10-day forecast for Ontario, WI: 23° to 56°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
54°
Best day: Wednesday, November 18
56° · 0.6 in
Worst day: Saturday, November 21
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1546° / 25°0
Morning30°feels 30°
Afternoon46°feels 46°
Evening32°feels 28°
Overnight26°feels 26°
46 °
Ontario, Sunday, 15 November
Mostly clear. High 46°, low 25°.
Pressure30.45 inHg
Wind2.8 mph SW
Humidity60%
Visibility6.2 mi
Dew point26°
Mon, 1649° / 31°0
Morning33°feels 26°
Afternoon49°feels 45°
Evening39°feels 32°
Overnight31°feels 25°
49 °
Ontario, Monday, 16 November
Overcast. High 49°, low 31°.
Pressure30.45 inHg
Wind9.7 mph SW
Humidity59%
Visibility6.2 mi
Dew point31°
Tue, 1753° / 35°0
Morning37°feels 30°
Afternoon53°feels 51°
Evening45°feels 39°
Overnight37°feels 30°
53 °
Ontario, Tuesday, 17 November
Partly cloudy. High 53°, low 35°.
Pressure30.39 inHg
Wind11 mph S
Humidity53%
Visibility6.2 mi
Dew point34°
Wed, 1854° / 40°0
Morning43°feels 37°
Afternoon53°feels 50°
Evening51°feels 48°
Overnight42°feels 36°
54 °
Ontario, Wednesday, 18 November
Overcast. High 54°, low 40°.
Pressure30.18 inHg
Wind14.5 mph S
Humidity55%
Visibility—
Dew point35°
Thu, 1955° / 49°0.23
Morning51°feels 47°
Afternoon54°feels 53°
Evening53°feels 52°
Overnight50°feels 47°
55 °
Ontario, Thursday, 19 November
Rain. High 55°, low 49°.
Pressure30.06 inHg
Wind14 mph S
Humidity86%
Visibility—
Dew point49°
Fri, 2049° / 38°0.12
Morning41°feels 37°
Afternoon48°feels 43°
Evening47°feels 41°
Overnight47°feels 42°
49 °
Ontario, Friday, 20 November
Light rain. High 49°, low 38°.
Pressure30.15 inHg
Wind13.8 mph SE
Humidity55%
Visibility—
Dew point32°
Sat, 2156° / 44°0.6
Morning55°feels 55°
Afternoon56°feels 55°
Evening54°feels 52°
Overnight46°feels 39°
56 °
Ontario, Saturday, 21 November
Rain. High 56°, low 44°.
Pressure29.68 inHg
Wind21.3 mph W
Humidity83%
Visibility—
Dew point51°
Sun, 2238° / 29°0.06
Morning36°feels 24°
Afternoon35°feels 25°
Evening32°feels 22°
Overnight30°feels 21°
38 °
Ontario, Sunday, 22 November
Light rain. High 38°, low 29°.
Pressure30.18 inHg
Wind26.3 mph NW
Humidity72%
Visibility—
Dew point28°
Mon, 2336° / 23°0
Morning27°feels 20°
Afternoon34°feels 28°
Evening27°feels 23°
Overnight25°feels 21°
36 °
Ontario, Monday, 23 November
Clear. High 36°, low 23°.
Pressure30.39 inHg
Wind7.7 mph NW
Humidity36%
Visibility—
Dew point10°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Ontario, WI around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.