Montesano, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Montesano, a city in Grays Harbor County, Washington.
Today
59°F
Partly Sunny
Partly sunny. High near 59, with temperatures falling to around 53 in the afternoon. East northeast wind 0 to 5 mph.
7-day forecast for Montesano
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Partly Sunny | 0 to 5 mph ENE | 4% |
| Tonight | 37°F | Mostly Clear | 2 mph E | 4% |
| Wednesday | 57°F | Mostly Cloudy then Light Rain | 3 mph SSE | 88% |
| Wednesday Night | 45°F | Light Rain | 2 to 6 mph SSW | 99% |
| Thursday | 57°F | Slight Chance Light Rain | 5 mph SSW | 18% |
| Thursday Night | 47°F | Light Rain | 1 to 6 mph S | 88% |
| Friday | 57°F | Light Rain | 2 to 7 mph S | 88% |
| Friday Night | 47°F | Chance Light Rain | 1 to 5 mph SE | 46% |
| Saturday | 61°F | Light Rain Likely | 6 mph SSE | 55% |
| Saturday Night | 49°F | Rain | 5 to 15 mph SSW | 89% |
| Sunday | 57°F | Light Rain Likely | 2 to 10 mph SW | 67% |
| Sunday Night | 43°F | Chance Light Rain | 3 mph SE | 33% |
| Monday | 56°F | Light Rain Likely | 5 mph ESE | 59% |
| Monday Night | 47°F | Light Rain | 3 to 9 mph SSE | 78% |
Forecast source: National Weather Service (api.weather.gov) for Montesano (47.015, -123.586). Updated through the day.
Growing snapshot for Montesano
Last spring frost
May 1
First fall frost
Oct 14
Growing season
169 days
Hardiness zone
8b
More local growing data for Montesano: nearby ZIP 98583 weather · frost dates · planting calendar · Washington frost dates
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Climate data from the nearest NOAA station, Elma, Wa (4.1 mi from Montesano). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.