Marine Weather Net

Marathon, FL Weather Forecast




Marathon, Florida

 Lat: 24.71N, Lon: 81.08W

Current Conditions Updated: 1253 PM EDT MON SEP 21 2026

Thunder
Temp: 84°F
  • Humidity:
  • 76%
  • Winds:
  • 6 MPH WSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.92 in.
  • Dewpoint:
  • 76°F
  • Heat index:
  • 93°F

  • Sunrise:
  • 7:10 AM EDT
  • Sunset:
  • 7:21 PM EDT
  • Moonrise:
  • 4:23 PM EDT
  • Moonset:
  • 2:23 AM EDT

REST OF TODAY

PARTLY SUNNY
Hi: 89°F
Lo: 80°F
Precip: 50%

TUESDAY

CHANCE OF T-STORM
Hi: 89°F
Lo: 80°F
Precip: 70%

WEDNESDAY

CHANCE OF T-STORM
Hi: 89°F
Lo: 79°F
Precip: 80%

THURSDAY

CHANCE OF T-STORM
Hi: 89°F
Lo: 80°F
Precip: 60%
Weather Forecast In Detail:
Forecast Issued: 1005 AM EDT Mon Sep 21 2026

Rest Of Today...Partly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the upper 80s. South to southwest winds 5 to 10 mph. Chance of rain 50 percent.
Tonight...Showers likely with a chance of thunderstorms. Lows near 80. South winds 10 to 15 mph. Chance of rain 60 percent.
Tuesday...Showers likely with a chance of thunderstorms. Highs in the upper 80s. South winds 5 to 10 mph. Chance of rain 70 percent.
Tuesday Night...Showers likely with a chance of thunderstorms. Lows near 80. South winds 10 to 15 mph. Chance of rain 70 percent.
Wednesday...Showers with a chance of thunderstorms. Highs in the upper 80s. South winds 5 to 10 mph. Chance of rain 80 percent.
Wednesday Night...Showers likely with a chance of thunderstorms. Lows in the upper 70s. Chance of rain 70 percent.
Thursday...Showers likely with a chance of thunderstorms. Highs in the upper 80s. Chance of rain 60 percent.
Thursday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows near 80. Highs in the upper 80s. Chance of rain 50 percent.
Friday...Mostly cloudy with a chance of showers and thunderstorms. Lows near 80. Highs in the upper 80s. Chance of rain 50 percent.
Saturday...Showers likely with a chance of thunderstorms. Highs in the upper 80s. Chance of rain 60 percent.
Saturday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 50 percent.
Sunday...Showers likely with a chance of thunderstorms. Highs in the upper 80s. Chance of rain 60 percent.
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