10-day forecast for Ontario, IN: 53° to 88°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
88°
Best day: Sunday, August 9
87° · 3.82 in
Worst day: Monday, August 10
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1087° / 69°3.82
Morning73°feels 74°
Afternoon86°feels 96°
Evening74°feels 75°
Overnight73°feels 74°
87 °
Ontario, Monday, 10 August
Heavy rain. High 87°, low 69°.
Pressure29.91 inHg
Wind11.8 mph SW
Humidity78%
Visibility6.2 mi
Dew point74°
Tue, 1180° / 64°1.51
Morning67°feels 68°
Afternoon76°feels 78°
Evening72°feels 74°
Overnight67°feels 68°
80 °
Ontario, Tuesday, 11 August
Heavy rain. High 80°, low 64°.
Pressure29.88 inHg
Wind15.2 mph S
Humidity74%
Visibility6.2 mi
Dew point71°
Wed, 1280° / 64°0.02
Morning68°feels 69°
Afternoon80°feels 84°
Evening73°feels 74°
Overnight68°feels 69°
80 °
Ontario, Wednesday, 12 August
Light rain. High 80°, low 64°.
Pressure29.80 inHg
Wind4 mph NW
Humidity73%
Visibility6.2 mi
Dew point68°
Thu, 1372° / 59°0
Morning62°feels 62°
Afternoon70°feels 70°
Evening62°feels 61°
Overnight62°feels 61°
72 °
Ontario, Thursday, 13 August
Overcast. High 72°, low 59°.
Pressure30.03 inHg
Wind8.7 mph NW
Humidity59%
Visibility—
Dew point55°
Fri, 1472° / 55°0
Morning60°feels 59°
Afternoon70°feels 70°
Evening66°feels 65°
Overnight58°feels 57°
72 °
Ontario, Friday, 14 August
Overcast. High 72°, low 55°.
Pressure30.18 inHg
Wind6.8 mph NE
Humidity58%
Visibility—
Dew point53°
Sat, 1573° / 55°0
Morning62°feels 61°
Afternoon71°feels 71°
Evening66°feels 66°
Overnight60°feels 60°
73 °
Ontario, Saturday, 15 August
Overcast. High 73°, low 55°.
Pressure30.27 inHg
Wind10.8 mph SE
Humidity64%
Visibility—
Dew point57°
Sun, 1673° / 53°0.17
Morning58°feels 58°
Afternoon69°feels 69°
Evening69°feels 70°
Overnight65°feels 65°
73 °
Ontario, Sunday, 16 August
Rain. High 73°, low 53°.
Pressure30.12 inHg
Wind9.6 mph E
Humidity71%
Visibility—
Dew point57°
Mon, 1777° / 64°0.01
Morning68°feels 68°
Afternoon76°feels 76°
Evening69°feels 69°
Overnight65°feels 65°
77 °
Ontario, Monday, 17 August
Light rain. High 77°, low 64°.
Pressure30.06 inHg
Wind7.4 mph NW
Humidity66%
Visibility—
Dew point63°
Tue, 1876° / 57°0
Morning65°feels 64°
Afternoon75°feels 76°
Evening70°feels 70°
Overnight65°feels 65°
76 °
Ontario, Tuesday, 18 August
Mostly clear. High 76°, low 57°.
Pressure30.06 inHg
Wind5.8 mph SE
Humidity60%
Visibility—
Dew point59°
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, IN 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.