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City of Marathon, FLMarathon, FL Weather Forecast
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Marathon Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
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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 Showers | Chance of Showers | Mostly Clear | Chance of Showers |
| Hi: 85°FHi: 29°C | Lo: 79°FLo: 26°C | Hi: 85°FHi: 29°C | Lo: 79°FLo: 26°C | Hi: 85°FHi: 29°C | Lo: 75°FLo: 24°C | Hi: 81°FHi: 27°C | Lo: 75°FLo: 24°C | Hi: 81°FHi: 27°C Lo: 75°FLo: 24°C | Hi: 81°FHi: 27°C Lo: 75°FLo: 24°C | Lo: 75°FLo: 24°C | Hi: 81°FHi: 27°C |
| POP: 20% | POP: 20% | POP: 30% | POP: 40% | POP: 60% | POP: 70% | POP: 40% | POP: 20% | POP: 10% | POP: 10% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 406 AM EDT Fri Oct 30 2026 
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Issued: 502 AM EDT Fri Oct 30 2026
Key Messages
- Major coastal flooding is expected again overnight, and a Coastal Flood Warning is in effect for all of the Florida Keys. Coastal flooding will gradually decrease over the weekend, but receding rates may be slow, especially in the Upper Keys.
- Gentle to occasionally moderate northeasterly breezes may see an uptick by Saturday evening, but an extended period of windy conditions similar to last weekend is very unlikely.
Aviation
... (06Z TAFS) Issued at 500 AM EDT Fri Oct 30 2026 VFR cond...