Cost, TX Weather Forecast
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| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Chance of T-Storm | Partly Cloudy | Mostly Sunny | Partly Cloudy | Chance of T-Storm | Partly Cloudy | Partly Cloudy | Mostly Clear | Clearing | Mostly Clear | Chance of T-Storm | Partly Cloudy |
| Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 100°FHi: 38°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 401 AM CDT Fri Sep 11 2026 

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Issued: 542 AM CDT Fri Sep 11 2026
Key Messages
Updated at 537 AM CDT Fri Sep 11 2026- Low rain chances today over the coastal plains, Hill Country, southern Edwards Plateau and portions of the I-35 corridor.
- Temperatures remain above normal through the forecast period, with continued concerns for maximum temperatures and peak heat index values near Heat Advisory levels this weekend.
- Most areas remain dry into next week, except for some low rain chances over the coastal plains.
Aviation
... (12Z TAFS) Issued at 537 AM CDT Fri Sep 11 ...
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