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Lac A Guillaume, LA Weather Forecast
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Lac A Guillaume Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  | | | | | | | |  |  | |
| Sunny | Partly Cloudy | Sunny | Partly Cloudy | Sunny | Partly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Chance of T-Storm | Mostly Clear | Mostly Clear |
| Hi: 99°FHi: 37°C | Lo: 79°FLo: 26°C | Hi: 100°FHi: 38°C | Lo: 79°FLo: 26°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 | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 306 AM CDT Mon Aug 17 2026 
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Issued: 1241 PM CDT Mon Aug 17 2026
Key Messages
- A Heat Advisory is in effect from 11 AM to 8PM. Highs in the mid 90s to 100F and humidity will result in heat indices in the 105 to 111F range.
- An upper level ridge will remain in place across the northern gulf coast through the middle of next week keeping afternoon highs above normal.
- No appreciable precipitation chances exist through the next seven days.
Discussion
... (Tonight through next Sunday) Issued at 1146 PM CDT Sun Aug 16 2026
Another hot and hum...