March weather in Key Biscayne, FL
The average temperature in Key Biscayne in March is 74.0°F (67.1°F–80.9°F). Average precipitation: 2.37 inches.
March is a spring month in Key Biscayne, and is cooler than the annual average of 78.7°F. Daily temperatures swing about 13.8°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 11h 51m. For travel, March is a comfortable month to visit.
Avg High
80.9°F
Avg Low
67.1°F
Precipitation
2.37 in
Daylight
11h 51m
March records in Key Biscayne
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| March 1 | 87.1°F (2023) | 48.0°F (2010) | 2.18 in (2026) |
| March 2 | 86.0°F (2017) | 51.1°F (2009) | 1.49 in (1998) |
| March 3 | 89.1°F (2018) | 46.0°F (2013) | 0.29 in (2018) |
| March 4 | 87.1°F (2023) | 44.1°F (2013) | 0.73 in (2005) |
| March 5 | 90.0°F (2019) | 44.1°F (2010) | 0.85 in (2001) |
| March 6 | 87.1°F (2019) | 48.0°F (2010) | 0.56 in (2008) |
| March 7 | 87.1°F (2023) | 48.9°F (2013) | 0.40 in (2021) |
| March 8 | 90.0°F (2023) | 48.9°F (2013) | 0.27 in (2022) |
| March 9 | 87.1°F (2023) | 50.0°F (2001) | 0.09 in (2012) |
| March 10 | 87.1°F (2022) | 53.1°F (2005) | 1.42 in (2005) |
| March 11 | 87.1°F (2022) | 51.1°F (2005) | 0.40 in (2003) |
| March 12 | 88.0°F (2022) | 54.0°F (2011) | 1.07 in (2018) |
| March 13 | 89.1°F (2022) | 50.0°F (2005) | 0.51 in (2010) |
| March 14 | 89.1°F (2023) | 53.1°F (2018) | 0.79 in (2017) |
| March 15 | 84.9°F (2003) | 52.0°F (2018) | 1.85 in (2003) |
| March 16 | 86.0°F (2019) | 51.1°F (2018) | 1.08 in (2026) |
| March 17 | 89.1°F (2008) | 52.0°F (2018) | 1.46 in (2026) |
| March 18 | 87.1°F (2022) | 57.0°F (2007) | 1.43 in (2005) |
| March 19 | 88.0°F (2024) | 55.0°F (2010) | 1.55 in (2001) |
| March 20 | 87.1°F (2003) | 52.0°F (2005) | 3.02 in (1998) |
| March 21 | 88.0°F (2018) | 57.9°F (2010) | 1.39 in (2013) |
| March 22 | 88.0°F (2003) | 55.0°F (2025) | 1.11 in (2009) |
| March 23 | 88.0°F (2003) | 51.1°F (2018) | 2.61 in (2024) |
| March 24 | 89.1°F (2015) | 57.0°F (2001) | 2.72 in (2024) |
| March 25 | 88.0°F (2022) | 53.1°F (2006) | 1.10 in (2022) |
| March 26 | 87.1°F (2020) | 52.0°F (2006) | 0.67 in (2010) |
| March 27 | 88.0°F (2015) | 48.0°F (2013) | 1.04 in (1999) |
| March 28 | 88.0°F (2015) | 48.9°F (2013) | 0.71 in (2003) |
| March 29 | 88.0°F (2023) | 57.0°F (2013) | 0.38 in (2011) |
| March 30 | 86.0°F (2020) | 55.9°F (2005) | 0.95 in (2001) |
| March 31 | 86.0°F (2021) | 54.0°F (2003) | 2.04 in (2023) |