Weather WorldEl Casco Lake, CA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
El Casco Lake, CA Weather Forecast
El Casco Lake, CA Weather Forecast Date: 1215 AM PDT Mon Sep 28 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 79 to 84. Areas of winds south to 10 mph becoming southwest with gusts to 25 mph this afternoon.
Tonight... Mostly clear. Cooler. Lows 52 to 60. Areas of winds south 10 to 15 mph with gusts to 25 mph in the evening becoming light.
Tuesday... Mostly sunny. Highs 84 to 90. Areas of winds north 10 to 15 mph with gusts to 25 mph becoming west with gusts to 30 mph in the afternoon.
Tuesday Night... Clear. Lows 58 to 63. Areas of winds south 10 to 15 mph in the evening becoming light.
Wednesday... Mostly sunny. Highs 88 to 93. Light winds becoming west to 10 mph in the afternoon.
Wednesday Night... Clear. Lows 60 to 64.
Thursday... Sunny. Highs 93 to 99.
Thursday Night... Clear. Lows 65 to 68.
Friday... Mostly sunny. Hot. Highs 94 to 100.
Friday Night... Mostly clear. Lows 66 to 70.
Saturday... Sunny, hot. Highs 94 to 100.
Saturday Night... Clear. Lows 66 to 70.
POP = Probability of Precipitation
El Casco Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...