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Ontario, WI Weather Tomorrow

Use tomorrow's Ontario weather forecast and the next 5 day outlook to track precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the Ontario area and around Vernon county, Wisconsin.
Updated: Sun Oct 25th 2026 6:45 PM CDT
Ontario, WI Weather – 10-25 – Overcast
68° / 51°
Overcast
Cloud-filled skies are in the forecast for Ontario, with a high of 68°F and a low of 51°F. There might be light rainfall having a 16% chance. Winds will be light at 10mph and gusts of 16.8mph at 11 PM. The humidity will be on the higher side, averaging about 68%, the maximum being 73% at 7 PM and 54% being its lowest at 11 PM. Barometric pressure is its highest of 30.38inHg at 11 PM, a lowest point of 30.35inHg at 7 PM with an avg 30.36inHg.
Ontario, WI Weather – 10-26 – Overcast
57° / 45°

Weather Tomorrow

Overcast
It will be overcast in Ontario, with a high of 57°F and a low of 45°F. There's a moderate 40% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 13mph on average and gusts of 24.2mph at 9 PM. Humidity levels should be comfortable, sitting around 49% on average, the maximum being 80% at 11 PM and 36% being its lowest at 11 AM. Barometric pressure is its highest of 30.43inHg at 9 AM, a lowest point of 30.33inHg at 10 PM with an avg 30.37inHg.
Ontario, WI Weather – 10-27 – Overcast
63° / 43°
Overcast
Ontario is set for cloud-filled skies with temperatures peaking at 63°F and dipping to 43°F. Rainfall predicted to have a 53% chance with an estimated 0.02in. Wind will be moderate, blowing around 13mph on average and gusts of 28.9mph at 9 AM. The humidity will be on the higher side, averaging about 75%, the maximum being 85% at 8 PM and 60% being its lowest at 2 PM. Barometric pressure is its highest of 30.34inHg at 12 AM, a lowest point of 30.14inHg at 10 PM with an avg 30.23inHg.
Ontario, WI Weather – 10-28 – Overcast
67° / 51°
Overcast
In Ontario, skies will be overcast with highs near 67°F and lows around 51°F. Rainfall predicted to have a 59% chance with an estimated 0.04in. Wind will be moderate, blowing around 12mph on average and gusts of 28.2mph at 11 PM. The humidity will be on the higher side, averaging about 73%, the maximum being 93% at 10 PM and 52% being its lowest at 12 PM. Barometric pressure is its highest of 30.17inHg at 8 AM, a lowest point of 30.02inHg at 10 PM with an avg 30.11inHg.
Ontario, WI Weather – 10-29 – Sunny
63° / 42°
Sunny
Ontario could see sunshine with daytime highs of 63°F and nighttime lows near 42°F. Rainfall predicted to have a 66% chance with an estimated 0.15in. Wind will be moderate, blowing around 14mph on average and gusts of 32.5mph at 1 AM. The humidity will be on the higher side, averaging about 76%, the maximum being 98% at 7 AM and 40% being its lowest at 3 PM. Barometric pressure is its highest of 30.31inHg at 11 PM, a lowest point of 29.99inHg at 3 AM with an avg 30.11inHg.
Ontario, WI Weather – 10-30 – Cloudy
63° / 38°
Cloudy
It will be cloudy in Ontario, with a high of 63°F and a low of 38°F. There's a very small chance of rainfall, only about 10%. Winds will be light at 6mph and gusts of 13mph at 6 AM. The humidity will be on the higher side, averaging about 68%, the maximum being 84% at 2 AM and 45% being its lowest at 4 PM. Barometric pressure is its highest of 30.4inHg at 6 AM, a lowest point of 30.2inHg at 4 PM with an avg 30.27inHg.

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