Monroe, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monroe, a city in Snohomish County, Washington.
This Afternoon
58°F
Partly Sunny
Partly sunny. High near 58, with temperatures falling to around 52 in the afternoon. Northwest wind around 1 mph.
7-day forecast for Monroe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 58°F | Partly Sunny | 1 mph NW | 3% |
| Tonight | 38°F | Patchy Fog | 1 mph ENE | 3% |
| Wednesday | 60°F | Patchy Fog then Mostly Sunny | 1 mph SE | 14% |
| Wednesday Night | 47°F | Light Rain | 1 to 5 mph SE | 98% |
| Thursday | 57°F | Light Rain Likely | 3 mph SSE | 59% |
| Thursday Night | 46°F | Light Rain | 5 mph SE | 82% |
| Friday | 56°F | Light Rain | 5 mph SE | 82% |
| Friday Night | 47°F | Light Rain Likely | 2 mph ESE | 57% |
| Saturday | 63°F | Chance Light Rain | 2 mph SE | 30% |
| Saturday Night | 49°F | Rain | 1 to 7 mph SSE | 81% |
| Sunday | 56°F | Light Rain | 1 to 8 mph S | 81% |
| Sunday Night | 43°F | Chance Light Rain | 2 mph SE | 34% |
| Monday | 57°F | Chance Light Rain | 2 mph SE | 51% |
| Monday Night | 46°F | Light Rain Likely | 1 to 5 mph SE | 71% |
Forecast source: National Weather Service (api.weather.gov) for Monroe (47.860, -121.984). Updated through the day.
Growing snapshot for Monroe
Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
8b
More local growing data for Monroe: nearby ZIP 98290 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Alderwood Manor
Arlington
Arlington Heights
Bothell East
Bothell West
Brier
Bunk Foss
Canyon Creek
Cathcart
Cavalero
Chain Lake
Clearview
Darrington
Eastmont
Edmonds
Esperance
Everett
Fobes Hill
Gold Bar
Granite Falls
Hat Island
Kayak Point
Lake Bosworth
Lake Cassidy
Lake Cavanaugh
Lake Goodwin
Lake Roesiger
Lake Stevens
Lake Stickney
Larch Way
Climate data from the nearest NOAA station, Monroe, Wa (7.6 mi from Monroe). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.