Montesano, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Montesano, a city in Grays Harbor County, Washington.
Overnight
37°F
Partly Cloudy
Partly cloudy, with a low around 37. East wind around 2 mph.
7-day forecast for Montesano
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 37°F | Partly Cloudy | 2 mph E | 1% |
| Wednesday | 57°F | Mostly Cloudy then Light Rain | 5 mph SE | 95% |
| Wednesday Night | 45°F | Light Rain | 6 to 10 mph SW | 92% |
| Thursday | 58°F | Partly Sunny | 6 mph SSW | 13% |
| Thursday Night | 45°F | Light Rain | 3 to 8 mph SE | 92% |
| Friday | 56°F | Light Rain | 3 to 12 mph SSE | 92% |
| Friday Night | 48°F | Light Rain | 2 to 6 mph SE | 76% |
| Saturday | 62°F | Light Rain Likely | 6 mph SE | 74% |
| Saturday Night | 49°F | Light Rain | 3 to 15 mph SSW | 89% |
| Sunday | 57°F | Light Rain Likely | 1 to 9 mph SW | 67% |
| Sunday Night | 42°F | Slight Chance Light Rain | 0 to 3 mph ENE | 15% |
| Monday | 56°F | Chance Light Rain | 5 mph E | 49% |
| Monday Night | 46°F | Light Rain Likely | 3 to 7 mph SE | 67% |
| Tuesday | 57°F | Light Rain Likely | 3 to 8 mph SSE | 67% |
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 4, 2026.