Bonney Lake, WA Weather & Growing Conditions
Overnight
49°F
Mostly Cloudy
Mostly cloudy, with a low around 49. South wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Mostly Cloudy | 1 mph S | 0% |
| Saturday | 72°F | Partly Sunny | 2 mph NW | 0% |
| Saturday Night | 51°F | Mostly Clear | 1 mph N | 0% |
| Sunday | 73°F | Mostly Sunny | 2 mph NNW | 0% |
| Sunday Night | 50°F | Mostly Clear | 2 mph N | 0% |
| Monday | 71°F | Mostly Sunny | 2 mph NW | 0% |
| Monday Night | 50°F | Partly Cloudy | 1 mph NNE | 0% |
| Tuesday | 68°F | Partly Sunny | 2 mph NNW | 1% |
| Tuesday Night | 49°F | Partly Cloudy | 1 mph SSW | 1% |
| Wednesday | 67°F | Partly Sunny | 2 mph W | 13% |
| Wednesday Night | 49°F | Mostly Cloudy | 1 mph NW | 13% |
| Thursday | 64°F | Mostly Cloudy then Slight Chance Light Rain | 2 mph N | 19% |
| Thursday Night | 48°F | Slight Chance Light Rain | 2 mph N | 19% |
| Friday | 63°F | Slight Chance Light Rain then Partly Sunny | 2 mph NNW | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bonney Lake, WA
Last spring frost
Apr 11
First fall frost
Oct 30
Growing season
202 days
Hardiness zone
8b
Explore more for Bonney Lake, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Mcmillin Rsvr, Wa (5.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.