Marathon, Florida 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Overcast 84°F 29°C Heat Index: 91°F	Observed at: Marathon, FL	Elevation: 12 ft | 4 m
	Last Updated: July 27, 9:45 PM Timezone: GMT -5/-4
	Sky Conditions: Overcast	Temperature: 84°F | 29°C
	Pressure: 29.91 in | 1012.9 mb	Dewpoint: 74°F | 23°C
	Humidity: 73%	Wind: WSW 8 mph | WSW 13 kph
	Feels Like: 91°F | 33°C	Visibility: 46.1 mi | 74.1 km
	Lat/Long: 24.7136 | -81.0937	Sunrise: 6:50 AM   Sunset: 8:11 PM

7 Day Graphical Forecast

Valid: 1:56 PM 7/28/2026

Tonight Drizzle 80 °F 42% Chance Precipitation Tuesday Light Drizzle 91 |82 °F 31% Chance Precipitation Wednesday Overcast 89 |83 °F 8% Chance Precipitation Thursday Overcast 86 |84 °F 4% Chance Precipitation Friday Overcast 86 |85 °F 2% Chance Precipitation Saturday Overcast 86 |85 °F 5% Chance Precipitation Sunday Drizzle 86 |84 °F 15% Chance Precipitation

7 Hour Graphical Forecast

Valid: 1:56 PM 7/28/2026

1 PM Partly Cloudy 91 °F 19% Chance Precipitation

2 PM Overcast 89 °F 17% Chance Precipitation

3 PM Overcast 89 °F 8% Chance Precipitation

4 PM Overcast 89 °F 3% Chance Precipitation

5 PM Overcast 87 °F 3% Chance Precipitation

6 PM Overcast 88 °F 3% Chance Precipitation

7 PM Overcast 87 °F 3% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Marathon, FL - (Fahrenheit & Celsius) Valid: 1:56 PM 7/28/2026 Tonight Drizzle with a low around 80°F [27°C]. W wind to around 11 mph [17 kph], with gusts to near 14 mph [23 kph]. Chance of precipitation 42% with QPF of 0.04 in [1.1 mm]. Tuesday Light Drizzle with a high near 91°F [33°C]. WSW wind to around 18 mph [28 kph], with gusts to near 24 mph [38 kph]. Dewpoint near 74°F [23°C] with humidity of 85%. Pressure around 29.91 in [1012.9 mb]. UV Index: 8.75. Chance of precipitation 31% with QPF of 0.02 in [0.4 mm]. Tuesday Night Light Drizzle with a low around 82°F [28°C]. WSW wind to around 18 mph [28 kph], with gusts to near 24 mph [38 kph]. Chance of precipitation 31% with QPF of 0.02 in [0.4 mm]. Wednesday Overcast with a high near 89°F [32°C]. WSW wind to around 15 mph [24 kph], with gusts to near 18 mph [28 kph]. Dewpoint near 74°F [23°C] with humidity of 74%. Pressure around 29.91 in [1012.9 mb]. UV Index: 8.95. Chance of precipitation 8% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 83°F [28°C]. WSW wind to around 15 mph [24 kph], with gusts to near 18 mph [28 kph]. Chance of precipitation 8% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 86°F [30°C]. WSW wind to around 6 mph [9 kph], with gusts to near 7 mph [11 kph]. Dewpoint near 74°F [23°C] with humidity of 68%. Pressure around 29.91 in [1012.9 mb]. UV Index: 8.75. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 84°F [29°C]. WSW wind to around 6 mph [9 kph], with gusts to near 7 mph [11 kph]. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 86°F [30°C]. S wind to around 6 mph [10 kph], with gusts to near 7 mph [10 kph]. Dewpoint near 74°F [23°C] with humidity of 69%. Pressure around 29.91 in [1012.9 mb]. UV Index: 8.95. Chance of precipitation 2% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 85°F [29°C]. S wind to around 6 mph [10 kph], with gusts to near 7 mph [10 kph]. Chance of precipitation 2% with QPF of 0.00 in [0.0 mm]. Saturday Overcast with a high near 86°F [30°C]. SE wind to around 5 mph [9 kph], with gusts to near 5 mph [8 kph]. Dewpoint near 74°F [23°C] with humidity of 71%. Pressure around 29.91 in [1012.9 mb]. UV Index: 8.55. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm]. Saturday Night Overcast with a low around 85°F [29°C]. SE wind to around 5 mph [9 kph], with gusts to near 5 mph [8 kph]. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm]. Sunday Drizzle with a high near 86°F [30°C]. SE wind to around 14 mph [23 kph], with gusts to near 13 mph [21 kph]. Dewpoint near 74°F [23°C] with humidity of 75%. Pressure around 29.91 in [1012.9 mb]. UV Index: 7.15. Chance of precipitation 15% with QPF of 0.06 in [1.5 mm]. Sunday Night Drizzle with a low around 84°F [29°C]. SE wind to around 14 mph [23 kph], with gusts to near 13 mph [21 kph]. Chance of precipitation 15% with QPF of 0.06 in [1.5 mm].

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7 Day and Night - QPF Forecast for Marathon, FL

Tonight: 1.1 mm | 0.04 in

Tuesday: 0.4 mm | 0.02 in

Tuesday Night: 0.4 mm | 0.02 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.0 mm | 0.00 in

Saturday Night: 0.0 mm | 0.00 in

Sunday: 1.5 mm | 0.06 in

Sunday Night: 1.5 mm | 0.06 in

7 Day and Night - Maximum Wind Speed Forecast for Marathon, FL

Tonight: W @ 17 kph | 11 mph

Tuesday: WSW @ 28 kph | 18 mph

Tuesday Night: WSW @ 28 kph | 18 mph

Wednesday: WSW @ 24 kph | 15 mph

Wednesday Night: WSW @ 24 kph | 15 mph

Thursday: WSW @ 9 kph | 6 mph

Thursday Night: WSW @ 9 kph | 6 mph

Friday: S @ 10 kph | 6 mph

Friday Night: S @ 10 kph | 6 mph

Saturday: SE @ 9 kph | 5 mph

Saturday Night: SE @ 9 kph | 5 mph

Sunday: SE @ 23 kph | 14 mph

Sunday Night: SE @ 23 kph | 14 mph

7 Day and Night - Maximum Humidity Forecast for Marathon, FL

Tonight: 88 %

Tuesday: 85 %

Tuesday Night: 85 %

Wednesday: 74 %

Wednesday Night: 74 %

Thursday: 68 %

Thursday Night: 68 %

Friday: 69 %

Friday Night: 69 %

Saturday: 71 %

Saturday Night: 71 %

Sunday: 75 %

Sunday Night: 75 %

7 Day and Night - Snowfall Totals Forecast for Marathon, FL

Tonight: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

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