what is the weather like in sacramento ca
Key weather averages for Sacramento in January. 1  11. 11Â°C max day temperature. 2  5. 5 hours of sunshine per day. 3  9. 9 days with some rainfall. 4  3. 3Â°C min night temperature. 5  10. 10 hours of daylight per day. 6  0. No heat & humidity. 7  103. 103 mm of monthly rainfall. 8  2. 2 (Low) UV index.