January weather in Key West, FL
The average temperature in Key West in January is 68.8°F (62.9°F–74.7°F). Average precipitation: 2.01 inches.
January is a winter month in Key West, and is cooler than the annual average of 77.4°F. Daily temperatures swing about 11.8°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 10h 38m. For travel, January is one of the best months of the year to visit.
Avg High
74.7°F
Avg Low
62.9°F
Precipitation
2.01 in
Daylight
10h 38m
January records in Key West
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 84.9°F (2016) | 53.1°F (2024) | 0.16 in (2014) |
| January 2 | 84.0°F (2016) | 52.0°F (2026) | 0.27 in (2016) |
| January 3 | 82.9°F (2013) | 54.0°F (2026) | 0.44 in (2016) |
| January 4 | 84.0°F (2015) | 53.1°F (2018) | 4.70 in (2014) |
| January 5 | 82.9°F (2015) | 55.0°F (2018) | 0.19 in (2014) |
| January 6 | 82.0°F (2013) | 55.0°F (2018) | 0.24 in (2016) |
| January 7 | 82.0°F (2013) | 55.0°F (2014) | 0.84 in (2024) |
| January 8 | 82.9°F (2013) | 55.9°F (2017) | 0.19 in (2026) |
| January 9 | 82.9°F (2013) | 55.0°F (2025) | 0.11 in (2014) |
| January 10 | 82.0°F (2013) | 57.0°F (2021) | 0.08 in (2024) |
| January 11 | 82.9°F (2013) | 55.9°F (2019) | 0.02 in (2026) |
| January 12 | 82.9°F (2015) | 55.9°F (2023) | 0.82 in (2018) |
| January 13 | 82.0°F (2013) | 62.1°F (2021) | 1.17 in (2021) |
| January 14 | 82.0°F (2013) | 54.0°F (2018) | 0.22 in (2016) |
| January 15 | 82.9°F (2013) | 55.0°F (2023) | 0.36 in (2016) |
| January 16 | 82.0°F (2013) | 48.9°F (2023) | 1.10 in (2024) |
| January 17 | 81.0°F (2013) | 60.1°F (2021) | 1.18 in (2025) |
| January 18 | 82.0°F (2017) | 52.0°F (2018) | 0.06 in (2021) |
| January 19 | 82.0°F (2023) | 55.0°F (2014) | 0.17 in (2025) |
| January 20 | 82.0°F (2023) | 54.0°F (2014) | 0.54 in (2022) |
| January 21 | 82.0°F (2023) | 55.9°F (2019) | 0.76 in (2015) |
| January 22 | 82.0°F (2015) | 50.0°F (2020) | 1.24 in (2016) |
| January 23 | 82.0°F (2023) | 55.9°F (2014) | 0.44 in (2017) |
| January 24 | 82.9°F (2026) | 52.0°F (2016) | 0.30 in (2019) |
| January 25 | 82.9°F (2026) | 52.0°F (2016) | 0.60 in (2019) |
| January 26 | 82.9°F (2026) | 55.0°F (2020) | 0.17 in (2022) |
| January 27 | 82.0°F (2017) | 53.1°F (2020) | 0.66 in (2019) |
| January 28 | 82.0°F (2023) | 53.1°F (2019) | 0.26 in (2016) |
| January 29 | 82.9°F (2023) | 52.0°F (2019) | 0.31 in (2014) |
| January 30 | 82.9°F (2023) | 50.0°F (2022) | 0.62 in (2014) |
| January 31 | 82.9°F (2023) | 45.0°F (2022) | 1.39 in (2020) |