Duck Key, FL Weather
Duck Key, FL climate is hot during summer when temperatures tend to be in the 80's and mild during winter when temperatures tend to be in the 60's.
The warmest month of the year is August with an average maximum temperature of 90.30 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 55.90 degrees Fahrenheit.
Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 16 degrees Fahrenheit, and moderate during winter with an average difference of 21 degrees Fahrenheit.
The annual average precipitation at Duck Key is 47.46 Inches. Summer months tend to be wetter than winter months. The wettest month of the year is August with an average rainfall of 7.43 Inches.
Weather Data
Current Conditions
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Mostly Cloudy, 82°F | Humidity: 74% | Dewpoint: 73°F |
| Wind Speed: E 4.6 MPH (4 KT) | Heat Index: 87°F | ||
| Barometer: 30.08 in. | Wind Chill: 82°F |
Weather Forecast
| Hi: 85°F | Today: Intervals of clouds and sunshine with a slight chance of showers. Highs in the mid 80s. East to southeast winds 5 to 10 mph. Chance of rain 10 percent. | |
| Lo: 75°F | ||
| Hi: 81°F | Tuesday: Increasing cloudiness. A slight chance of showers. Highs in the lower 80s. East winds 10 to 15 mph. Chance of rain 20 percent. | |
| Lo: 73°F | ||
| Hi: 80°F | Wednesday: Mostly cloudy. Showers likely. A slight chance of thunderstorms. Highs near 80. Lows 70 to 75. Southeast to south winds 10 to 15 mph. Chance of rain 60 percent both periods. | |
| Lo: 73°F | ||
| Hi: 80°F | Thanksgiving day: Mostly cloudy with a chance of showers...Especially in the morning. Highs near 80. Chance of rain 50 percent. | |
| Lo: 68°F | ||
| Hi: 75°F | Friday: Partly cloudy and windy. Highs in the mid 70s. | |
| Lo: 63°F | ||
| Hi: 73°F | Saturday: Clear. Highs 70 to 75. Lows 60 to 65. | |
| Lo: 63°F |
Moon, Sunrise and Sunset
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Moon Phase: First Quarter Moon | Civil Twilight: 6:20 AM EST |
Sunrise: 6:45 AM EST |
| Sunset: 5:34 PM EST |
Civil Twilight: 5:58 PM EST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 77.1 | 77.8 | 80.2 | 83.4 | 86.7 | 88.9 | 90.1 | 90.3 | 89.4 | 86.6 | 82.8 | 78.8 | 84.3 |
| Mean °F | 66.5 | 67.4 | 70.3 | 73.6 | 77.7 | 81.2 | 82.1 | 82.2 | 81.5 | 77.9 | 73.4 | 68.7 | 75.2 |
| Min °F | 55.9 | 56.9 | 60.4 | 63.8 | 68.7 | 73.4 | 74.1 | 74.1 | 73.6 | 69.2 | 64.0 | 58.5 | 66.1 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 1.94 | 1.63 | 1.87 | 2.06 | 5.06 | 7.25 | 4.73 | 7.43 | 7.20 | 4.26 | 2.46 | 1.57 | 47.46 |

