Marathon, FL
Climate overview — based on NOAA 1991-2020 normals from MARATHON AP, FL US.
Year-round temperatures (°F)
Climate summary
Marathon has an annual average temperature of 78.8°F with about 39.7 inches of precipitation per year. The warmest month is August (average high 91.6°F), and the coldest is January (average low 64.2°F). September is typically the wettest month (6.37 in) and March the driest (1.33 in).
Best time to visit Marathon
Full guide →Climate change signal
All-time records →215 of 366 (58.7%) of Marathon's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1990s | 12 | |
| 2000s | 106 | |
| 2010s | 150 | |
| 2020s | 98 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 75.8°F | 64.2°F | 70.0°F | 1.64 in | — | 8 |
| February | 78.1°F | 66.4°F | 72.3°F | 1.70 in | — | 6 |
| March | 80.7°F | 68.5°F | 74.6°F | 1.33 in | — | 6 |
| April | 84.1°F | 72.5°F | 78.3°F | 2.11 in | — | 5 |
| May | 87.5°F | 75.8°F | 81.7°F | 3.36 in | — | 8 |
| June | 90.3°F | 78.5°F | 84.4°F | 4.23 in | — | 10 |
| July | 90.9°F | 79.4°F | 85.2°F | 3.77 in | — | 13 |
| August | 91.6°F | 79.7°F | 85.6°F | 5.32 in | — | 14 |
| September | 89.9°F | 78.4°F | 84.2°F | 6.37 in | — | 15 |
| October | 86.2°F | 75.8°F | 81.0°F | 5.90 in | — | 12 |
| November | 81.2°F | 70.8°F | 76.0°F | 1.79 in | — | 7 |
| December | 77.9°F | 67.5°F | 72.7°F | 2.20 in | — | 8 |
Climate twins of Marathon
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).