Weather & Climate in Key West, FL
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Key West has a warm climate with an average annual temperature of 79°F (26°C). Winters average 71°F in January while summers reach 85°F in July / relatively mild seasonal variation. Annual precipitation totals 40.4 inches. The city sits at an elevation of 5 feet.
Temperature
71°F Jan (21°C)
85°F Jul (30°C)
| Annual Average | 78.9°F |
| 46% above US avg | |
| January Average | 71°F (21°C) |
| July Average | 85°F (30°C) |
Geography
| Elevation | 5 ft (2 m) |
| Area | 7.2 sq mi (18.8 km²) |
| Population Density | 4,611/sq mi |
| Coordinates | 24.5651°N, 81.7755°W |
| Timezone | America/New_York |
| County | Monroe County County |
| Nearest Airport | Key West International (EYW) 1 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.6 / 100 |
| Social Vulnerability | 53.9 / 100 |
| Community Resilience | 29.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively High |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | No Rating |
| Lightning | Relatively High |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Hurricane History
22 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Milton | Category 4 | 132 mph | 293 km |
| 2024 | Rafael | Category 3 | 115 mph | 218 km |
| 2022 | Ian | Category 5 | 161 mph | 114 km |
| 2021 | Ida | Category 1 | 81 mph | 280 km |
| 2021 | Elsa | Category 1 | 75 mph | 268 km |
| 2020 | Eta | Category 1 | 75 mph | 254 km |
| 2017 | Irma | Category 4 | 132 mph | 29 km |
| 2008 | Gustav | Category 4 | 155 mph | 272 km |
| 2008 | Ike | Category 1 | 81 mph | 247 km |
| 2005 | Rita | Category 4 | 127 mph | 76 km |
| 2005 | Dennis | Category 4 | 138 mph | 149 km |
| 2005 | Katrina | Category 3 | 115 mph | 64 km |
| 2005 | Wilma | Category 3 | 127 mph | 127 km |
| 2004 | Charley | Category 4 | 150 mph | 115 km |
| 2001 | Michelle | Category 4 | 132 mph | 262 km |
| 1999 | Irene | Category 1 | 81 mph | 18 km |
| 1998 | Georges | Category 2 | 104 mph | 8 km |
| 1996 | Lili | Category 2 | 98 mph | 242 km |
| 1992 | Andrew | Category 5 | 167 mph | 129 km |
| 1987 | Floyd | Category 1 | 75 mph | 32 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
52 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 51 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 26, 2005 | EF2 | 72 km | 1.2 mi | 0 |
| Apr 27, 1980 | EF2 | 38 km | 0.5 mi | 0 |
| Jun 18, 1972 | EF2 | 3 km | 1.5 mi | 0 |
| Jun 18, 1972 | EF2 | 11 km | 1.0 mi | 0 |
| Jun 2, 1966 | EF2 | 2 km | 0.1 mi | 0 |
| Oct 8, 2024 | EF1 | 4 km | 0.3 mi | 0 |
| Feb 2, 1998 | EF1 | 72 km | 1.0 mi | 0 |
| Jun 20, 1983 | EF1 | 23 km | 3.0 mi | 0 |
| Jun 3, 1982 | EF1 | 2 km | 0.3 mi | 0 |
| Sep 9, 1972 | EF1 | 13 km | 0.5 mi | 0 |
| Jun 18, 1972 | EF1 | 95 km | 2.0 mi | 0 |
| May 24, 1970 | EF1 | 42 km | 0.1 mi | 0 |
| Sep 8, 1965 | EF1 | 70 km | 0.1 mi | 0 |
| Mar 14, 1964 | EF1 | 45 km | 0.1 mi | 0 |
| Jun 6, 1963 | EF1 | 2 km | 0.1 mi | 0 |
| Jul 17, 1957 | EF1 | 17 km | 0.1 mi | 0 |
| Jun 4, 1953 | EF1 | 2 km | 0.1 mi | 0 |
| Mar 19, 2024 | EF0 | 40 km | 0.3 mi | 0 |
| Feb 18, 2024 | EF0 | 32 km | 4.6 mi | 0 |
| Nov 15, 2023 | EF0 | 43 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 71°F (21°C) | 1.8 in | Coldest |
| February | 72°F (22°C) | 1.5 in | |
| March | 74°F (24°C) | 1.5 in | Driest |
| April | 78°F (26°C) | 2.1 in | |
| May | 81°F (27°C) | 3.1 in | |
| June | 84°F (29°C) | 4.2 in | |
| July | 85°F (30°C) | 3.6 in | |
| August | 86°F (30°C) | 5.4 in | Warmest |
| September | 84°F (29°C) | 7.2 in | Wettest |
| October | 81°F (27°C) | 5.7 in | |
| November | 77°F (25°C) | 2.1 in | |
| December | 73°F (23°C) | 2.2 in |
Key West has a seasonal temperature swing of 15°F / from 71°F in January to 86°F in August. Total annual precipitation is 40.4 inches, with September being the wettest month (7.2") and March the driest (1.5").