National Weather Service forecast
Ontario, Wisconsin Weather
Ontario 7-Day Forecast
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Overnight54°FChance Rain Showers51% chance of precipitation
A chance of rain showers. Mostly cloudy. Low around 54, with temperatures rising to around 56 overnight. South wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
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Wednesday61°FRain Showers77% chance of precipitation
Rain showers. Mostly cloudy. High near 61, with temperatures falling to around 54 in the afternoon. South wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
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Wednesday Night43°FRain Showers77% chance of precipitation
Rain showers. Cloudy. Low around 43, with temperatures rising to around 45 overnight. Southwest wind 6 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
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Thursday55°FRain Showers78% chance of precipitation
Rain showers. Cloudy, with a high near 55. Northwest wind 6 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
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Thursday Night33°FMostly Cloudy6% chance of precipitation
Mostly cloudy, with a low around 33. North wind 3 to 10 mph, with gusts as high as 24 mph.
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Friday49°FPartly Sunny
Partly sunny, with a high near 49. North wind 2 to 6 mph.
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Friday Night26°FMostly Clear
Mostly clear, with a low around 26. North wind around 1 mph.
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Saturday52°FSunny
Sunny, with a high near 52. West wind 0 to 3 mph.
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Saturday Night31°FMostly Clear4% chance of precipitation
Mostly clear, with a low around 31. West wind around 2 mph.
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Sunday57°FSunny6% chance of precipitation
Sunny, with a high near 57. West wind 2 to 9 mph.
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Sunday Night32°FMostly Clear
Mostly clear, with a low around 32. West wind around 2 mph.
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Monday62°FMostly Sunny
Mostly sunny, with a high near 62. Southwest wind 0 to 10 mph, with gusts as high as 20 mph.
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Monday Night37°FPartly Cloudy
Partly cloudy, with a low around 37. West wind 1 to 5 mph.
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Tuesday61°FSunny
Sunny, with a high near 61. Northwest wind 1 to 5 mph.
Issued by the National Weather Service (ARX office), updated .
Ontario Hourly Forecast
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Ontario Weather Radar
Open the full radar for OntarioAbout Ontario
- Population (2020 Census)
- 534
- Coordinates
- 43.722, -90.593
- Elevation
- 896 ft
- NWS forecast office
- ARX
- Time zone
- America/Chicago
- Sunrise today
- 6:42 AM CST
- Sunset today
- 4:49 PM CST
- Daylight today
- 10 h 8 min
Ontario Weather Questions
What is the weather forecast for Ontario, Wisconsin?
Overnight: A chance of rain showers. Mostly cloudy. Low around 54, with temperatures rising to around 56 overnight. South wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. Wednesday: Rain showers. Mostly cloudy. High near 61, with temperatures falling to around 54 in the afternoon. South wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
Will it rain or snow in Ontario this week?
The best chance of precipitation is Thursday at 78%. Periods with a 30% chance or more: Overnight (51%), Wednesday (77%), Wednesday Night (77%), Thursday (78%).
How warm and how cold will it get in Ontario this week?
The warmest day is Monday, with a high near 62°F. The coldest night is Friday Night, with a low near 26°F.
What time are sunrise and sunset in Ontario today?
Sunrise is at 6:42 AM CST and sunset is at 4:49 PM CST, for 10 h 8 min of daylight.
Weather near Ontario
- Wilton 7 mi
- Norwalk 8 mi
- Cashton 10 mi
- La Farge 10 mi
- Melvina 11 mi
- Kendall 12 mi
- Hillsboro 14 mi
- Westby 14 mi