January weather in Key Biscayne, FL
The average temperature in Key Biscayne in January is 70.1°F (62.8°F–77.5°F). Average precipitation: 2.44 inches.
January is a winter month in Key Biscayne, and is cooler than the annual average of 78.7°F. Daily temperatures swing about 14.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 10h 34m. For travel, January is one of the best months of the year to visit.
Avg High
77.5°F
Avg Low
62.8°F
Precipitation
2.44 in
Daylight
10h 34m
January records in Key Biscayne
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 86.0°F (2023) | 42.1°F (2001) | 0.53 in (2002) |
| January 2 | 86.0°F (2016) | 46.9°F (2026) | 0.07 in (2014) |
| January 3 | 84.9°F (2014) | 39.9°F (2008) | 0.66 in (2018) |
| January 4 | 86.0°F (2019) | 41.0°F (2002) | 0.68 in (2016) |
| January 5 | 84.9°F (2015) | 43.0°F (2002) | 0.72 in (1999) |
| January 6 | 86.0°F (2023) | 39.9°F (2010) | 1.06 in (2022) |
| January 7 | 84.0°F (2014) | 42.1°F (2010) | 0.60 in (2024) |
| January 8 | 86.0°F (2017) | 42.1°F (2006) | 0.06 in (2017) |
| January 9 | 82.9°F (2026) | 44.1°F (2002) | 0.49 in (2022) |
| January 10 | 82.9°F (2016) | 35.1°F (2010) | 0.65 in (1999) |
| January 11 | 84.0°F (2016) | 36.0°F (2010) | 0.56 in (2024) |
| January 12 | 84.0°F (2014) | 39.0°F (2010) | 2.77 in (2022) |
| January 13 | 82.9°F (2023) | 46.0°F (2010) | 1.71 in (2026) |
| January 14 | 82.9°F (2019) | 48.0°F (2011) | 1.54 in (2026) |
| January 15 | 84.0°F (2014) | 43.0°F (2023) | 0.59 in (2005) |
| January 16 | 82.0°F (2017) | 42.1°F (2023) | 1.36 in (2016) |
| January 17 | 84.0°F (2024) | 42.1°F (2014) | 1.21 in (2022) |
| January 18 | 81.0°F (2017) | 44.1°F (2014) | 1.41 in (2011) |
| January 19 | 82.0°F (2017) | 39.0°F (2014) | 0.62 in (2004) |
| January 20 | 84.9°F (2023) | 41.0°F (2014) | 0.23 in (2025) |
| January 21 | 84.0°F (2023) | 42.1°F (2009) | 0.49 in (2019) |
| January 22 | 84.0°F (2017) | 41.0°F (2020) | 2.56 in (2026) |
| January 23 | 84.9°F (2023) | 41.0°F (2020) | 2.34 in (2026) |
| January 24 | 87.1°F (2023) | 36.0°F (2003) | 5.82 in (1999) |
| January 25 | 82.9°F (2019) | 46.0°F (2016) | 0.18 in (2019) |
| January 26 | 84.9°F (2023) | 48.9°F (2000) | 0.24 in (2003) |
| January 27 | 84.9°F (2026) | 39.9°F (2000) | 0.58 in (2019) |
| January 28 | 84.0°F (2017) | 45.0°F (2000) | 1.07 in (2019) |
| January 29 | 84.0°F (2024) | 48.0°F (2019) | 0.69 in (2016) |
| January 30 | 82.9°F (2023) | 42.1°F (2022) | 0.89 in (2014) |
| January 31 | 84.0°F (2023) | 43.0°F (2022) | 1.26 in (2014) |