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.
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Current Conditions

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Rancho Cucamonga CA

7 Day Forecast

For More Weather Information:

San Diego, CA Local Forecast Office

Overnight

Patchy Fog

Patchy
Fog

Low: 58 °F

Friday

Chance Drizzle

Chance
Drizzle

High: 75 °F

Friday
Night

Heavy Rain Chance for Measurable Precipitation 90%

Heavy
Rain

Low: 56 °F

Saturday

Showers Likely Chance for Measurable Precipitation 60%

Showers
Likely

High: 65 °F

Saturday
Night

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

Low: 49 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 69 °F

Sunday
Night

Mostly Clear

Mostly
Clear

Low: 51 °F

Monday

Sunny

Sunny

High: 74 °F

Monday
Night

Mostly Clear

Mostly
Clear

Low: 54 °F

Detailed Forecast

  • Overnight Patchy fog. Otherwise, cloudy, with a low around 58. Calm wind.
  • Friday A chance of drizzle before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 75. Light west wind becoming southwest 5 to 10 mph in the afternoon.
  • Friday Night Showers, mainly after 11pm. The rain could be heavy at times. Low around 56. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
  • Saturday Showers likely, mainly before 11am. Mostly cloudy, with a high near 65. Southwest 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 49. West wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
  • Sunday Mostly sunny, with a high near 69.
  • Sunday Night Mostly clear, with a low around 51.
  • Monday Sunny, with a high near 74.
  • Monday Night Mostly clear, with a low around 54.
  • Tuesday Sunny, with a high near 78.
  • Tuesday Night Mostly clear, with a low around 57.
  • Wednesday Sunny, with a high near 83.
  • Wednesday Night Mostly clear, with a low around 60.
  • Thursday Sunny, with a high near 84.