As of 08:13 EDT

Key Biscayne, FL weather in October

85°

Key Biscayne, Sunday, 9 August, 08:13

Clear. Feels like 95°. High 93°, low 82°.

Pressure30.06 inHg

Wind3 mph N

Humidity77%

Visibility6.2 mi

Dew point77°

See detailed hourly forecast

In October, Key Biscayne, FL averages a high of 82° and a low of 74.8°. About 4.5 inches of precipitation fall over the month (16 wet days). The record high is 91.8° (2023) and the record low 54.5° (2017). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	83.7°	76.5°	70%	90.1° (2025)	70.9° (2022)
2	83.1°	76.3°	65%	88.9° (1980)	67.5° (1976)
3	83.7°	76.5°	65%	87.4° (1977)	68.5° (1976)
4	82.9°	76.5°	67%	86.4° (2023)	70.9° (1974)
5	83.3°	76.3°	60%	87.8° (2023)	69.6° (2014)
6	83.3°	76.5°	60%	87.4° (2021)	68.2° (1992)
7	83.3°	76.1°	58%	87.8° (2021)	69.6° (1987)
8	83.1°	76.1°	60%	87.3° (2009)	71.1° (1987)
9	83.1°	76.1°	58%	86.7° (2009)	71.1° (1972)
10	82.9°	75.6°	52%	87.6° (2023)	69.6° (2010)
11	82.6°	75.7°	53%	86.7° (1992)	70.3° (2021)
12	82.6°	75.7°	52%	90.3° (2023)	70.5° (2025)
13	82.6°	75.4°	52%	91.8° (2023)	70.2° (1987)
14	82°	75.4°	50%	88.2° (2003)	63.5° (1977)
15	82°	75.2°	53%	88.5° (2023)	66° (1977)
16	81.9°	74.7°	48%	88.3° (2009)	66.4° (2004)
17	81.7°	73.9°	43%	85.6° (1962)	59° (2023)
18	81.5°	74.3°	50%	85.6° (2006)	61.5° (2023)
19	81.7°	74.1°	47%	87.4° (1962)	62.1° (2022)
20	81.5°	73.9°	55%	87.1° (2013)	61.5° (1989)
21	81.1°	73.9°	47%	88.2° (2018)	56.1° (1989)
22	81°	74.1°	52%	87.6° (1962)	63° (1961)
23	81.1°	73.9°	50%	87.1° (2006)	65.3° (1961)
24	81.1°	73.9°	47%	86.2° (2018)	63.3° (1999)
25	81.1°	73.4°	42%	85.5° (1980)	59.9° (2005)
26	80.6°	72.7°	37%	87.8° (2018)	57.6° (2017)
27	81°	73.2°	28%	85.5° (2021)	63° (2005)
28	80.6°	73.4°	35%	86° (1972)	59.5° (2008)
29	80.8°	73°	38%	86.4° (2021)	57.6° (2008)
30	80.2°	73°	38%	87.1° (2002)	54.5° (2017)
31	80.4°	73°	43%	88° (2023)	59.4° (2017)