10-day forecast for Ontario, OH: 53° to 85°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
85°
Best day: Sunday, August 9
85° · 1.3 in
Worst day: Monday, August 10
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1085° / 64°1.3
Morning68°feels 69°
Afternoon84°feels 90°
Evening79°feels 79°
Overnight72°feels 73°
85 °
Ontario, Monday, 10 August
Heavy rain. High 85°, low 64°.
Pressure29.97 inHg
Wind18.1 mph SW
Humidity75%
Visibility6.2 mi
Dew point70°
Tue, 1180° / 62°0.85
Morning69°feels 69°
Afternoon79°feels 79°
Evening64°feels 65°
Overnight64°feels 65°
80 °
Ontario, Tuesday, 11 August
Heavy rain. High 80°, low 62°.
Pressure29.94 inHg
Wind8.5 mph S
Humidity75%
Visibility6.2 mi
Dew point70°
Wed, 1278° / 64°0.09
Morning67°feels 68°
Afternoon76°feels 77°
Evening72°feels 73°
Overnight65°feels 66°
78 °
Ontario, Wednesday, 12 August
Light rain. High 78°, low 64°.
Pressure29.80 inHg
Wind3.6 mph NW
Humidity85%
Visibility6.2 mi
Dew point69°
Thu, 1371° / 60°0.02
Morning65°feels 65°
Afternoon70°feels 70°
Evening63°feels 63°
Overnight65°feels 66°
71 °
Ontario, Thursday, 13 August
Light rain. High 71°, low 60°.
Pressure29.97 inHg
Wind9.8 mph N
Humidity64%
Visibility—
Dew point57°
Fri, 1470° / 54°0
Morning60°feels 59°
Afternoon69°feels 68°
Evening60°feels 60°
Overnight56°feels 55°
70 °
Ontario, Friday, 14 August
Overcast. High 70°, low 54°.
Pressure30.12 inHg
Wind9.9 mph N
Humidity58%
Visibility—
Dew point53°
Sat, 1569° / 54°0
Morning60°feels 60°
Afternoon67°feels 67°
Evening59°feels 59°
Overnight55°feels 53°
69 °
Ontario, Saturday, 15 August
Overcast. High 69°, low 54°.
Pressure30.27 inHg
Wind8.3 mph NE
Humidity56%
Visibility—
Dew point51°
Sun, 1669° / 53°0.09
Morning59°feels 58°
Afternoon65°feels 64°
Evening62°feels 62°
Overnight58°feels 57°
69 °
Ontario, Sunday, 16 August
Light rain. High 69°, low 53°.
Pressure30.15 inHg
Wind7.1 mph SE
Humidity67%
Visibility—
Dew point53°
Mon, 1774° / 56°0.03
Morning65°feels 64°
Afternoon73°feels 73°
Evening66°feels 66°
Overnight62°feels 62°
74 °
Ontario, Monday, 17 August
Light rain. High 74°, low 56°.
Pressure30.06 inHg
Wind6.4 mph NW
Humidity66%
Visibility—
Dew point60°
Tue, 1877° / 60°0.01
Morning67°feels 67°
Afternoon76°feels 76°
Evening69°feels 70°
Overnight64°feels 64°
77 °
Ontario, Tuesday, 18 August
Light rain. High 77°, low 60°.
Pressure30.06 inHg
Wind5.8 mph E
Humidity61%
Visibility—
Dew point61°
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, OH 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.