Weather World
The Florida Keys Marathon Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 72°F Lo 68°F | Hi 73°F Lo 70°F | Hi 75°F Lo 71°F | Hi 77°F Lo 75°F | Hi 80°F Lo 78°F | Hi 84°F Lo 81°F | Hi 85°F Lo 83°F | Hi 85°F Lo 83°F | Hi 85°F Lo 82°F | Hi 82°F Lo 79°F | Hi 78°F Lo 75°F | Hi 75°F Lo 71°F |
| 14 mph | 13 mph | 14 mph | 14 mph | 12 mph | 10 mph | 10 mph | 10 mph | 10 mph | 14 mph | 14 mph | 14 mph |
| 1.3 in | 1.6 in | 1.1 in | 1.6 in | 3.4 in | 4.8 in | 3.6 in | 4.4 in | 6.9 in | 5.5 in | 2 in | 1.6 in |
| 77% | 78% | 75% | 75% | 75% | 75% | 74% | 74% | 74% | 76% | 76% | 78% |
| 37% | 33% | 32% | 29% | 34% | 39% | 37% | 39% | 42% | 39% | 36% | 37% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 30.0 in | 30.1 in |
| 28 | 26 | 29 | 27 | 25 | 20 | 21 | 20 | 18 | 24 | 27 | 29 |
| 3 | 2 | 2 | 3 | 6 | 10 | 10 | 11 | 12 | 7 | 3 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 |
| 207 | 202 | 224 | 243 | 216 | 168 | 185 | 189 | 182 | 201 | 214 | 209 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 22°C Lo 20°C | Hi 23°C Lo 21°C | Hi 24°C Lo 22°C | Hi 25°C Lo 24°C | Hi 27°C Lo 26°C | Hi 29°C Lo 27°C | Hi 29°C Lo 28°C | Hi 30°C Lo 28°C | Hi 29°C Lo 28°C | Hi 28°C Lo 26°C | Hi 25°C Lo 24°C | Hi 24°C Lo 22°C |
| 22 km/h | 21 km/h | 22 km/h | 22 km/h | 19 km/h | 17 km/h | 16 km/h | 16 km/h | 16 km/h | 22 km/h | 23 km/h | 22 km/h |
| 33 mm | 41 mm | 27 mm | 42 mm | 86 mm | 121 mm | 92 mm | 112 mm | 176 mm | 139 mm | 49 mm | 40 mm |
| 77% | 78% | 75% | 75% | 75% | 75% | 74% | 74% | 74% | 76% | 76% | 78% |
| 37% | 33% | 32% | 29% | 34% | 39% | 37% | 39% | 42% | 39% | 36% | 37% |
| 1019 mb | 1019 mb | 1018 mb | 1016 mb | 1016 mb | 1015 mb | 1017 mb | 1015 mb | 1013 mb | 1014 mb | 1016 mb | 1018 mb |
| 28 | 26 | 29 | 27 | 25 | 20 | 21 | 20 | 18 | 24 | 27 | 29 |
| 3 | 2 | 2 | 3 | 6 | 10 | 10 | 11 | 12 | 7 | 3 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 |
| 207 | 202 | 224 | 243 | 216 | 168 | 185 | 189 | 182 | 201 | 214 | 209 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.