Arlington Heights, WA Weather & Growing Conditions
Tonight
43°F
Partly Cloudy
Partly cloudy, with a low around 43. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Partly Cloudy | 5 mph SE | 5% |
| Wednesday | 59°F | Mostly Sunny | 1 to 5 mph SE | 12% |
| Wednesday Night | 47°F | Light Rain | 3 to 8 mph SSE | 99% |
| Thursday | 53°F | Light Rain Likely | 5 mph SSE | 65% |
| Thursday Night | 46°F | Light Rain | 3 to 8 mph SE | 91% |
| Friday | 53°F | Light Rain | 3 to 9 mph SE | 91% |
| Friday Night | 48°F | Chance Light Rain | 3 to 7 mph ESE | 50% |
| Saturday | 60°F | Chance Light Rain | 3 to 7 mph ESE | 35% |
| Saturday Night | 48°F | Rain | 3 to 13 mph SSE | 87% |
| Sunday | 53°F | Light Rain | 2 to 12 mph S | 87% |
| Sunday Night | 45°F | Chance Light Rain | 2 to 8 mph ESE | 43% |
| Monday | 55°F | Chance Light Rain | 3 to 7 mph ESE | 52% |
| Monday Night | 47°F | Light Rain Likely | 3 to 10 mph ESE | 74% |
| Tuesday | 57°F | Light Rain Likely | 6 to 9 mph SE | 74% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Arlington Heights, WA
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
181 days
Hardiness zone
8b
Explore more for Arlington Heights, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Arlington, Wa (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.