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County, CA Weather Forecast
County, CA Weather Forecast Date: 1231 PM PDT Fri Sep 25 2026
The area/counties/county of: San Bernardino And Riverside County Valleys, including the cities of: Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona.or toggle through each period.
Tonight... Mostly clear this evening...Becoming partly cloudy. Lows 64 to 68. Areas of winds west to 10 mph this evening becoming light.
Saturday... Partly cloudy in the morning...Becoming mostly sunny. Highs 91 to 96. Light winds becoming southwest 10 to 15 mph with gusts to 25 mph in the afternoon.
Saturday Night... Partly cloudy in the evening...Becoming mostly cloudy. Lows 64 to 68. Areas of winds southwest to 10 mph becoming east overnight.
Sunday... Mostly cloudy with a slight chance of showers in the morning, then partly cloudy in the afternoon. Highs 84 to 89. Light winds becoming southwest 10 to 15 mph with gusts to 25 mph in the afternoon. Chance of measurable precipitation 20%.
Sunday Night... Partly cloudy. A slight chance of showers overnight. Lows 58 to 64. Areas of winds southwest 10 mph becoming southeast to 10 mph overnight. Chance of measurable precipitation 20%.
Monday... Partly cloudy with patchy fog in the morning...Becoming mostly sunny. Highs 77 to 83.
Monday Night... Mostly clear. Lows 53 to 61.
Tuesday... Mostly sunny. Highs 83 to 89.
Tuesday Night... Clear. Lows 58 to 64.
Wednesday... Mostly sunny. Highs 87 to 93.
Wednesday Night... Clear. Lows 60 to 65.
Thursday... Partly cloudy in the morning...Becoming mostly sunny. Highs 88 to 94.
Thursday Night... Mostly clear. Lows 60 to 65.
POP = Probability of Precipitation
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