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Startup, WA Weather Forecast
Startup, WA Weather Forecast Date: 236 AM PDT Fri Oct 30 2026
The area/counties/county of: Cascades, including the cities of: Gold Bar, Monroe, Duvall, and Index.or toggle through each period.
Today... Mostly cloudy with a chance of rain showers in the morning, then mostly cloudy with rain showers likely in the afternoon. Rainfall amounts less than a tenth of an inch likely. Highs near 50. East wind to 10 mph in the morning becoming light.
Tonight... Mostly cloudy with a slight chance of rain showers in the evening, then mostly clear after midnight. Lows in the mid 30s to lower 40s. Light wind.
Saturday... Mostly sunny. Highs in the lower to mid 50s. Light wind.
Saturday Night... Mostly cloudy. Lows in the mid 30s to lower 40s. Light wind.
Sunday... Mostly sunny. Patchy fog in the morning. Highs in the upper 40s to mid 50s. Light wind.
Sunday Night... Partly cloudy. Lows in the mid to upper 30s.
Monday... Mostly sunny in the morning then becoming mostly cloudy. Patchy fog in the morning. Highs in the mid 50s.
Monday Night... Cloudy. Lows in the lower to mid 40s.
Tuesday... Cloudy in the morning then becoming partly sunny. Patchy fog in the morning. Highs in the mid 50s.
Tuesday Night... Partly cloudy. Lows near 40.
Wednesday... Partly sunny. Highs in the mid to upper 50s.
Wednesday Night... Mostly cloudy. Lows in the lower to mid 40s.
POP = Probability of Precipitation
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