Weather WorldSquare Lake, ID Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Square Lake Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  |  |  | | |  | | | |  |
| Patchy Fog | Mostly Cloudy | Clearing | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Chance of Rain | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy |
| Lo: 34°FLo: 1°C | Hi: 63°FHi: 17°C | Lo: 36°FLo: 2°C | Hi: 62°FHi: 17°C | Lo: 38°FLo: 3°C | Hi: 66°FHi: 19°C | Lo: 43°FLo: 6°C | Hi: 64°FHi: 18°C | Lo: 42°FLo: 6°C | Hi: 67°FHi: 19°C | Lo: 43°FLo: 6°C | Hi: 64°FHi: 18°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1123 AM PDT Sat Sep 26 2026 
Square Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Square Lake Weather Map
Square Lake Quick Facts
Square Lake Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1215 PM MDT Sat Sep 26 2026
Discussion
...
KEY MESSAGES:- Mild conditions the rest of the week with only minor disturbances.
- Shortwave Monday to bring breezy conditions.
- Potential for a cold front Friday into the weekend, but confidence is low.
- Chances are increasing for a warm, dry early October beyond the 7 day forecast.
Overall mild conditions are expected the rest of the week. The weather patterns we expect throughout the week are: weak zonal (west-to-east) flow aloft, a shortwave on Monday in split flow, and some weak rid...