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Marathon, FL weather and climate

Monroe County, FL · population 9,831 · about 10 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Marathon's own coordinates.

The year at a glance

Sunny days
244
clear or partly cloudy, per year
Precipitation
32 in
per year
Wet days
113
rain or snow per year
Snowfall
0 in
per year
Hot days
92
above 90 °F
Freezing nights
0
at or below 32 °F
Humidity
77%
average relative
Average temperature
79 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
708090JanMarMayJulSepNovDaily high, Jan: 76 °FDaily high, Feb: 78 °FDaily high, Mar: 80 °FDaily high, Apr: 84 °FDaily high, May: 87 °FDaily high, Jun: 90 °FDaily high, Jul: 91 °FDaily high, Aug: 91 °FDaily high, Sep: 90 °FDaily high, Oct: 86 °FDaily high, Nov: 81 °FDaily high, Dec: 78 °FDaily low, Jan: 64 °FDaily low, Feb: 66 °FDaily low, Mar: 68 °FDaily low, Apr: 72 °FDaily low, May: 75 °FDaily low, Jun: 78 °FDaily low, Jul: 79 °FDaily low, Aug: 80 °FDaily low, Sep: 78 °FDaily low, Oct: 76 °FDaily low, Nov: 71 °FDaily low, Dec: 67 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high767880848790919190868178
Daily low646668727578798078767167

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovMarathon, Jan: 1.4 inMarathon, Feb: 1.2 inMarathon, Mar: 1.2 inMarathon, Apr: 1.5 inMarathon, May: 2.7 inMarathon, Jun: 4.4 inMarathon, Jul: 2.9 inMarathon, Aug: 4.3 inMarathon, Sep: 5.3 inMarathon, Oct: 4.4 inMarathon, Nov: 1.5 inMarathon, Dec: 1.2 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Marathon1.41.21.21.52.74.42.94.35.34.41.51.2

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovMarathon, Jan: 22 daysMarathon, Feb: 23 daysMarathon, Mar: 26 daysMarathon, Apr: 24 daysMarathon, May: 24 daysMarathon, Jun: 15 daysMarathon, Jul: 16 daysMarathon, Aug: 16 daysMarathon, Sep: 14 daysMarathon, Oct: 19 daysMarathon, Nov: 23 daysMarathon, Dec: 23 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Marathon222326242415161614192323

Compare Marathon with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Florida city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).