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Ontario, OR Weather Forecast for 5-Days

Updated: Fri Apr 10th 2026 10:45 PM MDT

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Ontario, OR Weather – 4-10 – Scattered Showers
73° / 49°
Scattered Showers
Highs will reach 73°F with lows near 49°F in Ontario, where scattered showers are. The chance of rain is 87% with an estimated 0.15in. Wind will be moderate, blowing around 15mph on average and gusts of 9.4mph at 11 PM. Humidity levels should be comfortable, sitting around 51% on average, the maximum being 87% at 11 PM and 87% being its lowest at 11 PM. Barometric pressure is its highest of 29.72inHg at 11 PM, a lowest point of 29.72inHg at 11 PM with an avg 29.72inHg.
Ontario, OR Weather – 4-11 – Scattered Showers
62° / 49°

Weather Tomorrow

Scattered Showers
Ontario could see passing showers with daytime highs of 62°F and nighttime lows near 49°F. The chance of rain is 89% with an estimated 0.02in. Wind will be moderate, blowing around 14mph on average and gusts of 18.8mph at 1 AM. The humidity will be on the higher side, averaging about 80%, the maximum being 96% at 6 AM and 57% being its lowest at 11 PM. Barometric pressure is its highest of 29.78inHg at 7 AM, a lowest point of 29.62inHg at 11 PM with an avg 29.7inHg.
Ontario, OR Weather – 4-12 – Heavy Rain
55° / 44°
Heavy Rain
In Ontario, rain is likely with a high near 55°F and a low around 44°F. The chance of rain is 89% with an estimated 1.85in. Wind will be moderate, blowing around 17mph on average and gusts of 21.7mph at 4 PM. High humidity with average of 85% is anticipated, the maximum being 98% at 5 AM and 69% being its lowest at 2 PM. Barometric pressure is its highest of 29.79inHg at 10 PM, a lowest point of 29.59inHg at 2 PM with an avg 29.64inHg.
Ontario, OR Weather – 4-13 – Overcast
56° / 43°
Overcast
Ontario may see cloud-filled skies, with daytime highs of 56°F and overnight lows near 43°F. Wind will be moderate, blowing around 15mph on average and gusts of 18.8mph at 3 AM. The humidity will be on the higher side, averaging about 72%, the maximum being 89% at 5 AM and 50% being its lowest at 5 PM. Barometric pressure is its highest of 30.05inHg at 11 AM, a lowest point of 29.82inHg at 11 PM with an avg 29.97inHg.
Ontario, OR Weather – 4-14 – Partly Cloudy
60° / 38°
Partly Cloudy
In Ontario, skies will be cloudy with highs near 60°F and lows around 38°F. Winds will be strong at speeds peaking at 23mph and gusts of 30.4mph at 10 PM. Humidity levels should be comfortable, sitting around 51% on average, the maximum being 70% at 6 AM and 29% being its lowest at 6 PM. Barometric pressure is its highest of 30.06inHg at 9 AM, a lowest point of 29.76inHg at 8 PM with an avg 29.94inHg.
Ontario, OR Weather – 4-15 – Scattered Showers
54° / 41°
Scattered Showers
Daytime highs will reach 54°F with lows dropping to 41°F in Ontario, where showers likely at times. The chance of rain is 88% with an estimated 0.01in. Wind will be moderate, blowing around 19mph on average and gusts of 24.6mph at 9 PM. Humidity levels should be comfortable, sitting around 51% on average, the maximum being 66% at 7 AM and 39% being its lowest at 6 PM. Barometric pressure is its highest of 29.97inHg at 11 PM, a lowest point of 29.74inHg at 12 PM with an avg 29.82inHg.

Currently

Light Rain 58°F
29.76 inHg.
Barometer
70%
Humidity
NNE 4 mph
Wind
Light Rain

5 Day Forecast Nearby

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