Harriston Weather Today — Ontario, Canada
Current temperature, rain chance, humidity, wind and air quality in Harriston, plus an hourly and 3-day forecast. Updated through the day.
12:42
Fri, 18 Sep 2026
📍 Ontario, Canada
Harriston??
17
°C
Sunny
Feels 13°C · 62°F
💧 52% Humidity
💨 ↑ 16.9 km/h NNE
👁 10 km Visibility
🌧 0 mm Precip
☁ 5% Cloud
☀️ UV Moderate
🌿 AQI Good
☀️ UV Index
4.8
Moderate
🔵 Pressure
1025
hPa · 30.26 in
💨 Wind
16.9
km/h · Gust 19.1 km/h
↑ NNE
💧 Humidity
52%
Dew point 7°C
👁 Visibility
10
km · 6 miles
🌡 Heat Index
16.9°
Wind chill 16.9°C
🌿 Air Quality
Good
US EPA Index: 1
🌅
Sunrise
07:06 AM
🌇
Sunset
07:29 PM
📅 3-Day Forecast
Friday
18 Sep 2026
Overcast
18°
/
10°
💧68%
🌧0mm
💨18
☀️UV 5.5
Saturday
19 Sep 2026
Overcast
18°
/
9°
💧60%
🌧0mm
💨22
☀️UV 5.7
Sunday
20 Sep 2026
Overcast
18°
/
12°
💧59%
🌧0.16mm
💨16
☀️UV 3.1
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