Weather WorldLake Sacajawea, WA Weather Forecast
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Lake Sacajawea Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  | | | |  | | |  |  |  | |
| Patchy Fog | Clearing | Patchy Fog | Clearing | Patchy Fog | Mostly Cloudy | Patchy Fog | Patchy Fog | Partly Cloudy | Chance of Rain | Chance of Rain | Chance of Rain |
| Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C |
| POP: 20% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 501 PM PDT Sun Aug 16 2026 
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Lake Sacajawea Forecast Discussion
Issued: 420 PM PDT Sun Aug 16 2026
Discussion
...Now through Saturday...Seasonably dry and warm conditions continue through the week with minimal weather impacts. The large-scale pattern remains fairly stagnant through the period, with broad and relatively flat upper-level ridging over the majority of CONUS and a weak, positively-tilted upper- level troughing over the northeast Pacific. This pattern will support continued onshore flow, maintaining near-normal daily high temperatures in the 80s within ...