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Mount Lemmon, AZ Weather Forecast
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Mount Lemmon Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Lo: 62°FLo: 17°C | Hi: 76°FHi: 24°C | Lo: 64°FLo: 18°C | Hi: 78°FHi: 26°C | Lo: 66°FLo: 19°C | Hi: 80°FHi: 27°C | Lo: 67°FLo: 19°C | Hi: 81°FHi: 27°C | Lo: 68°FLo: 20°C | Hi: 83°FHi: 28°C Lo: 68°FLo: 20°C | Hi: 83°FHi: 28°C Lo: 68°FLo: 20°C | Hi: 81°FHi: 27°C |
| POP: 50% | POP: 40% | POP: 10% | POP: 10% | POP: 10% | POP: 10% | POP: 10% | POP: 10% | POP: 30% | POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 213 PM MST Thu Sep 03 2026 
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Issued: 1208 PM MST Thu Sep 3 2026
Discussion
... Southwest flow has set up across the region, pulling in tropical moisture from Hurricane Marie. PWATS over Southeast Arizona are at the 90th percentile or higher for this early September. The above normal moisture will prime the day for heavy rainfall risk. The latest CAM model have confidence for this afternoon storms to produce up to 1-1.5 inches with pockets up to 2 inches in a short amount of time. Ground conditions are primed and can react quickly to heavy rainfall because of ...