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Simi Valley, California Weather Summary
December,
2023
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
| 1 | 2 | |||||
| 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| 31 |
| Extremes | Average | Normal | ||
| High Temperature: | 79.6°F (26.4°C) | at 12:57PM Dec 5 | 67.7°F (19.8°C) | 65°F (19°C) |
| Low Temperature: | 41.3°F (5.2°C) | at 7:06AM Dec 25 | 50.2°F (10.1°C) | 47°F (8°C) |
| Month Average: | 58.2°F (14.5°C) | for 31 days | ||
| Normal Average: | 56°F (13°C) | |||
| Precipitation: | 3.56" (90.4 mm) | |||
| Date | High | Low | Average | Precipitation |
| December 1 | 65.4°F(18.6°C) | 43.7°F(6.5°C) | 54.9°F(12.7°C) | 0.00"(0.0 mm) |
| December 2 | 68.1°F(20.1°C) | 42.4°F(5.8°C) | 53.4°F(11.9°C) | 0.00"(0.0 mm) |
| December 3 | 67.6°F(19.8°C) | 43.1°F(6.1°C) | 53.9°F(12.2°C) | 0.00"(0.0 mm) |
| December 4 | 77.7°F(25.4°C) | 47.5°F(8.6°C) | 65.1°F(18.4°C) | 0.00"(0.0 mm) |
| December 5 | 79.6°F(26.4°C) | 66.7°F(19.3°C) | 71.5°F(21.9°C) | 0.00"(0.0 mm) |
| December 6 | 74.9°F(23.8°C) | 49.1°F(9.5°C) | 62.2°F(16.8°C) | 0.00"(0.0 mm) |
| December 7 | 68.0°F(20.0°C) | 46.0°F(7.8°C) | 55.9°F(13.3°C) | 0.00"(0.0 mm) |
| December 8 | 69.0°F(20.6°C) | 53.3°F(11.8°C) | 59.3°F(15.2°C) | 0.00"(0.0 mm) |
| December 9 | 64.0°F(17.8°C) | 55.1°F(12.8°C) | 58.9°F(14.9°C) | 0.01"(0.2 mm) |
| December 10 | 69.5°F(20.8°C) | 53.3°F(11.8°C) | 61.6°F(16.4°C) | 0.00"(0.0 mm) |
| December 11 | 74.1°F(23.4°C) | 45.9°F(7.7°C) | 57.3°F(14.1°C) | 0.00"(0.0 mm) |
| December 12 | 68.6°F(20.4°C) | 43.9°F(6.6°C) | 53.9°F(12.1°C) | 0.00"(0.0 mm) |
| December 13 | 68.6°F(20.4°C) | 42.6°F(5.9°C) | 58.8°F(14.9°C) | 0.00"(0.0 mm) |
| December 14 | 72.3°F(22.4°C) | 55.3°F(13.0°C) | 63.1°F(17.3°C) | 0.00"(0.0 mm) |
| December 15 | 72.7°F(22.6°C) | 59.0°F(15.0°C) | 64.9°F(18.3°C) | 0.00"(0.0 mm) |
| December 16 | 76.8°F(24.9°C) | 62.0°F(16.7°C) | 67.7°F(19.8°C) | 0.00"(0.0 mm) |
| December 17 | 75.4°F(24.1°C) | 64.3°F(18.0°C) | 68.6°F(20.3°C) | 0.00"(0.0 mm) |
| December 18 | 67.8°F(19.9°C) | 57.0°F(13.9°C) | 60.3°F(15.7°C) | 0.02"(0.5 mm) |
| December 19 | 62.3°F(16.8°C) | 56.2°F(13.4°C) | 58.4°F(14.7°C) | 0.30"(7.6 mm) |
| December 20 | 59.4°F(15.2°C) | 56.9°F(13.8°C) | 57.8°F(14.3°C) | 0.43"(10.9 mm) |
| December 21 | 58.5°F(14.7°C) | 55.6°F(13.1°C) | 57.0°F(13.9°C) | 2.04"(51.8 mm) |
| December 22 | 65.2°F(18.4°C) | 47.6°F(8.7°C) | 56.7°F(13.7°C) | 0.22"(5.5 mm) |
| December 23 | 62.1°F(16.7°C) | 45.8°F(7.7°C) | 53.9°F(12.2°C) | 0.01"(0.2 mm) |
| December 24 | 63.5°F(17.5°C) | 46.6°F(8.1°C) | 54.0°F(12.2°C) | 0.00"(0.0 mm) |
| December 25 | 65.9°F(18.8°C) | 41.3°F(5.2°C) | 52.1°F(11.1°C) | 0.00"(0.0 mm) |
| December 26 | 66.4°F(19.1°C) | 46.6°F(8.1°C) | 55.2°F(12.9°C) | 0.00"(0.0 mm) |
| December 27 | 66.1°F(18.9°C) | 47.1°F(8.4°C) | 54.2°F(12.3°C) | 0.00"(0.0 mm) |
| December 28 | 65.4°F(18.6°C) | 42.5°F(5.8°C) | 52.7°F(11.5°C) | 0.00"(0.0 mm) |
| December 29 | 67.1°F(19.5°C) | 47.5°F(8.6°C) | 54.8°F(12.7°C) | 0.00"(0.0 mm) |
| December 30 | 59.4°F(15.2°C) | 47.6°F(8.7°C) | 54.0°F(12.2°C) | 0.52"(13.2 mm) |
| December 31 | 57.3°F(14.1°C) | 45.0°F(7.2°C) | 51.3°F(10.7°C) | 0.01"(0.2 mm) |