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City of Chehalis, WAChehalis, WA Weather Forecast
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Chehalis Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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| Sunny | Partly Cloudy | Partly Sunny | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Chance of Rain | Partly Cloudy |
| Hi: 63°FHi: 17°C | Lo: 36°FLo: 2°C | Hi: 63°FHi: 17°C | Lo: 45°FLo: 7°C | Hi: 67°FHi: 19°C | Lo: 47°FLo: 8°C | Hi: 73°FHi: 23°C | Lo: 47°FLo: 8°C | Hi: 73°FHi: 23°C | Lo: 49°FLo: 9°C | Hi: 63°FHi: 17°C | Lo: 41°FLo: 5°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 236 AM PDT Mon Oct 12 2026 
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Issued: 311 AM PDT Mon Oct 12 2026
Aviation
... Northerly flow aloft continues over Western Washington today with an upper ridge offshore and an upper low gradually shifting eastward into the Great Basin. Apart from some patchy LIFR fog in the some of the river valleys this morning, VFR conditions will prevail across the region today.
KSEA...VFR. Surface winds light and variable becoming W/NW under 7 knots this afternoon.
27
Watches / Warnings / Advisories
/WARNINGS/ADVISORIES... WA...Frost Advisory until 8 AM PDT this morning for Eas...