Local Forecast

Ontario, WI Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Ontario, WI.

No Active Alerts

Hour-by-Hour  Current Observation

Monday 4:55 AM CDTMonday 4:55 AM

°F °C
Regional Observations →
63°F

Mostly Cloudy

  • 78° / 66° High / Low
  • 63° Feels Like
  • 0% Chance of Rain

Wind

0 mph

N

UV Index

0

None

Humidity

89%

Dew 59°F

Sun

5:20 AM · 8:41 PM

Rise · Set

Source: SPARTA/MCCOY AAF (KCMY). Slider scrubs the next 12 hours.

5-Day Outlook

Through Friday

Local Radar →

Today

78° 66°

Thunderstorms

Overnight: Thunderstorms Likely

Detailed forecast

Today

A chance of showers and thunderstorms before 7am, then showers and thunderstorms. Cloudy, with a high near 78. Southeast wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Night

Showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 9pm, then patchy fog and a chance of showers and thunderstorms between 9pm and 10pm, then patchy fog and scattered showers and thunderstorms between 10pm and midnight, then areas of fog and a slight chance of showers and thunderstorms. Mostly cloudy. Low around 65, with temperatures rising to around 67 overnight. East wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

Tuesday

89° 71°

Mostly Cloudy

Overnight: Thunderstorms Likely

Detailed forecast

Tuesday

Areas of fog before 8am. Partly sunny, with a high near 88. North wind around 2 mph. New rainfall amounts less than a tenth of an inch possible.

Night

Isolated rain showers between 7pm and 10pm, then a slight chance of showers and thunderstorms between 10pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind 2 to 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Wednesday

91° 64°

Thunderstorms Likely

Overnight: Scattered Thunderstorms

Detailed forecast

Wednesday

A chance of showers and thunderstorms. Mostly sunny, with a high near 90. South wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Night

Showers and thunderstorms. Mostly cloudy, with a low around 63. Southwest wind 3 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

Thursday

82° 57°

Chance of Thunderstorms

Overnight: Mostly Clear

Detailed forecast

Thursday

Scattered showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 83. Southwest wind 3 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

Night

A chance of showers and thunderstorms. Mostly clear, with a low around 58. West wind 2 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

Friday

82° 59°

Sunny

Overnight: Chance of Scattered Thunderstorms

Detailed forecast

Friday

A slight chance of rain showers before 7am. Sunny, with a high near 84. West wind 5 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

Night

A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 59. Southwest wind 2 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

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