15-Day Weather Forecast - Phoenix

15-day weather forecast for Phoenix: temperatures from 26°C (79°F) to 41°C (106°F). Average daily high 38°C (100°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +41°C

15-Day Temperature Trend

41°32°TodaySep40°29°Tmrw39°31°Sun37°26°Mon34°26°Tue36°29°Wed38°30°Thu41°33°Fri38°32°Sat38°32°Sun39°32°Mon39°30°Tue35°30°Wed38°31°Thu40°33°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +41°/+32°
    feels +43°0 mm · 4%19 km/hUV 8 · Hi
    06:0918:39
  • Sat, Sep 12Tomorrow
    +40°/+29°
    feels +44°0 mm · 7%19 km/hUV 8 · Hi
    06:0918:38
  • Sun, Sep 13Sun
    +39°/+31°
    feels +41°0.8 mm · 8%17 km/hUV 8 · Hi
    06:1018:37
  • Mon, Sep 14Mon
    +37°/+26°
    feels +40°27.9 mm · 37%35 km/hUV 7 · Hi
    06:1118:35
  • Tue, Sep 15Tue
    +34°/+26°
    feels +36°8.6 mm · 53%25 km/hUV 7 · Hi
    06:1118:34
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  • Wed, Sep 16Wed
    +36°/+29°
    feels +38°2.4 mm · 29%13 km/hUV 7 · Hi
    06:1218:32
  • Thu, Sep 17Thu
    +38°/+30°
    feels +40°0.3 mm · 12%13 km/hUV 7 · Hi
    06:1318:31
  • Fri, Sep 18Fri
    +41°/+33°
    feels +41°0 mm · 5%12 km/hUV 7 · Hi
    06:1318:30
  • Sat, Sep 19Sat
    +38°/+32°
    feels +39°0 mm · 7%22 km/hUV 7 · Hi
    06:1418:28
  • Sun, Sep 20Sun
    +38°/+32°
    feels +40°0 mm · 13%18 km/hUV 7 · Hi
    06:1518:27
  • Mon, Sep 21Mon
    +39°/+32°
    feels +40°0 mm · 13%14 km/hUV 7 · Hi
    06:1518:26
  • Tue, Sep 22Tue
    +39°/+30°
    feels +40°0 mm · 29%23 km/hUV 7 · Hi
    06:1618:24
  • Wed, Sep 23Wed
    +35°/+30°
    feels +36°0 mm · 35%21 km/hUV 6 · Mod
    06:1718:23
  • Thu, Sep 24Thu
    +38°/+31°
    feels +38°0 mm · 36%11 km/hUV 7 · Hi
    06:1718:22
  • Fri, Sep 25Fri
    +40°/+33°
    feels +40°0 mm · 17%13 km/hUV 7 · Hi
    06:1818:20

Weather Insight

Phoenix's 15-day outlook ranges from a low of 26°C to a high of 41°C, with an average daytime high near 38°C. Air quality is currently Moderate (AQI 63), driven mainly by PM2.5 at 15 μg/m³.

Today vs Normal

41°C+3° above normal

The long-term average high for today is 38°C.

18 of the last 28 days with published data ran above normal.

It continues that pattern - today's forecast is also running above normal.

2026-08-28: 42°C42°2026-08-29: 41°C41°2026-08-30: 39°C39°2026-08-31: 32°C32°2026-09-01: 36°C36°2026-09-02: 38°C38°2026-09-03: 38°C38°2026-09-04: 38°C38°2026-09-05: 39°C39°2026-09-06: 40°C40°2026-09-07: 40°C40°2026-09-08: 40°C40°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Extended Outlook for Phoenix

Over the next 15 days, Phoenix is forecast to see temperatures ranging from 25°C to 41°C, averaging a daily high of 38°C. The extended outlook indicates significant rainfall totalling 40 mm spread across 5 days. High temperatures may pose heat stress - stay hydrated and limit sun exposure during peak afternoon hours.