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Heisson, WA Weather Forecast
Heisson, WA Weather Forecast Date: 1128 PM PDT Tue Oct 27 2026
The area/counties/county of: South Washington Cascade Foothills, including the cities of: Yacolt, Amboy, Lake Merwin, and Toutle.or toggle through each period.
Overnight... Rain showers with a slight chance of thunderstorms. Lows in the lower 40s. South wind 10 to 15 mph. Gusts up to 35 mph. Chance of rain near 100%. Rainfall amounts a quarter to a half of an inch, except higher amounts possible in thunderstorms.
Wednesday... Rain showers with a slight chance of thunderstorms. Highs in the lower 50s. Southwest wind 5 to 10 mph. Chance of rain near 100%. Rainfall amounts a tenth to a quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night... Patchy fog in the evening. Mostly cloudy with a 50% chance of rain showers. Lows in the mid 30s. Winds light. Rainfall amounts less than a tenth of an inch.
Thursday... Mostly cloudy with a slight chance of rain showers in the morning, then mostly sunny with a chance of rain showers in the afternoon. Highs in the mid 50s. Winds light. Chance of rain 50%.
Thursday Night... Patchy fog in the evening. Rain showers likely. Lows in the upper 30s. Winds light. Chance of rain 60%.
Friday... Mostly cloudy in the morning, then becoming partly sunny. A 50% chance of rain showers. Highs in the lower 50s.
Friday Night... Mostly cloudy in the evening, then becoming partly cloudy. A 40% chance of rain showers. Lows in the mid 30s.
Saturday... Partly sunny. Areas of frost. Highs in the mid 50s.
Saturday Night... Mostly cloudy with a 20% chance of rain. Lows in the mid 30s.
Sunday... Partly sunny with a 20% chance of rain. Highs in the mid 50s.
Sunday Night... Partly cloudy. Lows in the mid 30s.
Monday... Partly sunny. Highs around 60.
Monday Night... Mostly cloudy. Lows in the upper 30s.
POP = Probability of Precipitation
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