10-day forecast for Ontario, PA: 51° to 84°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
84°
Best day: Sunday, August 9
84° · 1.79 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1083° / 67°0.85
Morning70°feels 72°
Afternoon82°feels 85°
Evening79°feels 79°
Overnight69°feels 69°
83 °
Ontario, Monday, 10 August
Heavy rain. High 83°, low 67°.
Pressure30.00 inHg
Wind9.7 mph SW
Humidity81%
Visibility6.2 mi
Dew point69°
Tue, 1184° / 65°1.79
Morning66°feels 67°
Afternoon79°feels 79°
Evening74°feels 75°
Overnight65°feels 66°
84 °
Ontario, Tuesday, 11 August
Heavy rain. High 84°, low 65°.
Pressure30.00 inHg
Wind7.6 mph SW
Humidity84%
Visibility6.2 mi
Dew point67°
Wed, 1278° / 64°0.17
Morning67°feels 68°
Afternoon72°feels 73°
Evening73°feels 74°
Overnight65°feels 66°
78 °
Ontario, Wednesday, 12 August
Light rain. High 78°, low 64°.
Pressure29.83 inHg
Wind7.6 mph SW
Humidity94%
Visibility6.2 mi
Dew point69°
Thu, 1377° / 59°0.05
Morning68°feels 68°
Afternoon75°feels 75°
Evening64°feels 63°
Overnight63°feels 63°
77 °
Ontario, Thursday, 13 August
Light rain. High 77°, low 59°.
Pressure29.91 inHg
Wind12.2 mph NW
Humidity48%
Visibility—
Dew point54°
Fri, 1473° / 53°0
Morning61°feels 60°
Afternoon71°feels 70°
Evening64°feels 63°
Overnight57°feels 56°
73 °
Ontario, Friday, 14 August
Overcast. High 73°, low 53°.
Pressure30.09 inHg
Wind7 mph N
Humidity52%
Visibility—
Dew point51°
Sat, 1572° / 53°0
Morning60°feels 59°
Afternoon69°feels 68°
Evening61°feels 60°
Overnight56°feels 55°
72 °
Ontario, Saturday, 15 August
Overcast. High 72°, low 53°.
Pressure30.24 inHg
Wind6.6 mph N
Humidity45%
Visibility—
Dew point47°
Sun, 1666° / 51°0.01
Morning57°feels 56°
Afternoon60°feels 59°
Evening60°feels 59°
Overnight56°feels 55°
66 °
Ontario, Sunday, 16 August
Light rain. High 66°, low 51°.
Pressure30.18 inHg
Wind4 mph N
Humidity84%
Visibility—
Dew point54°
Mon, 1777° / 53°0
Morning62°feels 61°
Afternoon74°feels 73°
Evening65°feels 65°
Overnight61°feels 60°
77 °
Ontario, Monday, 17 August
Partly cloudy. High 77°, low 53°.
Pressure30.03 inHg
Wind4.7 mph NW
Humidity49%
Visibility—
Dew point52°
Tue, 1880° / 57°0
Morning66°feels 66°
Afternoon77°feels 77°
Evening68°feels 68°
Overnight64°feels 63°
80 °
Ontario, Tuesday, 18 August
Clear. High 80°, low 57°.
Pressure30.03 inHg
Wind4.3 mph NW
Humidity48%
Visibility—
Dew point55°
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, PA 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.