National Weather Service United States Department of Commerce

Active pattern for the Pacific Northwest this week while a coastal low takes aim on the Northeast later this week

Thunderstorms with heavy rainfall is forecast to bring 5 to 7 inches of rainfall, with localized heavier amounts, to the Pacific Northwest throughout the week. Across the higher mountain elevations, measurable snow is likely. The Northeast will also be the focus of showers and thunderstorms beginning mid-week as a coastal low meanders of the Mid-Atlantic coast.
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Current Conditions

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Ontario CA

7 Day Forecast

For More Weather Information:

San Diego, CA Local Forecast Office

Tonight

Patchy Fog

Patchy
Fog

Low: 59 °F

Tuesday

Patchy Fog

Patchy
Fog

High: 78 °F

Tuesday
Night

Mostly Clear

Mostly
Clear

Low: 58 °F

Wednesday

Sunny

Sunny

High: 84 °F

Wednesday
Night

Mostly Clear

Mostly
Clear

Low: 58 °F

Thursday

Sunny

Sunny

High: 87 °F

Thursday
Night

Mostly Clear

Mostly
Clear

Low: 61 °F

Friday

Sunny

Sunny

High: 86 °F

Friday
Night

Mostly Clear

Mostly
Clear

Low: 60 °F

Detailed Forecast

  • Tonight Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 59. West wind 5 to 10 mph becoming light and variable in the evening.
  • Tuesday Patchy fog before 11am. Otherwise, sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
  • Tuesday Night Mostly clear, with a low around 58. West wind 5 to 10 mph becoming light and variable in the evening.
  • Wednesday Sunny, with a high near 84. Calm wind becoming southwest around 5 mph.
  • Wednesday Night Mostly clear, with a low around 58. West wind around 5 mph becoming calm in the evening.
  • Thursday Sunny, with a high near 87.
  • Thursday Night Mostly clear, with a low around 61.
  • Friday Sunny, with a high near 86.
  • Friday Night Mostly clear, with a low around 60.
  • Saturday Sunny, with a high near 80.
  • Saturday Night Patchy fog after 11pm. Otherwise, mostly clear, with a low around 59.
  • Sunday Patchy fog before 11am. Otherwise, sunny, with a high near 77.
  • Sunday Night Mostly clear, with a low around 57.
  • Monday Sunny, with a high near 80.