WEATHER IN Key West
Climate tables. Data for Key West.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | 5.0 (1886) | 18.6 | 21.4 | 24.3 | 32.2 (1877) |
| february | 6.7 (1917) | 19.5 | 22.4 | 25.2 | 30.6 (1874) |
| march | 8.3 (1986) | 20.7 | 23.6 | 26.4 | 31.7 (1874) |
| april | 8.9 (1987) | 22.8 | 25.5 | 28.1 | 32.8 (1881) |
| may | 17.2 (1877) | 24.7 | 27.3 | 29.9 | 33.9 (1881) |
| june | 18.3 (1932) | 26.3 | 28.9 | 31.5 | 35.6 (1881) |
| july | 20.0 (1888) | 27.0 | 29.7 | 32.3 | 36.1 (1880) |
| august | 20.0 (1894) | 26.9 | 29.7 | 32.6 | 36.1 (1956) |
| september | 20.6 (1898) | 26.2 | 28.9 | 31.7 | 35.0 (1956) |
| october | 15.0 (1892) | 24.9 | 27.4 | 29.9 | 33.9 (1962) |
| november | 9.4 (1959) | 22.3 | 24.8 | 27.2 | 32.8 (1876) |
| december | 6.7 (1876) | 20.2 | 22.8 | 25.4 | 31.1 (1876) |
| year | 5.0 (1886) | 22.8 | 25.4 | 28.1 | 36.1 (1880) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 47 | 0.0 (1990) | 448 (1983) | 163 (1983) |
| february | 39 | 0.0 (1834) | 183 (1872) | 110 (2012) |
| march | 39 | 0.0 (1838) | 260 (1853) | 134 (1987) |
| april | 53 | 0.0 (1870) | 334 (1941) | 157 (1985) |
| may | 79 | 0.0 (1927) | 331 (1904) | 183 (1960) |
| june | 107 | 3 (1834) | 433 (1853) | 131 (1992) |
| july | 92 | 8 (1942) | 347 (1947) | 181 (1916) |
| august | 136 | 18 (1836) | 402 (1926) | 245 (2005) |
| september | 184 | 43 (1961) | 469 (1963) | 213 (1998) |
| october | 144 | 10 (1838) | 598 (1933) | 344 (1933) |
| november | 52 | 0.0 (1995) | 703 (1980) | 578 (1980) |
| december | 55 | 0.3 (1834) | 284 (1986) | 169 (1986) |
| year | 1012 | 508 (1974) | 1810 (1870) | 578 (1980) |
Number of days with solid, liquid, and mixed precipitation
| Type of precipitation | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Wind speed, m/s
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different wind directions, %
| direction | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Air humidity, %
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Snow cover
| Month | jul | aug | sep | oct | nov | dec | jan | feb | mar | apr | may | jun | Year |
| number of days | |||||||||||||
| height (sm) | |||||||||||||
| max height (sm) |
Cloudy, score
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| total | |||||||||||||
| low |
Number of clear, cloudy and cloudy days
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| Total cloud | |||||||||||||
| Low cloud | |||||||||||||
Number of days with different phenomena
| phenomenon | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different types of clouds, %
| type of clouds | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |