15-Day Weather Forecast - Plymouth

15-day weather forecast for Plymouth: temperatures from 7°C (45°F) to 20°C (68°F). Average daily high 17°C (63°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°15°TodaySep20°14°Tmrw19°17°Sun19°17°Mon18°15°Tue17°11°Wed18°15°Thu17°14°Fri19°15°Sat17°11°Sun18°10°Mon18°14°Tue14°11°Wed13°9°Thu14°7°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +20°/+15°
    feels +19°0.5 mm · 36%20 km/hUV 3 · Mod
    06:4519:39
  • Sat, Sep 12Tomorrow
    +20°/+14°
    feels +19°0 mm · 4%22 km/hUV 3 · Mod
    06:4719:37
  • Sun, Sep 13Sun
    +19°/+17°
    feels +20°5.1 mm · 71%18 km/hUV 3 · Low
    06:4919:34
  • Mon, Sep 14Mon
    +19°/+17°
    feels +19°2.4 mm · 31%19 km/hUV 5 · Mod
    06:5019:32
  • Tue, Sep 15Tue
    +18°/+15°
    feels +18°0 mm · 18%24 km/hUV 5 · Mod
    06:5219:30
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  • Wed, Sep 16Wed
    +17°/+11°
    feels +15°0 mm · 18%17 km/hUV 4 · Mod
    06:5319:28
  • Thu, Sep 17Thu
    +18°/+15°
    feels +17°0.6 mm · 47%19 km/hUV 4 · Mod
    06:5519:25
  • Fri, Sep 18Fri
    +17°/+14°
    feels +14°0.6 mm · 25%20 km/hUV 4 · Mod
    06:5619:23
  • Sat, Sep 19Sat
    +19°/+15°
    feels +17°3.0 mm · 36%21 km/hUV 4 · Mod
    06:5819:21
  • Sun, Sep 20Sun
    +17°/+11°
    feels +15°0 mm · 24%16 km/hUV 4 · Mod
    06:5919:19
  • Mon, Sep 21Mon
    +18°/+10°
    feels +18°0 mm · 21%10 km/hUV 4 · Mod
    07:0119:17
  • Tue, Sep 22Tue
    +18°/+14°
    feels +17°1.0 mm · 27%19 km/hUV 4 · Mod
    07:0219:14
  • Wed, Sep 23Wed
    +14°/+11°
    feels +12°0.2 mm · 29%25 km/hUV 3 · Mod
    07:0419:12
  • Thu, Sep 24Thu
    +13°/+9°
    feels +9°0 mm · 24%25 km/hUV 3 · Mod
    07:0519:10
  • Fri, Sep 25Fri
    +14°/+7°
    feels +11°0 mm · 29%14 km/hUV 3 · Low
    07:0719:08

Weather Insight

Plymouth's 15-day outlook ranges from a low of 7°C to a high of 20°C, with an average daytime high near 17°C. Air quality is currently good (AQI 26), with no notable outdoor health concerns.

Today vs Normal

20°C+3° above normal

The long-term average high for today is 17°C.

27 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: 20°C20°2026-08-30: 20°C20°2026-08-31: 19°C19°2026-09-01: 20°C20°2026-09-02: 20°C20°2026-09-03: 22°C22°2026-09-04: 19°C19°2026-09-05: 20°C20°2026-09-06: 23°C23°2026-09-07: 19°C19°2026-09-08: 17°C17°

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 Plymouth

Over the next 15 days, Plymouth is forecast to see temperatures ranging from 7°C to 20°C, averaging a daily high of 17°C. The extended outlook indicates occasional showers on 8 days, with 13.4 mm total accumulation. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.