Ocosta, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Ocosta, a community in Grays Harbor County, Washington.

Tonight

54°F

Mostly Cloudy

Mostly cloudy, with a low around 54. West southwest wind around 2 mph.

7-day forecast for Ocosta

When	Temp	Forecast	Wind	Precip
Tonight	54°F	Mostly Cloudy	2 mph WSW	0%
Saturday	64°F	Mostly Cloudy	1 to 8 mph NW	1%
Saturday Night	53°F	Mostly Cloudy	8 mph NNW	0%
Sunday	65°F	Mostly Sunny	6 to 13 mph NNW	0%
Sunday Night	55°F	Partly Cloudy	7 to 13 mph NW	0%
Monday	65°F	Partly Sunny	6 to 13 mph NW	0%
Monday Night	53°F	Partly Cloudy	7 to 13 mph NW	0%
Tuesday	64°F	Partly Sunny	6 to 12 mph NW	1%
Tuesday Night	52°F	Mostly Cloudy	2 to 12 mph NNW	5%
Wednesday	64°F	Partly Sunny	2 to 9 mph N	5%
Wednesday Night	53°F	Mostly Cloudy	5 to 9 mph N	14%
Thursday	66°F	Partly Sunny then Slight Chance Light Rain	6 to 9 mph NNE	22%
Thursday Night	54°F	Chance Light Rain	9 mph WNW	29%
Friday	63°F	Chance Light Rain	7 to 10 mph WSW	27%

Forecast source: National Weather Service (api.weather.gov) for Ocosta (46.886, -124.033). Updated through the day.

Growing snapshot for Ocosta

Last spring frost

Mar 29

First fall frost

Nov 7

Growing season

224 days

Hardiness zone

More local growing data for Ocosta: nearby ZIP 98595 weather · frost dates · planting calendar · Washington frost dates

Nearby towns & communities

Aberdeen Aberdeen Gardens Amanda Park Brady Central Park Cohassett Beach Copalis Beach Cosmopolis Elma Grayland Hogans Corner Hoquiam Humptulips Malone Markham McCleary Moclips Montesano Neilton Oakville Ocean City Ocean Shores Oyehut Pacific Beach Porter Qui-nai-elt Village Santiago Satsop Taholah Westport

All Washington locations ›

Climate data from the nearest NOAA station, Grayland, Wa (6.7 mi from Ocosta). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.