WeatherWX.com
Key West Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 73°F Lo 69°F | Hi 74°F Lo 71°F | Hi 75°F Lo 72°F | Hi 78°F Lo 75°F | Hi 80°F Lo 78°F | Hi 83°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 80°F | Hi 78°F Lo 75°F | Hi 76°F Lo 72°F |
| 14 mph | 14 mph | 14 mph | 13 mph | 12 mph | 11 mph | 10 mph | 11 mph | 10 mph | 14 mph | 15 mph | 14 mph |
| 0.6 in | 0.5 in | 0.3 in | 0.6 in | 1.5 in | 1.8 in | 1.4 in | 1.9 in | 2.4 in | 2.2 in | 0.9 in | 0.5 in |
| 76% | 78% | 75% | 76% | 76% | 76% | 74% | 74% | 74% | 75% | 75% | 77% |
| 36% | 30% | 27% | 25% | 31% | 38% | 36% | 38% | 41% | 39% | 36% | 35% |
| 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 | 28 | 26 | 21 | 23 | 21 | 19 | 24 | 26 | 29 |
| 3 | 2 | 2 | 2 | 5 | 9 | 8 | 10 | 11 | 7 | 4 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 66 | 69 | 82 | 88 | 77 | 60 | 65 | 61 | 58 | 63 | 68 | 69 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 23°C Lo 21°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 27°C | Hi 26°C Lo 24°C | Hi 24°C Lo 23°C |
| 23 km/h | 22 km/h | 23 km/h | 22 km/h | 20 km/h | 17 km/h | 16 km/h | 17 km/h | 17 km/h | 22 km/h | 24 km/h | 23 km/h |
| 15 mm | 13 mm | 7 mm | 16 mm | 38 mm | 45 mm | 37 mm | 47 mm | 60 mm | 55 mm | 22 mm | 14 mm |
| 76% | 78% | 75% | 76% | 76% | 76% | 74% | 74% | 74% | 75% | 75% | 77% |
| 36% | 30% | 27% | 25% | 31% | 38% | 36% | 38% | 41% | 39% | 36% | 35% |
| 1019 mb | 1019 mb | 1018 mb | 1016 mb | 1016 mb | 1015 mb | 1016 mb | 1015 mb | 1014 mb | 1014 mb | 1016 mb | 1018 mb |
| 28 | 26 | 29 | 28 | 26 | 21 | 23 | 21 | 19 | 24 | 26 | 29 |
| 3 | 2 | 2 | 2 | 5 | 9 | 8 | 10 | 11 | 7 | 4 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 66 | 69 | 82 | 88 | 77 | 60 | 65 | 61 | 58 | 63 | 68 | 69 |
| 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.