Key West, FL Weather Forecast
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Key West Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
| 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: 83°FLo: 28°C | Hi: 90°FHi: 32°C | Lo: 83°FLo: 28°C | Hi: 90°FHi: 32°C | Lo: 81°FLo: 27°C | Hi: 90°FHi: 32°C | Lo: 81°FLo: 27°C | Hi: 90°FHi: 32°C Lo: 83°FLo: 28°C | Hi: 90°FHi: 32°C Lo: 83°FLo: 28°C | Lo: 83°FLo: 28°C | Hi: 90°FHi: 32°C | Lo: 81°FLo: 27°C |
| POP: 10% | POP: 10% | POP: 20% | POP: 30% | POP: 50% | POP: 50% | POP: 50% | POP: 30% | POP: 30% | POP: 40% | POP: 50% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 356 PM EDT Sun Aug 23 2026 

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Key West Forecast Discussion
Issued: 155 PM EDT Sun Aug 23 2026
Key Messages
- Conditions remain somewhat favorable for an island cloud line and associated waterspouts through this evening.
- Rain and thunder chances will gradually return to near normal by the early to middle part of the week.
- Highs near 90 and dewpoints in the mid to upper 70s suggest afternoon heat indices will peak at 105 to 108 degrees.
Discussion
... Issued at 436 AM EDT Sun Aug 23 2026 Mostly dry air will continue to be the main story for the next couple of days across the Keys. However, just...
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