July weather in Key Biscayne, FL
The average temperature in Key Biscayne in July is 84.9°F (79.0°F–90.8°F). Average precipitation: 5.64 inches.
July is a summer month in Key Biscayne, and is warmer than the annual average of 78.7°F. Daily temperatures swing about 11.8°F between overnight low and afternoon high. Expect about 15 days with precipitation. Daylight averages about 13h 27m. For travel, July is a wet month.
Avg High
90.8°F
Avg Low
79.0°F
Precipitation
5.64 in
Daylight
13h 27m
July records in Key Biscayne
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 93.9°F (2014) | 73.0°F (2002) | 2.50 in (2014) |
| July 2 | 93.9°F (2020) | 72.0°F (2002) | 3.64 in (2000) |
| July 3 | 93.0°F (2019) | 71.1°F (2008) | 1.50 in (2000) |
| July 4 | 93.9°F (2020) | 71.1°F (2007) | 0.79 in (2000) |
| July 5 | 93.0°F (2020) | 72.0°F (2001) | 0.24 in (2017) |
| July 6 | 93.0°F (2019) | 73.9°F (2002) | 4.23 in (2021) |
| July 7 | 93.9°F (2023) | 73.9°F (1999) | 2.85 in (2006) |
| July 8 | 95.0°F (2023) | 73.9°F (2002) | 1.55 in (2011) |
| July 9 | 93.9°F (2020) | 73.0°F (2006) | 2.34 in (2005) |
| July 10 | 95.0°F (2020) | 71.1°F (2002) | 2.74 in (2014) |
| July 11 | 93.9°F (2020) | 73.0°F (2002) | 1.57 in (2018) |
| July 12 | 93.9°F (2022) | 73.0°F (2002) | 1.79 in (2024) |
| July 13 | 93.9°F (2022) | 72.0°F (2002) | 1.38 in (2017) |
| July 14 | 93.9°F (2022) | 73.0°F (2008) | 1.18 in (2021) |
| July 15 | 93.9°F (2023) | 73.0°F (2001) | 1.29 in (2015) |
| July 16 | 93.9°F (2023) | 73.0°F (2008) | 2.99 in (2001) |
| July 17 | 93.9°F (2023) | 73.9°F (2000) | 2.65 in (2000) |
| July 18 | 93.0°F (2023) | 73.0°F (2000) | 1.69 in (2020) |
| July 19 | 93.0°F (2014) | 73.9°F (2013) | 3.68 in (2013) |
| July 20 | 93.0°F (2017) | 73.0°F (2004) | 0.51 in (2020) |
| July 21 | 93.9°F (2018) | 73.9°F (2004) | 1.31 in (2018) |
| July 22 | 96.1°F (2018) | 73.0°F (2004) | 0.56 in (1998) |
| July 23 | 96.1°F (2018) | 73.9°F (2006) | 1.19 in (2012) |
| July 24 | 96.1°F (2023) | 73.9°F (2008) | 2.63 in (2018) |
| July 25 | 96.1°F (2015) | 75.0°F (2005) | 1.16 in (2021) |
| July 26 | 93.9°F (2018) | 73.9°F (2009) | 0.98 in (2015) |
| July 27 | 93.0°F (2018) | 73.0°F (2004) | 2.34 in (2022) |
| July 28 | 93.9°F (2015) | 73.0°F (2004) | 0.46 in (2013) |
| July 29 | 93.0°F (2014) | 75.0°F (2000) | 1.35 in (2004) |
| July 30 | 93.9°F (2014) | 75.9°F (2016) | 0.28 in (2017) |
| July 31 | 95.0°F (2017) | 73.0°F (2004) | 0.56 in (2025) |