Weather WorldHalfmoon Lake, UT Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Halfmoon Lake Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | WEDNESDAY |
 |  |  | |  |  | |  |  |  |  |  |
| Sunny | Mostly Clear | Thunderstorms | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Showers Likely | Chance of Showers | Partly Cloudy | Partly Cloudy | Chance of Showers |
| Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Hi: 61°FHi: 16°C Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C |
| POP: 30% | POP: 10% | POP: 30% | POP: 70% | POP: 60% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1244 AM MDT Thu Sep 03 2026 
Halfmoon Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Halfmoon Lake Weather Map
Halfmoon Lake Quick Facts
Halfmoon Lake Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1102 PM MDT Wed Sep 2 2026
Key Messages
.KEY MESSAGES, Issued 1001 PM MDT Wed Sep 2 2026...- Gusty southwest winds are expected each afternoon and evening across Utah and southwest Wyoming through the end of the work week. With minimum relative humidities approaching critical values in pockets of western Utah, this will result in some locally critical fire weather conditions.
- An influx of tropical moisture over the holiday weekend will increase the risk of flash flooding into early next week, particularly on Sunday across c...