10-day forecast for Key Biscayne, FL: 71° to 86°, with precipitation expected on 6 days. The table below breaks each day into morning, afternoon, evening and overnight.
86°
Best day: Friday, October 30
76° · 2.46 in
Worst day: Monday, November 2
Tap any day below to see morning, afternoon, evening and overnight.
Fri, 3086° / 76°0.02
Morning78°feels 79°
Afternoon86°feels 96°
Evening81°feels 87°
Overnight79°feels 79°
86 °
Key Biscayne, Friday, 30 October
Light rain. High 86°, low 76°.
Pressure29.97 inHg
Wind5.5 mph NE
Humidity70%
Visibility6.2 mi
Dew point73°
Sat, 3181° / 75°0.19
Morning76°feels 77°
Afternoon81°feels 85°
Evening78°feels 79°
Overnight80°feels 80°
81 °
Key Biscayne, Saturday, 31 October
Light rain. High 81°, low 75°.
Pressure30.09 inHg
Wind10.3 mph E
Humidity75%
Visibility3.1 mi
Dew point73°
Sun, 0179° / 73°1.1
Morning74°feels 75°
Afternoon76°feels 78°
Evening75°feels 76°
Overnight78°feels 79°
79 °
Key Biscayne, Sunday, 1 November
Rain. High 79°, low 73°.
Pressure30.12 inHg
Wind9.9 mph E
Humidity85%
Visibility2.1 mi
Dew point72°
Mon, 0276° / 71°2.46
Morning71°feels 72°
Afternoon75°feels 76°
Evening73°feels 74°
Overnight72°feels 73°
76 °
Key Biscayne, Monday, 2 November
Heavy rain. High 76°, low 71°.
Pressure30.00 inHg
Wind6.2 mph NE
Humidity91%
Visibility1.7 mi
Dew point71°
Tue, 0382° / 72°0.08
Morning75°feels 77°
Afternoon81°feels 84°
Evening76°feels 78°
Overnight76°feels 77°
82 °
Key Biscayne, Tuesday, 3 November
Light rain. High 82°, low 72°.
Pressure29.88 inHg
Wind8.3 mph NE
Humidity66%
Visibility—
Dew point68°
Wed, 0481° / 77°0.21
Morning79°feels 81°
Afternoon81°feels 84°
Evening80°feels 80°
Overnight78°feels 79°
81 °
Key Biscayne, Wednesday, 4 November
Light rain. High 81°, low 77°.
Pressure29.83 inHg
Wind8.1 mph SE
Humidity68%
Visibility—
Dew point69°
Thu, 0585° / 77°0.03
Morning79°feels 81°
Afternoon83°feels 87°
Evening80°feels 83°
Overnight78°feels 79°
85 °
Key Biscayne, Thursday, 5 November
Light rain. High 85°, low 77°.
Pressure29.77 inHg
Wind15.6 mph W
Humidity58%
Visibility—
Dew point67°
Fri, 0683° / 75°0
Morning77°feels 77°
Afternoon82°feels 82°
Evening80°feels 81°
Overnight77°feels 77°
83 °
Key Biscayne, Friday, 6 November
Clear. High 83°, low 75°.
Pressure29.80 inHg
Wind14.9 mph NW
Humidity48%
Visibility—
Dew point59°
Sat, 0780° / 72°0
Morning74°feels 74°
Afternoon78°feels 78°
Evening77°feels 77°
Overnight75°feels 75°
80 °
Key Biscayne, Saturday, 7 November
Clear. High 80°, low 72°.
Pressure29.94 inHg
Wind14.2 mph NW
Humidity42%
Visibility—
Dew point53°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Key Biscayne, FL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.