15-Day Weather Forecast - Laval

15-day weather forecast for Laval: temperatures from 5°C (41°F) to 23°C (73°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 +17°C

15-Day Temperature Trend

17°9°TodaySep22°10°Tmrw23°17°Sun18°10°Mon19°9°Tue23°17°Wed18°10°Thu23°13°Fri21°11°Sat15°8°Sun17°10°Mon13°10°Tue13°10°Wed18°8°Thu8°5°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +17°/+9°
    feels +15°17 km/hUV 6 · Mod
    06:2819:13
  • Sat, Sep 12Tomorrow
    +22°/+10°
    feels +22°0 mm · 11%13 km/hUV 6 · Mod
    06:2919:11
  • Sun, Sep 13Sun
    +23°/+17°
    feels +24°3.9 mm · 63%21 km/hUV 5 · Mod
    06:3019:09
  • Mon, Sep 14Mon
    +18°/+10°
    feels +15°2.5 mm · 35%16 km/hUV 5 · Mod
    06:3219:07
  • Tue, Sep 15Tue
    +19°/+9°
    feels +17°0 mm · 20%12 km/hUV 5 · Mod
    06:3319:05
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  • Wed, Sep 16Wed
    +23°/+17°
    feels +23°0 mm · 25%10 km/hUV 4 · Mod
    06:3419:03
  • Thu, Sep 17Thu
    +18°/+10°
    feels +18°6.6 mm · 36%21 km/hUV 2 · Low
    06:3519:01
  • Fri, Sep 18Fri
    +23°/+13°
    feels +24°15.0 mm · 28%15 km/hUV 4 · Mod
    06:3618:59
  • Sat, Sep 19Sat
    +21°/+11°
    feels +22°3.9 mm · 14%28 km/hUV 5 · Mod
    06:3818:58
  • Sun, Sep 20Sun
    +15°/+8°
    feels +13°0 mm · 14%12 km/hUV 5 · Mod
    06:3918:56
  • Mon, Sep 21Mon
    +17°/+10°
    feels +14°0 mm · 10%12 km/hUV 4 · Mod
    06:4018:54
  • Tue, Sep 22Tue
    +13°/+10°
    feels +11°6.9 mm · 9%14 km/hUV 1 · Low
    06:4118:52
  • Wed, Sep 23Wed
    +13°/+10°
    feels +13°6.9 mm · 13%9 km/hUV 1 · Low
    06:4318:50
  • Thu, Sep 24Thu
    +18°/+8°
    feels +17°0.3 mm · 11%19 km/hUV 3 · Low
    06:4418:48
  • Fri, Sep 25Fri
    +8°/+5°
    feels +4°2.7 mm · 13%17 km/hUV 2 · Low
    06:4518:46

Weather Insight

Laval's 15-day outlook ranges from a low of 5°C to a high of 23°C, with an average daytime high near 18°C. That's 5° below the long-term average high of 23°C for this time of year. It continues a recent pattern — 6 of the last 28 days with published data have run cooler than normal. Air quality is currently Moderate (AQI 53), driven mainly by PM2.5 at 9.1 μg/m³.

Today vs Normal

17°C-6° below normal

The long-term average high for today is 23°C.

6 of the last 28 days with published data ran above normal.

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

2026-08-28: 22°C22°2026-08-29: 23°C23°2026-08-30: 23°C23°2026-08-31: 24°C24°2026-09-01: 22°C22°2026-09-02: 25°C25°2026-09-03: 26°C26°2026-09-04: 24°C24°2026-09-05: 21°C21°2026-09-06: 23°C23°2026-09-07: 25°C25°2026-09-08: 22°C22°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Extended Outlook for Laval

Over the next 15 days, Laval is forecast to see temperatures ranging from 5°C to 24°C, averaging a daily high of 18°C. The extended outlook indicates significant rainfall totalling 48.7 mm spread across 9 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.