Phoenix weather live forecast

Today's maximum temperature in Phoenix is expected to be 42°C. Select a day from the live weather forecast for Phoenix, Arizona, USA for more weather parameters.

Thursday
20th Aug
42

31

8

10
Friday
21st Aug
44

32

10

10
Saturday
22nd Aug
45

32

10

10
Sunday
23rd Aug
42

31

9

10
Monday
24th Aug
41

30

12

10

5-day weather forecast updated at 04:00 on Wednesday 19th August 2026 GMT

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

Phoenix weather forecast by day

Below are the detailed weather forecasts for Phoenix for the next 5 days.

Phoenix weather for Thursday 20th August 2026

Expect isolated thunderstorms in Phoenix, Arizona with a maximum temperature of 42°C, very high levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a light breeze of 8 kph from the west.

42
°C maximum temperature
31
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
10
UV index (Very High)
20
% chance of some rain
<2
mm of rainfall expected
VH
very high heat & humidity
8
kph wind from W

Phoenix weather for Friday 21st August 2026

Expect scattered clouds in Phoenix, Arizona with a maximum temperature of 44°C, extreme levels of heat & humidity, maximum UV of 10 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the west.

44
°C maximum temperature
32
°C minimum temperature
scattered clouds
10
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
E
extreme heat & humidity
7
kph wind from W

Phoenix weather for Saturday 22nd August 2026

Expect scattered clouds in Phoenix, Arizona with a maximum temperature of 45°C, extreme levels of heat & humidity, maximum UV of 10 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the west.

45
°C maximum temperature
32
°C minimum temperature
scattered clouds
10
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
E
extreme heat & humidity
6
kph wind from W

Phoenix weather for Sunday 23rd August 2026

Expect scattered clouds in Phoenix, Arizona with a maximum temperature of 42°C, very high levels of heat & humidity, maximum UV of 10 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the west.

42
°C maximum temperature
31
°C minimum temperature
scattered clouds
9
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
VH
very high heat & humidity
9
kph wind from W

Phoenix weather for Monday 24th August 2026

Expect isolated thunderstorms in Phoenix, Arizona with a maximum temperature of 41°C, very high levels of heat & humidity, maximum UV of 10 (Very High) and 12 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a light breeze of 9 kph from the west.