Key West weather live forecast

Today's maximum temperature in Key West is expected to be 30°C. Select a day from the live weather forecast for Key West, Florida, USA for more weather parameters.

Saturday
19th Sep
30

26

4

8
Sunday
20th Sep
30

27

6

8
Monday
21st Sep
30

27

5

8
Tuesday
22nd Sep
31

27

5

4
Wednesday
23rd Sep
31

28

4

9

5-day weather forecast updated at 04:00 on Saturday 19th September 2026 GMT

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The 5-day weather forecast for Florida (Key West) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Key West weather forecast by day

Below are the detailed weather forecasts for Key West for the next 5 days.

Key West weather for Saturday 19th September 2026

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 77% chance of some rain and a gentle breeze of 13 kph from the east.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
8
UV index (Very High)
77
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from E

Key West weather for Sunday 20th September 2026

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 77% chance of some rain and a light breeze of 12 kph from the south.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
8
UV index (Very High)
77
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from S

Key West weather for Monday 21st September 2026

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 87% chance of some rain and a gentle breeze of 14 kph from the south.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
87
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from S

Key West weather for Tuesday 22nd September 2026

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 78% chance of some rain and a gentle breeze of 17 kph from the south.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
4
UV index (Moderate)
78
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
17
kph wind from S

Key West weather for Wednesday 23rd September 2026

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 17 kph from the south-east.