10-day forecast for Ontario, WI: 17° to 57°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
54°
Best day: Wednesday, November 18
51° · 1.15 in
Worst day: Sunday, November 22
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1547° / 24°0
Morning30°feels 30°
Afternoon47°feels 46°
Evening30°feels 25°
Overnight27°feels 27°
47 °
Ontario, Sunday, 15 November
Mostly clear. High 47°, low 24°.
Pressure30.45 inHg
Wind2.9 mph SW
Humidity60%
Visibility6.2 mi
Dew point29°
Mon, 1649° / 26°0
Morning32°feels 24°
Afternoon49°feels 45°
Evening40°feels 33°
Overnight27°feels 20°
49 °
Ontario, Monday, 16 November
Overcast. High 49°, low 26°.
Pressure30.42 inHg
Wind10.4 mph SW
Humidity58%
Visibility6.2 mi
Dew point31°
Tue, 1753° / 35°0
Morning37°feels 30°
Afternoon53°feels 50°
Evening44°feels 38°
Overnight38°feels 31°
53 °
Ontario, Tuesday, 17 November
Overcast. High 53°, low 35°.
Pressure30.36 inHg
Wind11.2 mph S
Humidity50%
Visibility6.2 mi
Dew point32°
Wed, 1854° / 40°0
Morning43°feels 37°
Afternoon53°feels 51°
Evening50°feels 48°
Overnight42°feels 35°
54 °
Ontario, Wednesday, 18 November
Overcast. High 54°, low 40°.
Pressure30.15 inHg
Wind13.9 mph S
Humidity58%
Visibility6.2 mi
Dew point37°
Thu, 1952° / 41°0.02
Morning50°feels 46°
Afternoon51°feels 49°
Evening44°feels 40°
Overnight43°feels 38°
52 °
Ontario, Thursday, 19 November
Light rain. High 52°, low 41°.
Pressure30.18 inHg
Wind13.3 mph S
Humidity66%
Visibility—
Dew point41°
Fri, 2051° / 33°0.14
Morning37°feels 35°
Afternoon46°feels 42°
Evening48°feels 44°
Overnight47°feels 46°
51 °
Ontario, Friday, 20 November
Light rain. High 51°, low 33°.
Pressure30.24 inHg
Wind8.6 mph S
Humidity66%
Visibility—
Dew point33°
Sat, 2157° / 51°0.56
Morning54°feels 53°
Afternoon56°feels 55°
Evening52°feels 51°
Overnight51°feels 51°
57 °
Ontario, Saturday, 21 November
Rain. High 57°, low 51°.
Pressure29.80 inHg
Wind14.2 mph S
Humidity72%
Visibility—
Dew point47°
Sun, 2251° / 25°1.15
Morning33°feels 21°
Afternoon32°feels 19°
Evening27°feels 14°
Overnight27°feels 14°
51 °
Ontario, Sunday, 22 November
Snow. High 51°, low 25°.
Pressure30.00 inHg
Wind24.6 mph N
Humidity96%
Visibility—
Dew point32°
Mon, 2328° / 17°0
Morning23°feels 13°
Afternoon26°feels 18°
Evening18°feels 14°
Overnight18°feels 16°
28 °
Ontario, Monday, 23 November
Partly cloudy. High 28°, low 17°.
Pressure30.56 inHg
Wind14 mph N
Humidity80%
Visibility—
Dew point21°
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.