Weather WorldArnold, CA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Arnold, CA Weather Forecast
Arnold, CA Weather Forecast Date: 800 AM PDT Mon Sep 21 2026
The area/counties/county of: Sierra (Cal, including the city of Twain Harte, Arnold.or toggle through each period.
Today... Partly cloudy in the morning then becoming mostly cloudy. Patchy smoke in the morning. Haze until late afternoon. Highs 69 to 79. Light winds.
Tonight... Partly cloudy in the evening then clearing. Lows 50 to 60. Light winds.
Tuesday... Sunny. Highs 71 to 81. Light winds becoming west up to 10 mph in the afternoon.
Tuesday Night... Clear. Lows 53 to 63. Light winds.
Wednesday... Sunny, warmer. Highs 77 to 87. East winds up to 10 mph in the morning becoming light.
Wednesday Night... Clear. Lows 56 to 66.
Thursday... Sunny. Highs 79 to 89.
Thursday Night... Mostly clear. Lows 53 to 63. Highs 74 to 84.
Friday... Mostly clear. Lows 53 to 63. Highs 74 to 84.
Saturday... Mostly clear. Lows 53 to 63. Highs 74 to 84.
POP = Probability of Precipitation
Arnold Radar Loop
Use the map search tool if you want to place a location marker on the radar map...