Lake Armstrong, WA Weather Forecast
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Lake Armstrong Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
| Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Showers Likely | Chance of Showers | Partly Cloudy | Partly Sunny | Mostly Cloudy | Mostly Cloudy | Chance of Rain | Chance of Rain |
| Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 66°FHi: 19°C | Lo: 53°FLo: 12°C | Hi: 66°FHi: 19°C | Lo: 50°FLo: 10°C | Hi: 66°FHi: 19°C | Lo: 50°FLo: 10°C | Hi: 66°FHi: 19°C | Lo: 51°FLo: 11°C | Hi: 66°FHi: 19°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 236 PM PDT Wed Aug 26 2026 

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Issued: 800 PM PDT Wed Aug 26 2026
Aviation
... VFR conditions continue across most of western Washington this evening with a weak front just offshore of the coast. As this front moves across the area tonight, that will bring in periods of MVFR to IFR cigs across the area overnight into early Thursday morning. The area most likely to see more steady low ceilings are KHQM and KCLM, with the clouds being more transitory as a mid-level cloud deck develops behind the front that will bring low-end VFR conditions through much of the day...
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