Weather WorldCosmopolis, WA 7-Day Weather Forecast
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Cosmopolis Weather Forecast
Cosmopolis, WA Weather Forecast Date: 236 AM PDT Sat Sep 05 2026
Weather forecast for Cosmopolis, WA
Today Hi: 70°FHi: 21°C Lo: 50°F Lo: 10°C |
Today... Mostly cloudy. A slight chance of thunderstorms late in the afternoon. Highs in the upper 60s to mid 70s. Light wind becoming east to 10 mph in the afternoon. |
Sun Hi: 70°FHi: 21°C Lo: 53°F Lo: 12°C |
Sunday... Mostly sunny. Highs in the upper 60s to mid 70s. Light wind becoming west to 10 mph in the afternoon. |
Labor Day Hi: 65°FHi: 18°C Lo: 53°F Lo: 12°C |
Labor Day... Mostly cloudy. Highs in the 60s. Light wind becoming west around 10 mph in the afternoon. |
| Tue Hi: 73°FHi: 23°C Lo: 53°F Lo: 12°C |
Tuesday... Mostly cloudy in the morning then becoming mostly sunny. Highs in the lower to mid 70s. |
| Wed Hi: 76°FHi: 24°C Lo: 57°F Lo: 14°C |
Wednesday... Mostly sunny. Highs in the mid 70s to lower 80s. |
| Thu Hi: 73°FHi: 23°C Lo: 55°F Lo: 13°C |
Thursday... Partly sunny. Highs in the lower to mid 70s. |
Fri Hi: 67°FHi: 19°C |
Friday... Mostly cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Highs in the mid to upper 60s. |
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