15-Day Weather Forecast - Lille

15-day weather forecast for Lille: temperatures from 8°C (46°F) to 25°C (77°F). Average daily high 19°C (66°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +20°C

15-Day Temperature Trend

20°14°TodaySep23°15°Tmrw20°16°Sun24°18°Mon25°16°Tue19°13°Wed17°13°Thu19°12°Fri16°14°Sat17°11°Sun18°10°Mon20°13°Tue17°10°Wed12°8°Thu14°9°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +20°/+14°
    feels +21°0.9 mm · 95%13 km/hUV 4 · Mod
    07:1720:10
  • Sat, Sep 12Tomorrow
    +23°/+15°
    feels +22°0 mm · 6%16 km/hUV 5 · Mod
    07:1820:08
  • Sun, Sep 13Sun
    +20°/+16°
    feels +20°0.4 mm · 75%17 km/hUV 4 · Mod
    07:2020:06
  • Mon, Sep 14Mon
    +24°/+18°
    feels +24°0.7 mm · 31%16 km/hUV 5 · Mod
    07:2120:04
  • Tue, Sep 15Tue
    +25°/+16°
    feels +25°0.3 mm · 39%22 km/hUV 5 · Mod
    07:2320:01
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  • Wed, Sep 16Wed
    +19°/+13°
    feels +16°0.9 mm · 28%20 km/hUV 3 · Low
    07:2419:59
  • Thu, Sep 17Thu
    +17°/+13°
    feels +16°2.1 mm · 39%23 km/hUV 2 · Low
    07:2619:57
  • Fri, Sep 18Fri
    +19°/+12°
    feels +14°0.3 mm · 17%25 km/hUV 4 · Mod
    07:2719:55
  • Sat, Sep 19Sat
    +16°/+14°
    feels +15°13.5 mm · 22%22 km/hUV 4 · Mod
    07:2919:52
  • Sun, Sep 20Sun
    +17°/+11°
    feels +13°0.9 mm · 16%23 km/hUV 4 · Mod
    07:3019:50
  • Mon, Sep 21Mon
    +18°/+10°
    feels +16°0 mm · 16%12 km/hUV 4 · Mod
    07:3219:48
  • Tue, Sep 22Tue
    +20°/+13°
    feels +18°0.9 mm · 25%22 km/hUV 4 · Mod
    07:3319:46
  • Wed, Sep 23Wed
    +17°/+10°
    feels +16°4.8 mm · 25%22 km/hUV 4 · Mod
    07:3519:44
  • Thu, Sep 24Thu
    +12°/+8°
    feels +8°8.7 mm · 25%22 km/hUV 4 · Mod
    07:3719:41
  • Fri, Sep 25Fri
    +14°/+9°
    feels +10°3.0 mm · 25%22 km/hUV 4 · Mod
    07:3819:39

Weather Insight

Lille's 15-day outlook ranges from a low of 8°C to a high of 25°C, with an average daytime high near 19°C. That's 1° 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

20°C0° below normal

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

18 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: 20°C20°2026-08-30: 22°C22°2026-08-31: 22°C22°2026-09-01: 22°C22°2026-09-02: 22°C22°2026-09-03: 22°C22°2026-09-04: 23°C23°2026-09-05: 22°C22°2026-09-06: 25°C25°2026-09-07: 26°C26°2026-09-08: 22°C22°

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 Lille

Over the next 15 days, Lille is forecast to see temperatures ranging from 8°C to 26°C, averaging a daily high of 19°C. The extended outlook indicates significant rainfall totalling 37.4 mm spread across 13 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.