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City of Rainier, WARainier, WA Weather Forecast
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Rainier Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  |  |  |  |  |  |  | | | |
| Patchy Fog | Partly Cloudy | Cloudy | Mostly Cloudy | Chance of T-Storm | Chance of Rain | Chance of Rain | Mostly Clear | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear |
| Hi: 70°FHi: 21°C | Lo: 46°FLo: 8°C | Hi: 66°FHi: 19°C | Lo: 50°FLo: 10°C | Hi: 66°FHi: 19°C | Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 73°FHi: 23°C | Lo: 50°FLo: 10°C | Hi: 77°FHi: 25°C | Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 236 AM PDT Thu Sep 10 2026 
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Issued: 240 AM PDT Thu Sep 10 2026
Aviation
... Generally VFR across western Washington early this morning, with deteriorated MVFR to IFR conditions expected around 12z-14z as a frontal system brings a marine stratus layer inland. Low ceilings may linger into the early afternoon today, expected to erode for most inland terminals by 21z to reveal VFR conditions. Northerly surface winds will generally remain light 10 kt or less through the TAF period. Another marine push will likely bring another round of MVFR low stratus across the...