15-Day Weather Forecast - Geneva

15-day weather forecast for Geneva: temperatures from 8°C (46°F) to 28°C (82°F). Average daily high 22°C (72°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +22°C

15-Day Temperature Trend

22°11°TodaySep24°12°Tmrw26°13°Sun27°14°Mon28°13°Tue25°16°Wed23°15°Thu23°11°Fri23°11°Sat21°12°Sun19°12°Mon22°10°Tue25°12°Wed14°9°Thu10°8°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +22°/+11°
    feels +21°10 km/hUV 5 · Mod
    07:0819:54
  • Sat, Sep 12Tomorrow
    +24°/+12°
    feels +22°10 km/hUV 5 · Mod
    07:0919:52
  • Sun, Sep 13Sun
    +26°/+13°
    feels +25°0 mm · 5%6 km/hUV 5 · Mod
    07:1019:50
  • Mon, Sep 14Mon
    +27°/+14°
    feels +26°0 mm · 4%16 km/hUV 5 · Mod
    07:1219:49
  • Tue, Sep 15Tue
    +28°/+13°
    feels +29°8 km/hUV 5 · Mod
    07:1319:47
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  • Wed, Sep 16Wed
    +25°/+16°
    feels +24°0.3 mm · 23%20 km/hUV 5 · Mod
    07:1419:45
  • Thu, Sep 17Thu
    +23°/+15°
    feels +21°0 mm · 6%18 km/hUV 4 · Mod
    07:1519:43
  • Fri, Sep 18Fri
    +23°/+11°
    feels +22°0 mm · 13%11 km/hUV 5 · Mod
    07:1719:41
  • Sat, Sep 19Sat
    +23°/+11°
    feels +20°0 mm · 10%11 km/hUV 5 · Mod
    07:1819:39
  • Sun, Sep 20Sun
    +21°/+12°
    feels +19°0 mm · 16%11 km/hUV 5 · Mod
    07:1919:37
  • Mon, Sep 21Mon
    +19°/+12°
    feels +15°0 mm · 10%18 km/hUV 5 · Mod
    07:2019:35
  • Tue, Sep 22Tue
    +22°/+10°
    feels +21°0 mm · 18%6 km/hUV 5 · Mod
    07:2219:33
  • Wed, Sep 23Wed
    +25°/+12°
    feels +21°2.4 mm · 25%15 km/hUV 5 · Mod
    07:2319:31
  • Thu, Sep 24Thu
    +14°/+9°
    feels +14°30.9 mm · 24%10 km/hUV 5 · Mod
    07:2419:29
  • Fri, Sep 25Fri
    +10°/+8°
    feels +8°20.1 mm · 25%11 km/hUV 3 · Low
    07:2619:27

Weather Insight

Geneva's 15-day outlook ranges from a low of 8°C to a high of 28°C, with an average daytime high near 22°C. That's 2° above the long-term average high of 20°C for this time of year. It continues a recent pattern — 23 of the last 28 days with published data have run warmer than normal. Air quality is currently good (AQI 36), with no notable outdoor health concerns.

Today vs Normal

22°C+2° above normal

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

23 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: 22°C22°2026-08-30: 25°C25°2026-08-31: 23°C23°2026-09-01: 24°C24°2026-09-02: 25°C25°2026-09-03: 26°C26°2026-09-04: 28°C28°2026-09-05: 26°C26°2026-09-06: 28°C28°2026-09-07: 29°C29°2026-09-08: 30°C30°

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 Geneva

Over the next 15 days, Geneva is forecast to see temperatures ranging from 7°C to 29°C, averaging a daily high of 22°C. The extended outlook indicates significant rainfall totalling 53.7 mm spread across 4 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.