October weather in Key West, FL
The average temperature in Key West in October is 79.9°F (74.6°F–85.2°F). Average precipitation: 6.01 inches.
October is a fall month in Key West, and is warmer than the annual average of 77.4°F. Daily temperatures swing about 10.6°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 11h 25m. For travel, October is a wet month.
Avg High
85.2°F
Avg Low
74.6°F
Precipitation
6.01 in
Daylight
11h 25m
October records in Key West
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 90.0°F (2017) | 75.0°F (2022) | 0.40 in (2023) |
| October 2 | 90.0°F (2016) | 73.9°F (2012) | 1.39 in (2020) |
| October 3 | 91.0°F (2024) | 75.0°F (2017) | 0.61 in (2013) |
| October 4 | 90.0°F (2024) | 71.1°F (2022) | 0.37 in (2016) |
| October 5 | 90.0°F (2020) | 70.0°F (2014) | 2.69 in (2017) |
| October 6 | 90.0°F (2020) | 66.9°F (2014) | 1.04 in (2024) |
| October 7 | 90.0°F (2014) | 73.0°F (2022) | 1.86 in (2019) |
| October 8 | 89.1°F (2012) | 73.9°F (2018) | 1.02 in (2018) |
| October 9 | 90.0°F (2014) | 75.0°F (2013) | 1.38 in (2023) |
| October 10 | 90.0°F (2022) | 71.1°F (2025) | 1.99 in (2025) |
| October 11 | 90.0°F (2022) | 73.0°F (2025) | 0.67 in (2023) |
| October 12 | 89.1°F (2022) | 71.1°F (2025) | 0.93 in (2014) |
| October 13 | 89.1°F (2014) | 72.0°F (2025) | 1.28 in (2021) |
| October 14 | 89.1°F (2023) | 73.0°F (2025) | 0.97 in (2025) |
| October 15 | 88.0°F (2014) | 71.1°F (2013) | 1.12 in (2023) |
| October 16 | 89.1°F (2020) | 73.0°F (2013) | 1.52 in (2021) |
| October 17 | 88.0°F (2018) | 69.1°F (2023) | 0.54 in (2018) |
| October 18 | 88.0°F (2013) | 68.0°F (2014) | 1.07 in (2012) |
| October 19 | 88.0°F (2016) | 64.9°F (2014) | 1.06 in (2020) |
| October 20 | 88.0°F (2017) | 66.0°F (2022) | 2.21 in (2020) |
| October 21 | 89.1°F (2025) | 71.1°F (2022) | 1.62 in (2014) |
| October 22 | 88.0°F (2015) | 69.1°F (2023) | 1.89 in (2014) |
| October 23 | 90.0°F (2019) | 69.1°F (2023) | 0.70 in (2017) |
| October 24 | 89.1°F (2019) | 73.0°F (2012) | 0.19 in (2019) |
| October 25 | 88.0°F (2019) | 70.0°F (2022) | 0.68 in (2019) |
| October 26 | 88.0°F (2025) | 66.9°F (2017) | 0.49 in (2020) |
| October 27 | 88.0°F (2025) | 66.0°F (2014) | 1.06 in (2016) |
| October 28 | 88.0°F (2019) | 70.0°F (2018) | 0.43 in (2017) |
| October 29 | 88.0°F (2019) | 69.1°F (2012) | 1.05 in (2021) |
| October 30 | 88.0°F (2019) | 62.1°F (2017) | 0.11 in (2016) |
| October 31 | 88.0°F (2015) | 55.9°F (2017) | 0.33 in (2019) |