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City of Marathon, FLMarathon, FL Weather Forecast
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Marathon Weather Forecast
| THIS AFTERNOON | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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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 |
| 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: 81°FLo: 27°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: 81°FLo: 27°C | Hi: 90°FHi: 32°C Lo: 81°FLo: 27°C | Hi: 90°FHi: 32°C | Lo: 81°FLo: 27°C |
| POP: 40% | POP: 30% | POP: 40% | POP: 30% | POP: 30% | POP: 40% | POP: 30% | POP: 30% | POP: 30% | POP: 30% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1015 AM EDT Mon Sep 07 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1039 AM EDT Mon Sep 7 2026
Key Messages
- A moisture surge will support scattered rain and thunderstorm chances into midweek.
- The primary threat for any stronger thunderstorms will be dangerous lightning strikes. When thunder roars, go indoors. If on a boat, stay low, or go below.
- Heat index values will range from 100-105 degrees daily, with little relief in the muggy conditions overnight. Know the signs of heat stress, take frequent breaks, and stay hydrated.
Discussion
... Issued at 1039 AM EDT Mon Sep 7 2026
Scattered shower...