15-Day Weather Forecast - Lucerne

15-day weather forecast for Lucerne: temperatures from 6°C (43°F) to 26°C (79°F). Average daily high 20°C (68°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +21°C

15-Day Temperature Trend

21°10°TodaySep22°9°Tmrw24°10°Sun24°15°Mon26°13°Tue19°15°Wed19°12°Thu21°11°Fri20°12°Sat19°14°Sun17°10°Mon19°8°Tue24°12°Wed11°8°Thu8°6°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +21°/+10°
    feels +20°5 km/hUV 5 · Mod
    06:5819:46
  • Sat, Sep 12Tomorrow
    +22°/+9°
    feels +22°6 km/hUV 5 · Mod
    07:0019:44
  • Sun, Sep 13Sun
    +24°/+10°
    feels +24°0.2 mm · 38%8 km/hUV 5 · Mod
    07:0119:42
  • Mon, Sep 14Mon
    +24°/+15°
    feels +25°0 mm · 38%4 km/hUV 5 · Mod
    07:0219:40
  • Tue, Sep 15Tue
    +26°/+13°
    feels +27°5 km/hUV 5 · Mod
    07:0419:38
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  • Wed, Sep 16Wed
    +19°/+15°
    feels +21°12.3 mm · 55%7 km/hUV 4 · Mod
    07:0519:36
  • Thu, Sep 17Thu
    +19°/+12°
    feels +19°0 mm · 28%6 km/hUV 4 · Mod
    07:0619:34
  • Fri, Sep 18Fri
    +21°/+11°
    feels +21°0 mm · 29%7 km/hUV 5 · Mod
    07:0819:32
  • Sat, Sep 19Sat
    +20°/+12°
    feels +20°0 mm · 21%4 km/hUV 5 · Mod
    07:0919:30
  • Sun, Sep 20Sun
    +19°/+14°
    feels +17°0.6 mm · 24%20 km/hUV 5 · Mod
    07:1019:28
  • Mon, Sep 21Mon
    +17°/+10°
    feels +16°0 mm · 20%4 km/hUV 5 · Mod
    07:1219:26
  • Tue, Sep 22Tue
    +19°/+8°
    feels +20°0 mm · 33%3 km/hUV 5 · Mod
    07:1319:24
  • Wed, Sep 23Wed
    +24°/+12°
    feels +21°4.5 mm · 33%16 km/hUV 4 · Mod
    07:1419:22
  • Thu, Sep 24Thu
    +11°/+8°
    feels +9°26.1 mm · 27%11 km/hUV 4 · Mod
    07:1619:20
  • Fri, Sep 25Fri
    +8°/+6°
    feels +6°29.7 mm · 27%11 km/hUV 4 · Mod
    07:1719:18

Weather Insight

Lucerne's 15-day outlook ranges from a low of 6°C to a high of 26°C, with an average daytime high near 20°C. That's 2° above the long-term average high of 18°C for this time of year. It continues a recent pattern — 26 of the last 28 days with published data have run warmer than normal. Air quality is currently good (AQI 35), with no notable outdoor health concerns.

Today vs Normal

21°C+3° above normal

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

26 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: 21°C21°2026-08-29: 21°C21°2026-08-30: 23°C23°2026-08-31: 21°C21°2026-09-01: 21°C21°2026-09-02: 23°C23°2026-09-03: 23°C23°2026-09-04: 26°C26°2026-09-05: 21°C21°2026-09-06: 24°C24°2026-09-07: 26°C26°2026-09-08: 27°C27°

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 Lucerne

Over the next 15 days, Lucerne is forecast to see temperatures ranging from 6°C to 26°C, averaging a daily high of 20°C. The extended outlook indicates significant rainfall totalling 73.4 mm spread across 6 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.