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Climate & Weather Averages in Ontario, California, USA

Currently: 21 °C. Sunny. (Weather station: Ontario International Airport, USA). See more current weather

Annual Weather Averages in Ontario

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Ontario

High Temp: 35 °C

Low Temp: 6 °C

Mean Temp: 19 °C

Precipitation: 18.8 mm

Humidity: 54%

Dew Point: 8 °C

Wind: 14 km/h

Pressure: 1014 mbar

Visibility: 14 km

一月 Climate & Weather Averages in Ontario

High Temp: 20 °C

Low Temp: 7 °C

Mean Temp: 13 °C

Precipitation: 45.5 mm

Humidity: 54%

Dew Point: 3 °C

Wind: 10 km/h

Pressure: 1019 mbar

Visibility: 15 km

二月 Climate & Weather Averages in Ontario

High Temp: 20 °C

Low Temp: 8 °C

Mean Temp: 14 °C

Precipitation: 54.3 mm

Humidity: 59%

Dew Point: 5 °C

Wind: 11 km/h

Pressure: 1017 mbar

Visibility: 15 km

三月 Climate & Weather Averages in Ontario

High Temp: 22 °C

Low Temp: 9 °C

Mean Temp: 16 °C

Precipitation: 27.0 mm

Humidity: 59%

Dew Point: 6 °C

Wind: 14 km/h

Pressure: 1016 mbar

Visibility: 14 km

四月 Climate & Weather Averages in Ontario

High Temp: 24 °C

Low Temp: 11 °C

Mean Temp: 17 °C

Precipitation: 16.9 mm

Humidity: 56%

Dew Point: 7 °C

Wind: 17 km/h

Pressure: 1015 mbar

Visibility: 15 km

五月 Climate & Weather Averages in Ontario

High Temp: 26 °C

Low Temp: 13 °C

Mean Temp: 20 °C

Precipitation: 6.1 mm

Humidity: 59%

Dew Point: 11 °C

Wind: 19 km/h

Pressure: 1013 mbar

Visibility: 13 km

六月 Climate & Weather Averages in Ontario

High Temp: 30 °C

Low Temp: 15 °C

Mean Temp: 23 °C

Precipitation: 0.6 mm

Humidity: 57%

Dew Point: 13 °C

Wind: 19 km/h

Pressure: 1011 mbar

Visibility: 13 km

七月 Climate & Weather Averages in Ontario

High Temp: 34 °C

Low Temp: 18 °C

Mean Temp: 26 °C

Precipitation: 1.7 mm

Humidity: 52%

Dew Point: 14 °C

Wind: 19 km/h

Pressure: 1012 mbar

Visibility: 13 km

八月 Climate & Weather Averages in Ontario

High Temp: 35 °C

Low Temp: 18 °C

Mean Temp: 27 °C

Precipitation: 0.6 mm

Humidity: 49%

Dew Point: 14 °C

Wind: 17 km/h

Pressure: 1011 mbar

Visibility: 14 km

九月 Climate & Weather Averages in Ontario

High Temp: 33 °C

Low Temp: 17 °C

Mean Temp: 25 °C

Precipitation: 2.5 mm

Humidity: 49%

Dew Point: 13 °C

Wind: 15 km/h

Pressure: 1011 mbar

Visibility: 14 km

十月 Climate & Weather Averages in Ontario

High Temp: 28 °C

Low Temp: 13 °C

Mean Temp: 21 °C

Precipitation: 10.1 mm

Humidity: 52%

Dew Point: 9 °C

Wind: 13 km/h

Pressure: 1013 mbar

Visibility: 13 km

十一月 Climate & Weather Averages in Ontario

High Temp: 23 °C

Low Temp: 9 °C

Mean Temp: 16 °C

Precipitation: 17.4 mm

Humidity: 50%

Dew Point: 5 °C

Wind: 10 km/h

Pressure: 1017 mbar

Visibility: 14 km

十二月 Climate & Weather Averages in Ontario

High Temp: 19 °C

Low Temp: 6 °C

Mean Temp: 13 °C

Precipitation: 42.6 mm

Humidity: 53%

Dew Point: 2 °C

Wind: 9 km/h

Pressure: 1018 mbar

Visibility: 16 km

Quick Climate Info

Hottest Month八月 (27 °C avg)
Coldest Month十二月 (13 °C avg)
Wettest Month二月 (54.3 mm avg)
Windiest Month五月 (19 km/h avg)
Annual precip.225.3 mm (per year)

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