Key Largo Weather in December
Average highs run from 79°F on December 1 to 75°F on December 31, and lows from 68°F to 65°F. Normal precipitation for the month is 2.13 in over about 6 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 77°F
- Average low
- 67°F
- Precipitation
- 2.13 in
- Record high
- 87°FDec 4, 2023
- Record low
- 37°FDec 14, 2010
- Chance of a freeze
- 0%
- Daylight
- 10 h 42 min to 10 h 36 min
- Cloud cover
- 51%
- Humidity
- 78%
- Dew point
- 66°F
- Wind
- 12.8 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 79°F | 68°F | 85°F 2022 | 55°F 2011 | 18% |
| Dec 2 | 79°F | 68°F | 85°F 2010 | 56°F 2020 | 18% |
| Dec 3 | 79°F | 68°F | 85°F 2018 | 52°F 2008 | 18% |
| Dec 4 | 79°F | 68°F | 87°F 2023 | 55°F 2024 | 18% |
| Dec 5 | 79°F | 68°F | 85°F 2018 | 56°F 2007 | 19% |
| Dec 6 | 78°F | 68°F | 86°F 2013 | 51°F 2010 | 19% |
| Dec 7 | 78°F | 68°F | 85°F 2016 | 46°F 2010 | 19% |
| Dec 8 | 78°F | 68°F | 84°F 2017 | 44°F 2010 | 19% |
| Dec 9 | 78°F | 68°F | 84°F 2017 | 46°F 2010 | 19% |
| Dec 10 | 78°F | 68°F | 84°F 2018 | 46°F 2020 | 20% |
| Dec 11 | 78°F | 67°F | 84°F 2009 | 47°F 2014 | 20% |
| Dec 12 | 78°F | 67°F | 84°F 2012 | 53°F 2018 | 20% |
| Dec 13 | 78°F | 67°F | 84°F 2019 | 54°F 2010 | 20% |
| Dec 14 | 78°F | 67°F | 84°F 2012 | 37°F 2010 | 20% |
| Dec 15 | 77°F | 67°F | 84°F 2013 | 41°F 2010 | 21% |
| Dec 16 | 77°F | 67°F | 84°F 2013 | 45°F 2010 | 21% |
| Dec 17 | 77°F | 67°F | 84°F 2019 | 47°F 2004 | 21% |
| Dec 18 | 77°F | 67°F | 83°F 2015 | 54°F 2007 | 21% |
| Dec 19 | 77°F | 66°F | 85°F 2015 | 56°F 2023 | 21% |
| Dec 20 | 77°F | 66°F | 84°F 2016 | 51°F 2010 | 21% |
| Dec 21 | 77°F | 66°F | 82°F 2012 | 52°F 2004 | 21% |
| Dec 22 | 76°F | 66°F | 82°F 2020 | 50°F 2005 | 21% |
| Dec 23 | 76°F | 66°F | 83°F 2022 | 51°F 2005 | 22% |
| Dec 24 | 76°F | 66°F | 82°F 2011 | 50°F 2022 | 22% |
| Dec 25 | 76°F | 66°F | 82°F 2013 | 47°F 2022 | 22% |
| Dec 26 | 76°F | 65°F | 82°F 2015 | 45°F 2022 | 22% |
| Dec 27 | 76°F | 65°F | 82°F 2012 | 43°F 2010 | 22% |
| Dec 28 | 76°F | 65°F | 81°F 2011 | 40°F 2010 | 21% |
| Dec 29 | 76°F | 65°F | 82°F 2015 | 49°F 2009 | 21% |
| Dec 30 | 76°F | 65°F | 83°F 2021 | 54°F 2012 | 21% |
| Dec 31 | 75°F | 65°F | 83°F 2015 | 49°F 2025 | 21% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 6:50 AM, sunset 5:32 PM
- December 31
- sunrise 7:07 AM, sunset 5:43 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00088841 (Tavernier), public domain. Records: NOAA GHCN-Daily, station USC00084412, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.