National Weather Service United States Department of Commerce

Unseasonably cold temperatures spreading into central U.S.

A strong cold front will usher a much colder air mass into the central and eastern U.S. for the end of the work week. Temperatures will be 10 to 20 degrees below average in some areas. Rain and snow will be possible across the Great Lakes on Friday as the system crosses the area. Heavy snow is possible in the central Appalachians Friday night.
Read More...

Current Conditions

En Español

Share |

Ontario CA

7 Day Forecast

For More Weather Information:

San Diego, CA Local Forecast Office

Today

Chance Drizzle

Chance
Drizzle

High: 73 °F

Tonight

Heavy Rain Chance for Measurable Precipitation 90%

Heavy
Rain

Low: 57 °F

Saturday

Heavy Rain Chance for Measurable Precipitation 60%

Heavy
Rain

High: 64 °F

Saturday
Night

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

Low: 50 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 68 °F

Sunday
Night

Mostly Clear

Mostly
Clear

Low: 52 °F

Monday

Sunny

Sunny

High: 73 °F

Monday
Night

Mostly Clear

Mostly
Clear

Low: 53 °F

Tuesday

Sunny

Sunny

High: 77 °F

Detailed Forecast

  • Today A chance of drizzle before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 73. Light southwest wind increasing to 5 to 10 mph in the afternoon.
  • Tonight Showers, mainly after 11pm. The rain could be heavy at times. Low around 57. Southwest wind around 10 mph. Chance of precipitation is 90%.
  • Saturday Showers likely, mainly before 11am. The rain could be heavy at times. Mostly cloudy, with a high near 64. West wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
  • Saturday Night A 20 percent chance of showers before 11pm. Mostly cloudy, with a low around 50. West wind 5 to 10 mph becoming south in the evening. Winds could gust as high as 20 mph.
  • Sunday Mostly sunny, with a high near 68. Northeast wind around 5 mph.
  • Sunday Night Mostly clear, with a low around 52.
  • Monday Sunny, with a high near 73.
  • Monday Night Mostly clear, with a low around 53.
  • Tuesday Sunny, with a high near 77.
  • Tuesday Night Mostly clear, with a low around 56.
  • Wednesday Sunny, with a high near 83.
  • Wednesday Night Mostly clear, with a low around 58.
  • Thursday Sunny, with a high near 84.