15-Day Weather Forecast - Calgary

15-day weather forecast for Calgary: temperatures from 2°C (36°F) to 26°C (79°F). Average daily high 18°C (64°F) over the next 15 days.

Hourly Forecast by Day

Today·10 Sep
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Temperature · peaks at +17°C

15-Day Temperature Trend

17°9°TodaySep11°5°Tmrw9°2°Sat10°4°Sun12°6°Mon18°5°Tue22°8°Wed26°10°Thu25°12°Fri26°14°Sat26°10°Sun18°8°Mon20°7°Tue14°9°Wed17°5°Thu
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Thu, Sep 10Today
    +17°/+9°
    feels +15°1.5 mm · 68%21 km/hUV 2 · Low
    07:0420:01
  • Fri, Sep 11Tomorrow
    +11°/+5°
    feels +8°0 mm · 22%22 km/hUV 4 · Mod
    07:0519:58
  • Sat, Sep 12Sat
    +9°/+2°
    feels +6°0 mm · 6%12 km/hUV 3 · Low
    07:0719:56
  • Sun, Sep 13Sun
    +10°/+4°
    feels +5°0.6 mm · 55%25 km/hUV 3 · Mod
    07:0819:54
  • Mon, Sep 14Mon
    +12°/+6°
    feels +6°0.7 mm · 38%29 km/hUV 3 · Low
    07:1019:52
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  • Tue, Sep 15Tue
    +18°/+5°
    feels +14°0.6 mm · 35%13 km/hUV 5 · Mod
    07:1119:49
  • Wed, Sep 16Wed
    +22°/+8°
    feels +19°0 mm · 21%10 km/hUV 5 · Mod
    07:1319:47
  • Thu, Sep 17Thu
    +26°/+10°
    feels +23°0 mm · 3%11 km/hUV 5 · Mod
    07:1519:45
  • Fri, Sep 18Fri
    +25°/+12°
    feels +23°0 mm · 4%15 km/hUV 5 · Mod
    07:1619:43
  • Sat, Sep 19Sat
    +26°/+14°
    feels +24°0 mm · 10%12 km/hUV 4 · Mod
    07:1819:40
  • Sun, Sep 20Sun
    +26°/+10°
    feels +24°0.2 mm · 21%20 km/hUV 5 · Mod
    07:1919:38
  • Mon, Sep 21Mon
    +18°/+8°
    feels +15°0.1 mm · 21%10 km/hUV 4 · Mod
    07:2119:36
  • Tue, Sep 22Tue
    +20°/+7°
    feels +17°0 mm · 23%19 km/hUV 5 · Mod
    07:2219:34
  • Wed, Sep 23Wed
    +14°/+9°
    feels +10°0.6 mm · 19%15 km/hUV 3 · Mod
    07:2419:31
  • Thu, Sep 24Thu
    +17°/+5°
    feels +12°0 mm · 13%21 km/hUV 4 · Mod
    07:2519:29

Weather Insight

Calgary's 15-day outlook ranges from a low of 2°C to a high of 26°C, with an average daytime high near 18°C. That's 1° below the long-term average high of 19°C for this time of year. Air quality is currently good (AQI 23), with no notable outdoor health concerns.

Today vs Normal

17°C-2° below normal

The long-term average high for today is 19°C.

11 of the last 20 days with published data ran above normal.

That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.

2026-08-19: 24°C24°2026-08-20: 23°C23°2026-08-21: 25°C25°2026-08-22: 24°C24°2026-08-23: 23°C23°2026-08-24: 21°C21°2026-08-25: 23°C23°2026-08-26: 26°C26°2026-08-27: 25°C25°2026-08-28: 21°C21°2026-08-29: 21°C21°2026-08-30: 16°C16°

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 Calgary

Over the next 15 days, Calgary is forecast to see temperatures ranging from 1°C to 27°C, averaging a daily high of 18°C. The extended outlook indicates occasional showers on 7 days, with 4.3 mm total accumulation. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.