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Alton Lake, FL Weather Forecast
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Alton Lake Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
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| 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 | Chance of T-Storm |
| Lo: 79°FLo: 26°C | Hi: 95°FHi: 35°C | Lo: 79°FLo: 26°C | Hi: 95°FHi: 35°C | Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C | Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C |
| POP: 40% | POP: 50% | POP: 20% | POP: 40% | POP: 40% | POP: 20% | POP: 30% | POP: 40% | POP: 40% | POP: 60% | POP: 60% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 224 PM EDT Mon Aug 17 2026 
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Alton Lake Forecast Discussion
Issued: 703 PM EDT Mon Aug 17 2026
Key Messages
Issued at 658 PM EDT Mon Aug 17 2026
- Long-duration hazardous heat wave continues for much of this week. Heat products will keep being issued accordingly. Very warm nighttime temperatures offer little relief. Please exercise heat safety: www.weather.gov/safety/heat.
- Daily chances for thunderstorms remain in the forecast. Strong- gusty winds, frequent lightning and locally heavy rain are the main threats.
- Somewhat of a break in the heat wave appears to occ...