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Weather in Alliston, Canada 🇨🇦

Current Weather in Alliston

Patchy rain nearby
17°C
Feels like 13°C. Patchy rain nearby.
🌬️ 26 km/h NW
💧 85% Humidity
🧭 1010 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 1.2
🌡️ Dew Point: 14°C
🌅 Sunrise: 06:33 AM
🌇 Sunset: 08:10 PM
Map Overlays:

In Alliston right now it is 17°C and patchy rain nearby, feeling like 13°C. The air is at 85% humidity and winds are about 26 km/h, and the UV index is 1 (low). Across the coming days, Alliston should see roughly 12°C to 24°C.

Hourly Forecast for Alliston

17:00
Patchy rain nearby
16°
36%
18:00
Light drizzle
16°
48%
19:00
Light drizzle
16°
69%
20:00
Light rain
15°
81%
21:00
Moderate rain
16°
84%
22:00
Moderate rain
15°
84%
23:00
Moderate rain
15°
87%
00:00
Moderate rain
15°
86%
01:00
Cloudy
14°
25%
02:00
Mist
14°
20%
03:00
Mist
15°
27%
04:00
Overcast
14°
31%
05:00
Overcast
14°
30%
06:00
Patchy rain nearby
15°
30%
07:00
Patchy rain nearby
13°
29%
08:00
Patchy rain nearby
13°
26%
09:00
Patchy rain nearby
14°
28%
10:00
Patchy rain nearby
15°
31%
11:00
Patchy rain nearby
15°
22%
12:00
Patchy rain nearby
17°
17%
13:00
Patchy rain nearby
18°
13%
14:00
Partly Cloudy
18°
7%
15:00
Patchy rain nearby
19°
12%
16:00
Patchy rain nearby
19°
16%

14-Day Forecast for Alliston

Mon, Aug 24
Patchy rain nearby Patchy rain nearby
18° / 12°
Tue, Aug 25
Patchy rain nearby Patchy rain nearby
19° / 13°
Wed, Aug 26
Overcast Overcast
24° / 14°
Thu, Aug 27
Patchy rain nearby Patchy rain nearby
22° / 16°
Fri, Aug 28
Sunny Sunny
19° / 12°
Sat, Aug 29
Sunny Sunny
20° / 10°
Sun, Aug 30
Overcast Overcast
21° / 12°
Mon, Aug 31
Overcast Overcast
22° / 15°
Tue, Sep 01
Overcast Overcast
22° / 14°
Wed, Sep 02
Overcast Overcast
19° / 15°
Thu, Sep 03
Mist Mist
21° / 15°
Fri, Sep 04
Overcast Overcast
20° / 13°
Sat, Sep 05
Light rain shower Light rain shower
16° / 14°
Sun, Sep 06
Patchy rain nearby Patchy rain nearby
23° / 14°

Additional Forecasts for Alliston

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 114.0 μg/m³
O₃ (Ozone) 70.0 μg/m³
NO₂ (Nitrogen Dioxide) 1.1 μg/m³
SO₂ (Sulphur Dioxide) 0.4 μg/m³
PM2.5 (Fine particles) 0.3 μg/m³
PM10 (Coarse particles) 0.3 μg/m³

Historical Weather

Weather Forecasts for Other Cities in Canada

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Best Time to Be Outside in Alliston Tomorrow

There is no good daylight window left in Alliston today. Tomorrow, the most comfortable window looks like 08:00 to 11:00, when it is around 14°C. The next likely rain is around 19:00.

Frequently Asked Questions about Weather in Alliston

What is the temperature in Alliston right now?

Alliston is sitting at 17°C (63°F) right now, patchy rain nearby (feels like 13°C).

What's the weather like in Alliston right now?

Conditions in Alliston right now: Patchy rain nearby, humidity 85%, wind 26 km/h NW.

What is today's forecast for Alliston?

Today in Alliston: high 18°C, low 12°C, patchy rain nearby. Chance of rain: 90%.

What is the 7-day weather forecast for Alliston?

Daily highs and lows for Alliston:

  • 2026-08-24: 18°C / 12°C
  • 2026-08-25: 19°C / 13°C
  • 2026-08-26: 24°C / 14°C
  • 2026-08-27: 22°C / 16°C
  • 2026-08-28: 19°C / 12°C
  • 2026-08-29: 20°C / 10°C
  • 2026-08-30: 21°C / 12°C
Is it going to rain in Alliston today?

There is a 90% chance of rain in Alliston today. Total expected precipitation: 12.97 mm.

What is the wind speed in Alliston right now?

Wind in Alliston is currently 26 km/h (16 mph) from the NW.

What is the UV index in Alliston right now?

The UV index in Alliston is currently 1.2 (low). Sun protection is recommended when the index is 3 or higher.

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