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Highway Tank Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  | | | | | | | | | |
| 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 | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Lo: 74°FLo: 23°C | Hi: 97°FHi: 36°C | Lo: 73°FLo: 23°C | Hi: 96°FHi: 36°C | Lo: 72°FLo: 22°C | Hi: 96°FHi: 36°C | Lo: 69°FLo: 21°C | Hi: 96°FHi: 36°C | Lo: 69°FLo: 21°C | Hi: 95°FHi: 35°C | Lo: 69°FLo: 21°C | Hi: 95°FHi: 35°C |
| POP: 30% | POP: 10% | POP: 30% | POP: 20% | POP: 10% | POP: 20% | POP: 20% | POP: 20% | POP: 10% | POP: 10% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 PM MST Tue Aug 18 2026 
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Issued: 447 PM MST Tue Aug 18 2026
Key Messages
.- Temperatures will remain several degrees above daily normals through this weekend with lower desert highs ranging between 107-113 degrees and overnight lows in the mid 80s to low 90s.
- Extreme Heat Warnings are in effect through Friday evening due to widespread major HeatRisk.
- Thunderstorm activity is expected to increase in coverage through mid-week with chances returning to the south-central Arizona lower deserts as early as Wednesday.
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