5-day weather forecast for Big Pine Key, Florida
Today
81°
91°
Chance Thunderstorms
Friday
82°
92°
Chance Thunderstorms
Saturday
82°
92°
Chance Thunderstorms
Sunday
82°
92°
Chance Thunderstorms
Monday
82°
92°
Chance Thunderstorms
Click on a forecast to see the forecast trend for that day
Weather forecast accuracy for Marathon, Florida
| CustomWeather | 68.01% |
| NWS Digital Forecast | 67.75% |
| National Weather Service | 64.50% |
| The Weather Channel | 64.24% |
| Intellicast | 63.97% |
| AccuWeather | 59.45% |
| CustomWeather | 79.42% |
| AccuWeather | 76.20% |
| The Weather Channel | 74.88% |
| Intellicast | 74.81% |
| NWS Digital Forecast | 72.43% |
| National Weather Service | 67.54% |
ForecastAdvisor Fact
On average, National Weather Service's high temperature forecasts for Marathon were off by 2.51 degrees last month.