As of 17:13 EDT

Key Biscayne, FL weather in March

91°

Key Biscayne, Saturday, 8 August, 17:13

Clear. Feels like 103°. High 92°, low 80°.

Pressure30.03 inHg

Wind2 mph S

Humidity69%

Visibility6.2 mi

Dew point78°

See detailed hourly forecast

In March, Key Biscayne, FL averages a high of 77.1° and a low of 67.3°. About 2.1 inches of precipitation fall over the month (7 wet days). The record high is 88.7° (2022) and the record low 38.8° (1980). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	75.7°	65.7°	22%	82.4° (1978)	47.7° (1968)
2	75.9°	65.7°	22%	86.5° (2018)	45° (1968)
3	75.9°	66.2°	25%	87.4° (2021)	38.8° (1980)
4	75.9°	65.8°	22%	85.8° (2019)	48.6° (2013)
5	76.3°	66.7°	20%	86.7° (2023)	45.9° (2010)
6	76.8°	66.7°	18%	86.9° (2020)	51.1° (1962)
7	76.6°	66.7°	27%	86.9° (2023)	52.2° (2013)
8	75.9°	66.4°	27%	85.3° (2023)	51.6° (1962)
9	75.7°	66.6°	25%	83.7° (2003)	51.6° (1965)
10	76.3°	66.7°	23%	87.6° (2024)	52.7° (1961)
11	76.1°	66°	20%	87.1° (2023)	51.6° (1998)
12	76.8°	67.1°	22%	88.7° (2022)	48.7° (1983)
13	76.6°	66.7°	18%	88° (2023)	51.1° (2018)
14	77°	67.1°	22%	83.5° (2017)	49.5° (1993)
15	76.6°	67.3°	27%	84° (1962)	48.6° (1993)
16	77.4°	68°	22%	85.6° (2008)	48.7° (1988)
17	77.4°	68°	32%	83.5° (2015)	56.5° (2017)
18	77.2°	67.6°	27%	87.1° (2024)	54.5° (1978)
19	77.5°	67.6°	30%	85.1° (2017)	54.5° (1960)
20	77.5°	66.9°	25%	86.9° (1963)	52.9° (1988)
21	77°	66.6°	28%	84.4° (1980)	52.2° (1996)
22	77°	66.2°	23%	86° (1962)	53.4° (1986)
23	77.2°	66.9°	25%	85.1° (2015)	50.7° (1986)
24	77.4°	68°	22%	83.5° (2013)	52.3° (1968)
25	77.9°	68.5°	25%	84.9° (2012)	55.4° (1983)
26	77.9°	68.4°	23%	83.7° (2020)	55° (2006)
27	77.7°	68.4°	23%	86.2° (2015)	51.1° (2013)
28	78.3°	69.1°	27%	86.4° (2024)	58.8° (2013)
29	78.6°	69.4°	33%	84.7° (1974)	60.1° (1983)
30	78.8°	70.2°	20%	85.5° (1974)	58.1° (2010)
31	79.5°	70.2°	18%	88.2° (2020)	56.5° (2003)