Key West, FL Weather
Key West, FL climate is hot during summer when temperatures tend to be in the 80's and warm during winter when temperatures tend to be in the 70's.
The warmest month of the year is August with an average maximum temperature of 89.50 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 65.20 degrees Fahrenheit.
Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 10 degrees Fahrenheit, and fairly limited during winter with an average difference of 10 degrees Fahrenheit.
The annual average precipitation at Key West is 38.94 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is September with an average rainfall of 5.45 Inches.
Weather Data
Current Conditions
|
Fair, 78°F | Humidity: 82% | Dewpoint: 72°F |
| Wind Speed: E 10.4 MPH (9 KT) | Heat Index: 78°F | ||
| Barometer: 30.05 in. | Wind Chill: 78°F |
Weather Forecast
 | Hi: 81°F | Rest to today: Mostly cloudy with a slight chance of showers. Highs in the lower 80s. Mainly east winds near 10 mph early...Increasing to 10 to 15 mph. Chance of rain 20 percent. |
| Lo: 73°F | ||
 | Hi: 80°F | Wednesday: Mostly cloudy with a 60 percent chance of showers. A slight chance of thunderstorms. Highs near 80. Southeast winds 10 to 15 mph. |
| Lo: 73°F | ||
| Hi: 80°F | Thanksgiving day: Mostly cloudy with a chance of showers...Especially in the morning. Highs near 80. South to southwest winds 10 to 15 mph...Shifting to northwest near 15 mph and gusty by late. Chance of rain 50 percent. |
| Lo: 68°F | ||
 | Hi: 73°F | Friday: Partly cloudy and windy. Highs 70 to 75. |
| Lo: 65°F | ||
 | Hi: 75°F | Saturday: Mostly clear. Highs in the mid 70s. Lows in the mid 60s. |
| Lo: 70°F | ||
 | Hi: 78°F | Sunday: Partly cloudy. Highs 75 to 80. Lows near 70. |
| Lo: 70°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waxing Gibbous Moon | Civil Twilight: 6:24 AM EST |
Sunrise: 6:48 AM EST |
| Sunset: 5:38 PM EST |
Civil Twilight: 6:02 PM EST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 75.3 | 75.9 | 78.8 | 81.9 | 85.4 | 88.1 | 89.4 | 89.5 | 88.2 | 84.7 | 80.6 | 76.7 | 82.9 |
| Mean °F | 70.3 | 70.8 | 73.8 | 77.0 | 80.7 | 83.4 | 84.5 | 84.4 | 83.4 | 80.2 | 76.3 | 72.0 | 78.1 |
| Min °F | 65.2 | 65.7 | 68.8 | 72.1 | 75.9 | 78.7 | 79.6 | 79.2 | 78.5 | 75.7 | 71.9 | 67.3 | 73.2 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 2.22 | 1.51 | 1.86 | 2.06 | 3.48 | 4.57 | 3.27 | 5.40 | 5.45 | 4.34 | 2.64 | 2.14 | 38.94 |
