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Johns Lake, TX Weather Forecast
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Johns Lake Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SUNDAY | MONDAY | MONDAY NIGHT | TUESDAY |
 |  |  |  |  | | | | | | |
| Partly Cloudy | Sunny | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Mostly Clear | Mostly Clear | Chance of T-Storm | Mostly Clear | Chance of T-Storm |
| Lo: 75°FLo: 24°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: 71°FLo: 22°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C |
| POP: 50% | POP: 50% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 307 PM CDT Tue Aug 25 2026 
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Issued: 132 PM CDT Tue Aug 25 2026
Key Messages
- A Heat Advisory is in effect for portions of southeast Texas from noon until 7 PM this evening. Max heat indices will top out around 109F. Temperatures will remain above normal through Wednesday before returning nearer to normal through the second half of the week.
- An increase in cloud cover may keep temperatures slightly lower this afternoon compared to the past few days.
- Scattered (30-60%) thunderstorms will develop in the vicinity of the Atchafalaya basin this afternoon. Precipita...