Weather WorldThornton Lake, WA Weather Forecast
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Thornton Lake Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 | | | |  |  | | | |  | | |
| Smoke | Smoke | Smoke | Smoke | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear |
| Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 50°FLo: 10°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 236 AM PDT Wed Aug 05 2026 
Thornton Lake Radar Loop
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