Sunday
Hot
High:
100°F
Partly sunny and hot, with a high near 100.
Ontario, OR Weather - Extended Forecast
Sunday Night
Mostly cloudy
Overnight low:
70°F
Mostly cloudy, with a low around 70.
Monday
Hot
High:
99°F
Mostly sunny and hot, with a high near 99.
Monday Night
Mostly cloudy
Overnight low:
71°F
Mostly cloudy, with a low around 71.
Tuesday
Hot
High:
99°F
Tuesday Night
Partly cloudy
Overnight low:
70°F
Wednesday
Hot
High:
100°F
Wednesday Night
Mostly clear
Overnight low:
69°F
Thursday
Hot
High:
100°F