Montesano, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Montesano, a city in Grays Harbor County, Washington.
Overnight
53°F
Clear
Clear, with a low around 53. East northeast wind around 3 mph.
7-day forecast for Montesano
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Clear | 3 mph ENE | 0% |
| Tuesday | 91°F | Sunny then Patchy Smoke | 5 mph NE | 0% |
| Tuesday Night | 57°F | Areas Of Smoke | 0 to 5 mph NNE | 0% |
| Wednesday | 92°F | Areas Of Smoke | 2 to 7 mph N | 0% |
| Wednesday Night | 56°F | Mostly Clear | 1 to 7 mph WSW | 0% |
| Thursday | 87°F | Sunny | 1 to 8 mph WSW | 0% |
| Thursday Night | 55°F | Partly Cloudy | 8 mph WSW | 0% |
| Friday | 82°F | Mostly Sunny | 5 to 9 mph W | 0% |
| Friday Night | 54°F | Mostly Clear | 3 to 9 mph W | 0% |
| Saturday | 77°F | Sunny | 3 to 10 mph W | 0% |
| Saturday Night | 54°F | Partly Cloudy | 6 to 12 mph W | 0% |
| Sunday | 73°F | Mostly Sunny | 5 to 9 mph W | 0% |
| Sunday Night | 53°F | Partly Cloudy | 3 to 9 mph W | 0% |
| Monday | 74°F | Mostly Sunny | 2 to 9 mph W | 0% |
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 Aug 4, 2026.