Expires:202512260015;;193173 FPUS56 KSGX 251043 ZFPSGX Zone Forecast Product for Extreme Southwest California National Weather Service San Diego CA 243 AM PST Thu Dec 25 2025 CAZ048-260015- San Bernardino and Riverside County Valleys-The Inland Empire- Including the cities of Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona 243 AM PST Thu Dec 25 2025 ...FLOOD WATCH NOW IN EFFECT UNTIL 6 AM PST EARLY THIS MORNING... .TODAY...Partly cloudy with a chance of showers. Highs 60 to 66. Areas of winds south 10 to 15 mph. Gusts to 25 mph...becoming 30 mph this afternoon. Chance of measurable precipitation 50 percent. .TONIGHT...Mostly cloudy. A chance of showers in the evening, then showers likely overnight. Lows 43 to 48 in wind sheltered areas to 45 to 52 in warmer locations. Areas of winds southeast 10 to 15 mph. Gusts to 25 mph overnight. Chance of measurable precipitation 70 percent. .FRIDAY...Showers in the morning, then showers and a slight chance of thunderstorms in the afternoon. Locally heavy rainfall possible in the afternoon. Highs 56 to 61. Areas of winds south 10 to 15 mph with gusts to 25 mph. .FRIDAY NIGHT...Mostly cloudy. Showers likely and a slight chance of thunderstorms in the evening, then a chance of showers overnight. Lows 40 to 46. Areas of winds south to 10 mph. Chance of measurable precipitation 70 percent. .SATURDAY...Partly cloudy. A slight chance of showers in the morning. Highs 55 to 61. Light winds becoming west 10 mph in the afternoon. Chance of measurable precipitation 20 percent. .SATURDAY NIGHT...Mostly clear. Lows 35 to 42. .SUNDAY...Mostly sunny. Highs 61 to 66. .SUNDAY NIGHT...Mostly clear. Lows 37 to 45. .MONDAY...Mostly sunny. Highs 64 to 69. .MONDAY NIGHT...Mostly clear. Lows 41 to 48. .TUESDAY...Partly cloudy. Highs 69 to 74. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers overnight. Lows 43 to 50. .WEDNESDAY...Partly cloudy. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs 70 to 74. $$