Weather WorldSwamp Lake, CA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Swamp Lake, CA Weather Forecast
Swamp Lake, CA Weather Forecast Date: 800 PM PDT Mon Sep 21 2026
The area/counties/county of: Sierra (Cal, including the city of Twain Harte, Arnold.or toggle through each period.
Tonight... Mostly cloudy with a slight chance of rain early in the evening, then partly cloudy in the late evening and overnight. Lows 41 to 51. Northeast winds up to 10 mph.
Tuesday... Sunny. Highs 64 to 74. Light winds becoming west up to 10 mph in the afternoon.
Tuesday Night... Clear. Lows 44 to 54. North winds up to 10 mph shifting to the east after midnight. Gusts up to 20 mph.
Wednesday... Sunny. Highs 67 to 77. East winds around 10 mph shifting to the southwest up to 10 mph in the afternoon.
Wednesday Night... Mostly clear. Lows 46 to 56. West winds up to 10 mph shifting to the east after midnight.
Thursday... Mostly sunny. Highs 65 to 75.
Thursday Night... Mostly clear. Lows 45 to 55.
Friday... Mostly clear. Highs 59 to 69. Lows 43 to 53.
Saturday... Mostly clear. Highs 59 to 69. Lows 43 to 53.
Sunday... Mostly clear. Highs 59 to 69. Lows 43 to 53.
Sunday Night... Clear. Lows 38 to 48. Highs 59 to 69.
POP = Probability of Precipitation
Swamp Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...