Annual mean
Annual mean of daily highs
Annual mean of daily lows
Marathon city, Florida
Official LSAD Designation: Marathon city • Census GEOID: 1243000
• Monroe County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Marathon city.
Reference Weather Station: MARATHON AP, FL US (ID: USW00012896)
• Located 1.7 miles from community center
• Elevation: 2.4 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 75.8° | 64.2° | 70.0° | 1.64" |
| February | 78.1° | 66.4° | 72.3° | 1.70" |
| March | 80.7° | 68.5° | 74.6° | 1.33" |
| April | 84.1° | 72.5° | 78.3° | 2.11" |
| May | 87.5° | 75.8° | 81.7° | 3.36" |
| June | 90.3° | 78.5° | 84.4° | 4.23" |
| July | 90.9° | 79.4° | 85.2° | 3.77" |
| August | 91.6° | 79.7° | 85.6° | 5.32" |
| September | 89.9° | 78.4° | 84.2° | 6.37" |
| October | 86.2° | 75.8° | 81.0° | 5.90" |
| November | 81.2° | 70.8° | 76.0° | 1.79" |
| December | 77.9° | 67.5° | 72.7° | 2.20" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station MARATHON AP, FL US (ID: USW00012896) • 1.7 miles from community center .
This is the same reference station used for monthly normals.
Source: NOAA NCEI Global Summary of the Year.
Annual temperature data table (°F)
| Year | Annual mean (°F) | Annual mean of daily highs (°F) | Annual mean of daily lows (°F) |
|---|---|---|---|
| 2010 | 75.9 | 81.4 | 70.4 |
| 2011 | 79.5 | 85.0 | 74.0 |
| 2012 | 79.1 | 84.4 | 73.7 |
| 2013 | 80.1 | 85.4 | 74.8 |
| 2014 | 78.9 | 84.5 | 73.3 |
| 2015 | 80.5 | 85.9 | 75.2 |
| 2016 | 79.4 | 84.6 | 74.2 |
| 2017 | 80.4 | 85.7 | 75.0 |
| 2018 | 79.6 | 85.2 | 74.0 |
| 2019 | 81.7 | 87.2 | 76.2 |
| 2020 | 80.0 | 85.4 | 74.7 |
| 2021 | 78.9 | 84.3 | 73.5 |
| 2022 | 80.4 | 86.2 | 74.7 |
| 2023 | 81.4 | 87.3 | 75.5 |
| 2024 | 79.6 | 84.2 | 75.1 |
| 2025 | 78.9 | 83.3 | 74.5 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.