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City of Chehalis, WAChehalis, WA Weather Forecast
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Chehalis Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
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| Partly Cloudy | Mostly Cloudy | Partly Cloudy | Chance of Rain | Rain | Chance of T-Storm | Chance of Rain | Partly Sunny | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Chance of Rain |
| Lo: 45°FLo: 7°C | Hi: 67°FHi: 19°C | Lo: 45°FLo: 7°C | Hi: 63°FHi: 17°C | Lo: 46°FLo: 8°C | Hi: 61°FHi: 16°C | Lo: 43°FLo: 6°C | Hi: 63°FHi: 17°C | Lo: 43°FLo: 6°C | Hi: 63°FHi: 17°C | Lo: 43°FLo: 6°C | Hi: 63°FHi: 17°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 237 PM PDT Tue Sep 22 2026 
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Issued: 227 PM PDT Tue Sep 22 2026
Aviation
... Conditions continue to improve towards VFR this afternoon as cloud cover continues to scatter across western WA. A weak frontal system moving into western WA late tonight into early Wednesday will bring another round of lowering ceilings to the area by Wednesday morning. Most guidance suggests ceilings will range between low-end VFR to MVFR, though cannot rule out some localized IFR conditions developing. Light showers will be possible as this system moves into the area, most likely ...