15-Day Weather Forecast - Bristol

15-day weather forecast for Bristol: temperatures from 6°C (43°F) to 22°C (72°F). Average daily high 18°C (64°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°TodaySep21°14°Tmrw21°17°Sun22°17°Mon19°14°Tue17°12°Wed18°14°Thu16°12°Fri18°13°Sat16°11°Sun17°7°Mon19°13°Tue14°10°Wed13°8°Thu14°6°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°1.5 mm · 90%15 km/hUV 2 · Low
    06:3819:34
  • Sat, Sep 12Tomorrow
    +21°/+14°
    feels +20°0.4 mm · 27%21 km/hUV 3 · Low
    06:4019:31
  • Sun, Sep 13Sun
    +21°/+17°
    feels +21°6.8 mm · 82%19 km/hUV 2 · Low
    06:4119:29
  • Mon, Sep 14Mon
    +22°/+17°
    feels +22°2.6 mm · 25%21 km/hUV 4 · Mod
    06:4319:27
  • Tue, Sep 15Tue
    +19°/+14°
    feels +19°1.0 mm · 39%21 km/hUV 4 · Mod
    06:4519:24
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  • Wed, Sep 16Wed
    +17°/+12°
    feels +15°0 mm · 29%16 km/hUV 4 · Mod
    06:4619:22
  • Thu, Sep 17Thu
    +18°/+14°
    feels +16°0 mm · 44%24 km/hUV 4 · Mod
    06:4819:20
  • Fri, Sep 18Fri
    +16°/+12°
    feels +12°0.4 mm · 17%26 km/hUV 4 · Mod
    06:4919:18
  • Sat, Sep 19Sat
    +18°/+13°
    feels +16°9.2 mm · 31%19 km/hUV 4 · Mod
    06:5119:15
  • Sun, Sep 20Sun
    +16°/+11°
    feels +13°0 mm · 16%18 km/hUV 4 · Mod
    06:5319:13
  • Mon, Sep 21Mon
    +17°/+7°
    feels +15°0.4 mm · 20%18 km/hUV 4 · Mod
    06:5419:11
  • Tue, Sep 22Tue
    +19°/+13°
    feels +16°3.6 mm · 22%27 km/hUV 4 · Mod
    06:5619:08
  • Wed, Sep 23Wed
    +14°/+10°
    feels +10°0.8 mm · 25%20 km/hUV 4 · Mod
    06:5719:06
  • Thu, Sep 24Thu
    +13°/+8°
    feels +8°0 mm · 22%24 km/hUV 4 · Mod
    06:5919:04
  • Fri, Sep 25Fri
    +14°/+6°
    feels +11°0 mm · 25%12 km/hUV 1 · Low
    07:0119:01

Weather Insight

Bristol's 15-day outlook ranges from a low of 6°C to a high of 22°C, with an average daytime high near 18°C. That's 1° below the long-term average high of 19°C for this time of year. Air quality is currently good (AQI 23), with no notable outdoor health concerns.

Today vs Normal

20°C+1° above normal

The long-term average high for today is 19°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: 23°C23°2026-08-29: 22°C22°2026-08-30: 22°C22°2026-08-31: 21°C21°2026-09-01: 22°C22°2026-09-02: 20°C20°2026-09-03: 23°C23°2026-09-04: 19°C19°2026-09-05: 21°C21°2026-09-06: 26°C26°2026-09-07: 19°C19°2026-09-08: 19°C19°

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 Bristol

Over the next 15 days, Bristol is forecast to see temperatures ranging from 5°C to 22°C, averaging a daily high of 18°C. The extended outlook indicates frequent showers on 10 out of 15 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.