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Flat Tank, AZ Weather Forecast
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Flat Tank Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
 |  | |  |  | | |  | | | | |
| Mostly Sunny | Chance of T-Storm | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear |
| Hi: 110°FHi: 43°C | Lo: 83°FLo: 28°C | Hi: 108°FHi: 42°C | Lo: 82°FLo: 28°C | Hi: 106°FHi: 41°C | Lo: 83°FLo: 28°C | Hi: 110°FHi: 43°C | Lo: 85°FLo: 29°C | Hi: 112°FHi: 44°C | Lo: 85°FLo: 29°C | Hi: 111°FHi: 44°C | Lo: 85°FLo: 29°C |
| POP: 10% |
POP = Probability of Precipitation.
Weather Outlook Updated: 405 AM MST Sat Aug 22 2026 
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Issued: 400 AM MST Sat Aug 22 2026
Key Messages
- High temperatures reach or exceed 110 degrees nearly every day through the next week and will be within a few degrees of daily records, while morning lows remain unusually warm.
- Extreme Heat Warnings are in effect through Friday evening with daily major to extreme HeatRisk.
- Thunderstorms will primarily favor higher terrain areas through early next week, with drier and less favorable conditions next week.
Aviation
...Updated at 1100Z.
South Central Arizona including KPHX, KIWA, KSDL, and...