Weather WorldArnold Reservoir, CA 7-Day Night Weather Forecast
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Arnold Reservoir, CA Weather Forecast
Arnold Reservoir, CA Weather Forecast Date: 1254 AM PDT Mon Aug 17 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.
Today... Mostly sunny. Highs 93 to 100. Light winds becoming west 10 to 15 mph with gusts to 25 mph this afternoon.
Tonight... Mostly clear. Lows 64 to 69. Areas of winds west to 10 mph in the evening becoming light.
Tuesday... Mostly sunny in the morning...Becoming partly cloudy. Highs 95 to 101. Areas of winds west to 10 mph...Becoming 10 to 15 mph in the afternoon.
Tuesday Night... Mostly clear in the evening...Becoming partly cloudy. Lows 65 to 70. Areas of winds west to 10 mph in the evening becoming light.
Wednesday... Partly cloudy in the morning...Becoming mostly sunny. Highs 96 to 103. Light winds becoming west 10 to 15 mph in the afternoon.
Wednesday Night... Mostly clear in the evening...Becoming partly cloudy. Lows 66 to 71.
Thursday... Mostly sunny. Highs 97 to 104.
Thursday Night... Mostly clear. Lows 66 to 72.
Friday... Mostly sunny. Highs 96 to 103.
Friday Night... Mostly clear. Lows 66 to 71.
Saturday... Mostly sunny. Highs 96 to 102.
Saturday Night... Mostly clear. Lows 66 to 71.
POP = Probability of Precipitation
Arnold Reservoir Radar Loop
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