Lake Cassidy, WA Weather & Growing Conditions
This Afternoon
57°F
Mostly Cloudy
Mostly cloudy. High near 57, with temperatures falling to around 52 in the afternoon. Northwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 57°F | Mostly Cloudy | 1 mph NW | 4% |
| Tonight | 37°F | Patchy Fog | 2 mph E | 4% |
| Wednesday | 60°F | Patchy Fog then Slight Chance Light Rain | 3 mph SE | 16% |
| Wednesday Night | 46°F | Light Rain | 3 to 7 mph SSE | 96% |
| Thursday | 56°F | Chance Light Rain | 5 mph SSE | 54% |
| Thursday Night | 45°F | Light Rain | 3 to 7 mph SE | 83% |
| Friday | 56°F | Light Rain | 3 to 8 mph SE | 83% |
| Friday Night | 45°F | Chance Light Rain | 5 mph SE | 49% |
| Saturday | 63°F | Chance Light Rain | 3 mph SE | 33% |
| Saturday Night | 48°F | Light Rain | 3 to 12 mph SSE | 80% |
| Sunday | 56°F | Light Rain | 2 to 10 mph S | 80% |
| Sunday Night | 42°F | Chance Light Rain | 5 mph SE | 36% |
| Monday | 57°F | Chance Light Rain | 3 mph SE | 52% |
| Monday Night | 45°F | Light Rain Likely | 3 to 9 mph SE | 70% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lake Cassidy, WA
Last spring frost
Mar 24
First fall frost
Nov 2
Growing season
223 days
Hardiness zone
8b
Explore more for Lake Cassidy, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Everett, Wa (6.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.