15-Day Weather Forecast - Liège

15-day weather forecast for Liège: temperatures from 7°C (45°F) to 26°C (79°F). Average daily high 18°C (64°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +19°C

15-Day Temperature Trend

19°14°TodaySep22°15°Tmrw19°16°Sun23°17°Mon26°16°Tue17°13°Wed18°11°Thu18°12°Fri15°13°Sat15°11°Sun17°10°Mon18°10°Tue16°9°Wed12°7°Thu13°7°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +19°/+14°
    feels +18°0.2 mm · 63%11 km/hUV 3 · Low
    07:0620:00
  • Sat, Sep 12Tomorrow
    +22°/+15°
    feels +21°0.1 mm · 11%12 km/hUV 5 · Mod
    07:0819:58
  • Sun, Sep 13Sun
    +19°/+16°
    feels +19°8.7 mm · 86%14 km/hUV 1 · Low
    07:0919:56
  • Mon, Sep 14Mon
    +23°/+17°
    feels +24°1.8 mm · 36%13 km/hUV 4 · Mod
    07:1119:54
  • Tue, Sep 15Tue
    +26°/+16°
    feels +25°0.3 mm · 47%18 km/hUV 4 · Mod
    07:1319:51
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  • Wed, Sep 16Wed
    +17°/+13°
    feels +15°1.2 mm · 42%18 km/hUV 4 · Mod
    07:1419:49
  • Thu, Sep 17Thu
    +18°/+11°
    feels +15°0.9 mm · 33%23 km/hUV 3 · Mod
    07:1619:47
  • Fri, Sep 18Fri
    +18°/+12°
    feels +14°1.5 mm · 28%23 km/hUV 4 · Mod
    07:1719:45
  • Sat, Sep 19Sat
    +15°/+13°
    feels +13°13.2 mm · 27%26 km/hUV 4 · Mod
    07:1919:42
  • Sun, Sep 20Sun
    +15°/+11°
    feels +12°3.0 mm · 25%23 km/hUV 4 · Mod
    07:2019:40
  • Mon, Sep 21Mon
    +17°/+10°
    feels +14°0 mm · 14%15 km/hUV 4 · Mod
    07:2219:38
  • Tue, Sep 22Tue
    +18°/+10°
    feels +16°0 mm · 35%20 km/hUV 4 · Mod
    07:2319:36
  • Wed, Sep 23Wed
    +16°/+9°
    feels +14°7.2 mm · 25%21 km/hUV 4 · Mod
    07:2519:33
  • Thu, Sep 24Thu
    +12°/+7°
    feels +9°7.2 mm · 29%20 km/hUV 4 · Mod
    07:2619:31
  • Fri, Sep 25Fri
    +13°/+7°
    feels +9°3.0 mm · 20%19 km/hUV 4 · Mod
    07:2819:29

Weather Insight

Liège's 15-day outlook ranges from a low of 7°C to a high of 26°C, with an average daytime high near 18°C. That's 2° below the long-term average high of 20°C for this time of year. Air quality is currently good (AQI 26), with no notable outdoor health concerns.

Today vs Normal

19°C-1° below normal

The long-term average high for today is 20°C.

16 of the last 28 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.

2026-08-28: 22°C22°2026-08-29: 21°C21°2026-08-30: 22°C22°2026-08-31: 20°C20°2026-09-01: 21°C21°2026-09-02: 21°C21°2026-09-03: 20°C20°2026-09-04: 24°C24°2026-09-05: 21°C21°2026-09-06: 25°C25°2026-09-07: 29°C29°2026-09-08: 24°C24°

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 Liège

Over the next 15 days, Liège is forecast to see temperatures ranging from 7°C to 26°C, averaging a daily high of 18°C. The extended outlook indicates significant rainfall totalling 48.3 mm spread across 13 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.