Local Forecast for Riverside, CA Currently 57.0°F HI: 76.0°F LO: 48.0°F Extended Forecast Tonight Mostly clear, with a low around 48. East wind around 5 mph. Wednesday Sunny, with a high near 76. Northeast wind around 5 mph becoming calm. Wednesday Night Mostly clear, with a low around 48. East wind around 5 mph. Thursday Mostly sunny, with a high near 84. Calm wind becoming north around 5 mph in the afternoon. Thursday Night Partly cloudy, with a low around 53. Southeast wind 5 to 10 mph. Friday Partly sunny, with a high near 82. Friday Night Mostly cloudy, with a low around 52. Saturday Mostly sunny, with a high near 77. Saturday Night Partly cloudy, with a low around 49. Sunday A chance of showers. Partly sunny, with a high near 62. Sunday Night A chance of showers. Mostly cloudy, with a low around 43. Monday Mostly sunny, with a high near 65. Monday Night Mostly clear, with a low around 43.