15-Day Weather Forecast - Dallas

15-day weather forecast for Dallas: temperatures from 21°C (70°F) to 39°C (102°F). Average daily high 36°C (97°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +37°C

15-Day Temperature Trend

37°27°TodaySep39°27°Tmrw39°28°Sun39°28°Mon39°28°Tue38°29°Wed38°28°Thu35°27°Fri26°22°Sat30°21°Sun33°22°Mon35°23°Tue37°24°Wed37°26°Thu38°27°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +37°/+27°
    feels +40°37.8 mm · 4%15 km/hUV 7 · Hi
    07:0819:38
  • Sat, Sep 12Tomorrow
    +39°/+27°
    feels +43°0 mm · 3%16 km/hUV 7 · Hi
    07:0919:37
  • Sun, Sep 13Sun
    +39°/+28°
    feels +41°20 km/hUV 7 · Hi
    07:0919:35
  • Mon, Sep 14Mon
    +39°/+28°
    feels +39°22 km/hUV 7 · Hi
    07:1019:34
  • Tue, Sep 15Tue
    +39°/+28°
    feels +41°0 mm · 1%22 km/hUV 7 · Hi
    07:1019:33
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  • Wed, Sep 16Wed
    +38°/+29°
    feels +40°0 mm · 1%22 km/hUV 7 · Hi
    07:1119:31
  • Thu, Sep 17Thu
    +38°/+28°
    feels +39°0 mm · 11%23 km/hUV 7 · Hi
    07:1219:30
  • Fri, Sep 18Fri
    +35°/+27°
    feels +38°0.7 mm · 11%21 km/hUV 6 · Hi
    07:1219:29
  • Sat, Sep 19Sat
    +26°/+22°
    feels +27°5.9 mm · 13%19 km/hUV 3 · Mod
    07:1319:27
  • Sun, Sep 20Sun
    +30°/+21°
    feels +29°0 mm · 10%13 km/hUV 7 · Hi
    07:1419:26
  • Mon, Sep 21Mon
    +33°/+22°
    feels +33°0 mm · 9%11 km/hUV 7 · Hi
    07:1419:25
  • Tue, Sep 22Tue
    +35°/+23°
    feels +36°0 mm · 7%10 km/hUV 7 · Hi
    07:1519:23
  • Wed, Sep 23Wed
    +37°/+24°
    feels +37°0 mm · 11%11 km/hUV 7 · Hi
    07:1619:22
  • Thu, Sep 24Thu
    +37°/+26°
    feels +37°0 mm · 13%14 km/hUV 7 · Hi
    07:1619:21
  • Fri, Sep 25Fri
    +38°/+27°
    feels +37°0 mm · 13%9 km/hUV 7 · Hi
    07:1719:19

Weather Insight

Dallas's 15-day outlook ranges from a low of 21°C to a high of 39°C, with an average daytime high near 36°C. That's 3° above the long-term average high of 33°C for this time of year. It continues a recent pattern — 28 of the last 28 days with published data have run warmer than normal. Air quality is currently good (AQI 33), with no notable outdoor health concerns.

Today vs Normal

37°C+4° above normal

The long-term average high for today is 33°C.

28 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: 40°C40°2026-08-29: 40°C40°2026-08-30: 40°C40°2026-08-31: 40°C40°2026-09-01: 39°C39°2026-09-02: 39°C39°2026-09-03: 36°C36°2026-09-04: 37°C37°2026-09-05: 38°C38°2026-09-06: 39°C39°2026-09-07: 39°C39°2026-09-08: 40°C40°

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

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.

Extended Outlook for Dallas

Over the next 15 days, Dallas is forecast to see temperatures ranging from 20°C to 40°C, averaging a daily high of 36°C. The extended outlook indicates significant rainfall totalling 44.4 mm spread across 3 days. High temperatures may pose heat stress - stay hydrated and limit sun exposure during peak afternoon hours.