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Kool-Am Phoenix Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  |  |  | |  |  | | | | | |
| Partly Sunny | Clear | Mostly Sunny | Partly Cloudy | Partly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy |
| Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 79°FLo: 26°C | Hi: 97°FHi: 36°C | Lo: 78°FLo: 26°C | Hi: 97°FHi: 36°C | Lo: 77°FLo: 25°C | Hi: 98°FHi: 37°C | Lo: 78°FLo: 26°C | Hi: 101°FHi: 38°C | Lo: 79°FLo: 26°C |
| POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1131 AM MST Mon Sep 21 2026 
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Issued: 1040 AM MST Mon Sep 21 2026
Key Messages
- Dry and tranquil conditions, along with near to slightly above normal temperatures, will continue for most of the region through at least the middle portion of the week.
- Low pressure and associated moisture will reintroduce rain chances for portions of Arizona over the next few days, but any rainfall activity for our forecast area will be focused primarily over foothill and high terrain areas through Wednesday.
- Isolated lower desert rainfall chances get introduced to the forecast dur...