15-Day Weather Forecast - Calgary

15-day weather forecast for Calgary: temperatures from 3°C (37°F) to 24°C (75°F). Average daily high 17°C (63°F) over the next 15 days.

Hourly Forecast by Day

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

15-Day Temperature Trend

11°5°TodaySep9°4°Tmrw14°3°Sun12°8°Mon10°7°Tue16°5°Wed23°6°Thu24°9°Fri23°11°Sat21°10°Sun17°11°Mon17°10°Tue19°7°Wed21°10°Thu16°7°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +11°/+5°
    feels +7°0 mm · 11%17 km/hUV 5 · Mod
    07:0519:58
  • Sat, Sep 12Tomorrow
    +9°/+4°
    feels +6°0 mm · 5%9 km/hUV 2 · Low
    07:0719:56
  • Sun, Sep 13Sun
    +14°/+3°
    feels +9°0 mm · 46%28 km/hUV 5 · Mod
    07:0819:54
  • Mon, Sep 14Mon
    +12°/+8°
    feels +8°0.3 mm · 46%33 km/hUV 4 · Mod
    07:1019:52
  • Tue, Sep 15Tue
    +10°/+7°
    feels +6°0 mm · 41%15 km/hUV 2 · Low
    07:1119:49
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  • Wed, Sep 16Wed
    +16°/+5°
    feels +14°0 mm · 36%13 km/hUV 5 · Mod
    07:1319:47
  • Thu, Sep 17Thu
    +23°/+6°
    feels +20°0 mm · 2%13 km/hUV 5 · Mod
    07:1519:45
  • Fri, Sep 18Fri
    +24°/+9°
    feels +21°0 mm · 1%14 km/hUV 5 · Mod
    07:1619:43
  • Sat, Sep 19Sat
    +23°/+11°
    feels +19°0 mm · 5%16 km/hUV 5 · Mod
    07:1819:40
  • Sun, Sep 20Sun
    +21°/+10°
    feels +17°0.3 mm · 16%20 km/hUV 4 · Mod
    07:1919:38
  • Mon, Sep 21Mon
    +17°/+11°
    feels +14°3.6 mm · 25%27 km/hUV 3 · Mod
    07:2119:36
  • Tue, Sep 22Tue
    +17°/+10°
    feels +14°0.9 mm · 38%25 km/hUV 3 · Mod
    07:2219:34
  • Wed, Sep 23Wed
    +19°/+7°
    feels +17°0 mm · 23%11 km/hUV 4 · Mod
    07:2419:31
  • Thu, Sep 24Thu
    +21°/+10°
    feels +17°0 mm · 16%19 km/hUV 2 · Low
    07:2519:29
  • Fri, Sep 25Fri
    +16°/+7°
    feels +13°0 mm · 19%21 km/hUV 4 · Mod
    07:2719:27

Weather Insight

Calgary's 15-day outlook ranges from a low of 3°C to a high of 24°C, with an average daytime high near 17°C. That's 1° below the long-term average high of 18°C for this time of year. It continues a recent pattern — 14 of the last 28 days with published data have run cooler than normal. Air quality is currently good (AQI 25), with no notable outdoor health concerns.

Today vs Normal

11°C-7° below normal

The long-term average high for today is 18°C.

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

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

2026-08-28: 21°C21°2026-08-29: 21°C21°2026-08-30: 16°C16°2026-08-31: 21°C21°2026-09-01: 23°C23°2026-09-02: 21°C21°2026-09-03: 18°C18°2026-09-04: 13°C13°2026-09-05: 11°C11°2026-09-06: 13°C13°2026-09-07: 11°C11°2026-09-08: 18°C18°

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 3°C to 24°C, averaging a daily high of 17°C. The extended outlook indicates occasional showers on 4 days, with 5.1 mm total accumulation. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.