Weather WorldUnion Lake, CA 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Union Lake Weather Forecast
Union Lake, CA Weather Forecast Date: 136 PM PDT Mon Aug 17 2026
Weather forecast for Union Lake, CA
Tonight Lo: 60°F Lo: 16°C |
Tonight... Mostly clear. Patchy smoke in the evening. Lows 54 to 64. South wind around 10 mph shifting to the north overnight. |
Tue Hi: 92°FHi: 33°C Lo: 62°F Lo: 17°C |
Tuesday... Partly cloudy in the morning then clearing. Highs 84 to 99. North wind around 5 mph shifting to the south in the afternoon. |
Wed Hi: 92°FHi: 33°C Lo: 62°F Lo: 17°C |
Wednesday... Sunny. Highs 84 to 99. Southeast wind around 10 mph. |
| Thu Hi: 89°FHi: 32°C Lo: 60°F Lo: 16°C |
Thursday... Mostly sunny. Highs 81 to 96. Southeast wind around 10 mph. |
| Fri Hi: 89°FHi: 32°C Lo: 54°F Lo: 12°C |
Friday... Partly cloudy. Lows 54 to 64. Highs 81 to 96. |
| Sat Hi: 88°FHi: 31°C Lo: 56°F Lo: 13°C |
Saturday... Clear. Highs 80 to 95. Lows 50 to 60. |
| Sun Hi: 88°FHi: 31°C Lo: 56°F Lo: 13°C |
Sunday... Clear. Highs 80 to 95. Lows 50 to 60. |
| Mon Hi: 88°FHi: 31°C Lo: 56°F Lo: 13°C |
Monday... Clear. Highs 80 to 95. Lows 50 to 60. |
Union Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...