA
Last spring frost
Apr 29
First fall frost
Oct 14
Growing season
169 days
Hardiness zone
8b
Explore more for McKenna, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Olympia Ap, Wa (21.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.