Weather in Ontario, WI
Updated 2026-08-11 10:15 local time · ZIP codes 54651
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
75°55% rain
78°10% rain80°8% rain
82°6% rain84°4% rain86°4% rain87°3% rain86°4% rain84°6% rain82°5% rain80°5% rain
77°7% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance reaches about 55% over the next 12 hours.
It feels like 80°F with winds near 5 mph.
80°F, 5% rain chance and 6 mph wind.
Visibility is around 6 mi; gusts may reach 13 mph.
Current temperature is 75°F, wind 5 mph, rain chance up to 55%.
UV index is 2.
Ontario weather today
Patchy rain nearby and 75°F in Ontario, WI. Today's high is 87°F with a 36% rain chance. Winds are around 5 mph with gusts near 8 mph. Relative humidity is 83%, pressure is 29.85 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Ontario
Sunrise is at 06:02 AM and sunset is at 08:12 PM. Tomorrow's forecast calls for Sunny with a high near 89°F and a low near 65°F. The maximum rain chance is 57%.