10-day forecast for Ontario, OK: 72° to 116°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.
116°
Best day: Tuesday, August 18
102° · 0.1 in
Worst day: Monday, August 17
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1099° / 79°0
Morning80°feels 80°
Afternoon97°feels 97°
Evening89°feels 89°
Overnight85°feels 86°
99 °
Ontario, Monday, 10 August
Clear. High 99°, low 79°.
Pressure29.94 inHg
Wind19.4 mph SW
Humidity41%
Visibility6.2 mi
Dew point67°
Tue, 11104° / 80°0
Morning81°feels 83°
Afternoon102°feels 105°
Evening95°feels 96°
Overnight84°feels 85°
104 °
Ontario, Tuesday, 11 August
Mostly clear. High 104°, low 80°.
Pressure29.88 inHg
Wind19.5 mph SW
Humidity37%
Visibility6.2 mi
Dew point66°
Wed, 12107° / 83°0
Morning84°feels 85°
Afternoon105°feels 106°
Evening96°feels 96°
Overnight86°feels 87°
107 °
Ontario, Wednesday, 12 August
Partly cloudy. High 107°, low 83°.
Pressure29.83 inHg
Wind17.8 mph SW
Humidity30%
Visibility6.2 mi
Dew point62°
Thu, 13107° / 83°0
Morning84°feels 85°
Afternoon103°feels 103°
Evening102°feels 101°
Overnight88°feels 87°
107 °
Ontario, Thursday, 13 August
Overcast. High 107°, low 83°.
Pressure29.77 inHg
Wind21.8 mph SW
Humidity25%
Visibility—
Dew point58°
Fri, 14109° / 83°0
Morning89°feels 89°
Afternoon104°feels 106°
Evening103°feels 103°
Overnight93°feels 91°
109 °
Ontario, Friday, 14 August
Mostly clear. High 109°, low 83°.
Pressure29.88 inHg
Wind21 mph SW
Humidity26%
Visibility—
Dew point60°
Sat, 15108° / 80°0
Morning87°feels 87°
Afternoon105°feels 105°
Evening103°feels 101°
Overnight89°feels 87°
108 °
Ontario, Saturday, 15 August
Clear. High 108°, low 80°.
Pressure30.00 inHg
Wind17 mph SW
Humidity22%
Visibility—
Dew point55°
Sun, 16112° / 80°0
Morning88°feels 88°
Afternoon107°feels 107°
Evening99°feels 99°
Overnight86°feels 89°
112 °
Ontario, Sunday, 16 August
Clear. High 112°, low 80°.
Pressure29.97 inHg
Wind17.6 mph NE
Humidity19%
Visibility—
Dew point53°
Mon, 17102° / 72°0.1
Morning79°feels 81°
Afternoon98°feels 101°
Evening97°feels 99°
Overnight80°feels 82°
102 °
Ontario, Monday, 17 August
Light rain. High 102°, low 72°.
Pressure29.97 inHg
Wind17.1 mph SE
Humidity36%
Visibility—
Dew point63°
Tue, 18116° / 81°0
Morning92°feels 90°
Afternoon112°feels 108°
Evening107°feels 103°
Overnight87°feels 87°
116 °
Ontario, Tuesday, 18 August
Clear. High 116°, low 81°.
Pressure29.77 inHg
Wind20.6 mph SW
Humidity12%
Visibility—
Dew point45°
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, OK 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.