15-Day Weather Forecast - Hamilton

15-day weather forecast for Hamilton: temperatures from 9°C (48°F) to 29°C (84°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 +25°C

15-Day Temperature Trend

25°13°TodaySep29°14°Tmrw27°18°Sun19°13°Mon29°16°Tue23°17°Wed20°17°Thu21°15°Fri23°15°Sat15°9°Sun13°10°Mon20°10°Tue22°13°Wed25°15°Thu20°14°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +25°/+13°
    feels +25°13 km/hUV 6 · Mod
    06:5419:36
  • Sat, Sep 12Tomorrow
    +29°/+14°
    feels +31°0 mm · 13%13 km/hUV 6 · Mod
    06:5519:34
  • Sun, Sep 13Sun
    +27°/+18°
    feels +27°0 mm · 20%22 km/hUV 6 · Mod
    06:5619:32
  • Mon, Sep 14Mon
    +19°/+13°
    feels +17°0 mm · 20%15 km/hUV 6 · Mod
    06:5719:31
  • Tue, Sep 15Tue
    +29°/+16°
    feels +30°5.3 mm · 48%23 km/hUV 6 · Mod
    06:5919:29
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  • Wed, Sep 16Wed
    +23°/+17°
    feels +26°0.9 mm · 48%13 km/hUV 6 · Mod
    07:0019:27
  • Thu, Sep 17Thu
    +20°/+17°
    feels +19°0 mm · 38%19 km/hUV 4 · Mod
    07:0119:25
  • Fri, Sep 18Fri
    +21°/+15°
    feels +19°0 mm · 33%13 km/hUV 5 · Mod
    07:0219:23
  • Sat, Sep 19Sat
    +23°/+15°
    feels +23°0 mm · 15%25 km/hUV 2 · Low
    07:0319:22
  • Sun, Sep 20Sun
    +15°/+9°
    feels +11°0 mm · 15%25 km/hUV 5 · Mod
    07:0419:20
  • Mon, Sep 21Mon
    +13°/+10°
    feels +9°0 mm · 10%22 km/hUV 5 · Mod
    07:0519:18
  • Tue, Sep 22Tue
    +20°/+10°
    feels +18°0 mm · 19%16 km/hUV 5 · Mod
    07:0619:16
  • Wed, Sep 23Wed
    +22°/+13°
    feels +20°0 mm · 14%18 km/hUV 5 · Mod
    07:0719:14
  • Thu, Sep 24Thu
    +25°/+15°
    feels +23°0 mm · 16%17 km/hUV 5 · Mod
    07:0919:13
  • Fri, Sep 25Fri
    +20°/+14°
    feels +18°0.6 mm · 17%29 km/hUV 5 · Mod
    07:1019:11

Weather Insight

Hamilton's 15-day outlook ranges from a low of 9°C to a high of 29°C, with an average daytime high near 22°C. That's 2° below the long-term average high of 24°C for this time of year. Air quality is currently good (AQI 48), with no notable outdoor health concerns.

Today vs Normal

25°C+1° above normal

The long-term average high for today is 24°C.

11 of the last 19 days with published data ran above normal.

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

2026-08-19: 28°C28°2026-08-20: 27°C27°2026-08-21: 27°C27°2026-08-22: 26°C26°2026-08-23: 21°C21°2026-08-24: 20°C20°2026-08-25: 27°C27°2026-08-26: 27°C27°2026-08-27: 25°C25°2026-08-28: 25°C25°2026-08-29: 27°C27°2026-08-30: 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 Hamilton

Over the next 15 days, Hamilton is forecast to see temperatures ranging from 9°C to 30°C, averaging a daily high of 22°C. The extended outlook indicates occasional showers on 3 days, with 6.8 mm total accumulation. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.