Weather in Key West, Florida for December 2025
Until now, December 2025 in Key West has been nearly identical to the historical average, with a temperature of 23.5 °F (showing only a slight deviation of 0 °F).
The forecast for the next days in Key West predicts temperatures to be around 24 °F, close to the historical average.
In general, the average temperature in Key West at the beginning of December is 23.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 22.3 °F by the end of December.
Key West experiences moderate rainfall in December, with an average of 10 rainy days and a total precipitation of 57.6 mm.
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Key West Weather December
Temperatures trend during December in Key West
December weather in Key West day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Cloudy | 25° /22° | 0 mm | 6 | |
| Dec. 2 |  Patchy rain possible | 24° /22° | 0 mm | 6 | |
| Dec. 3 |  Fog | 23° /21° | 0.1 mm | 6 | |
| Dec. 4 | Fog | 23° /20° | 0 mm | 5 | |
| Dec. 5 |  Overcast | 23° /21° | 0 mm | 5 | |
| Dec. 6 | Overcast | 23° /21° | 0 mm | 5 | |
| Dec. 7 | Overcast | 23° /20° | 0 mm | 5 | |
| Dec. 8 | Patchy rain possible | 24° /21° | 1.4 mm | 6 | |
| Dec. 9 | Overcast | 24° /22° | 1 mm | 5 | |
| Dec. 10 | Patchy rain possible | 24° /22° | 0.1 mm | 5 | |
| Dec. 11 | Patchy rain possible | 24° /20° | 1.3 mm | 5 | |
| Dec. 12 | Overcast | 22° /19° | 0 mm | 5 | |
| Dec. 13 | Light rain shower | 24° /21° | 1.8 mm | 5 | |
| Dec. 14 | Light rain shower | 23° /21° | 2.8 mm | 5 | |
| Dec. 15 |  Sunny | 24° /21° | 0.1 mm | 1 | |
| Dec. 16 |  Partly cloudy | 23° /21° | 0 mm | 1 | |
| Dec. 17 | Patchy rain possible | 26° /23° | 3.9 mm | 1.1 | |
| Dec. 18 | Patchy rain possible | 24° /24° | 0.1 mm | 1 | |
| Dec. 19 | Patchy rain possible | 25° /23° | 0.2 mm | 0 | |
| Dec. 20 | Patchy rain possible | 24° /24° | 0.2 mm | 5 | |
| Dec. 21 | Patchy rain possible | 25° /25° | 0.1 mm | 5 | |
| Dec. 22 | Patchy rain possible | 25° /24° | 0.5 mm | 5 | |
| Dec. 23 | Patchy rain possible | 24° /24° | 0.6 mm | 5 | |
| Dec. 24 | Patchy rain possible | 24° /24° | 0.7 mm | 5 | |
| Dec. 25 | Partly cloudy | 23° /23° | 0.1 mm | 6 | |
| Dec. 26 | Patchy rain possible | 24° /23° | 0.1 mm | 5 | |
| Dec. 27 | Sunny | 23° /22° | 0 mm | 6 | |
| Dec. 28 | Sunny | 22° /21° | 0 mm | 6 | |
| Dec. 29 | Light rain shower | 22° /21° | 14.1 mm | 5 | |
| Dec. 30 | Patchy rain possible | 21° /20° | 0.1 mm | 5 | |
| Dec. 31 | Cloudy | 21° /20° | 0 mm | 5 | |
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Key West in December - FAQ
December rainfall patterns in Key West
UV exposure in Key West during December
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Where is Key West?Get accurate weather forecasts for Key West, located at latitude 24.555 and longitude -81.782. Stay updated with localized weather information tailored for Key West.