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Simi Valley, California Weather Summary
December,
2015
| 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: | 86.0°F (30.0°C) | at 1:35PM Dec 8 | 64.1°F (17.8°C) | 65°F (19°C) |
| Low Temperature: | 33.2°F (0.7°C) | at 6:53AM Dec 28 | 44.3°F (6.8°C) | 47°F (8°C) |
| Month Average: | 53.9°F (12.2°C) | for 31 days | ||
| Normal Average: | 56°F (13°C) | |||
| Precipitation: | 1.01" (25.6 mm) | |||
| Date | High | Low | Average | Precipitation |
| December 1 | 67.9°F(19.9°C) | 40.3°F(4.6°C) | 57.1°F(13.9°C) | 0.00"(0.0 mm) |
| December 2 | 74.1°F(23.4°C) | 56.3°F(13.5°C) | 64.2°F(17.9°C) | 0.00"(0.0 mm) |
| December 3 | 75.9°F(24.4°C) | 47.4°F(8.6°C) | 62.0°F(16.7°C) | 0.00"(0.0 mm) |
| December 4 | 67.9°F(19.9°C) | 45.9°F(7.7°C) | 54.8°F(12.7°C) | 0.00"(0.0 mm) |
| December 5 | 70.5°F(21.4°C) | 44.8°F(7.1°C) | 61.6°F(16.4°C) | 0.00"(0.0 mm) |
| December 6 | 77.2°F(25.1°C) | 54.8°F(12.6°C) | 65.2°F(18.4°C) | 0.00"(0.0 mm) |
| December 7 | 80.5°F(26.9°C) | 60.0°F(15.6°C) | 70.7°F(21.5°C) | 0.00"(0.0 mm) |
| December 8 | 86.0°F(30.0°C) | 59.2°F(15.1°C) | 70.7°F(21.5°C) | 0.00"(0.0 mm) |
| December 9 | 77.0°F(25.0°C) | 53.0°F(11.7°C) | 62.2°F(16.8°C) | 0.00"(0.0 mm) |
| December 10 | 64.8°F(18.2°C) | 47.6°F(8.7°C) | 57.0°F(13.9°C) | 0.05"(1.2 mm) |
| December 11 | 60.6°F(15.9°C) | 45.9°F(7.7°C) | 53.4°F(11.9°C) | 0.00"(0.0 mm) |
| December 12 | 62.5°F(16.9°C) | 49.9°F(10.0°C) | 54.6°F(12.5°C) | 0.00"(0.0 mm) |
| December 13 | 61.9°F(16.6°C) | 42.8°F(6.0°C) | 52.1°F(11.2°C) | 0.18"(4.5 mm) |
| December 14 | 56.5°F(13.6°C) | 35.7°F(2.0°C) | 46.1°F(7.8°C) | 0.00"(0.0 mm) |
| December 15 | 58.0°F(14.4°C) | 44.1°F(6.7°C) | 49.3°F(9.6°C) | 0.00"(0.0 mm) |
| December 16 | 60.6°F(15.9°C) | 39.6°F(4.2°C) | 49.1°F(9.5°C) | 0.00"(0.0 mm) |
| December 17 | 53.1°F(11.7°C) | 36.5°F(2.5°C) | 45.6°F(7.6°C) | 0.00"(0.0 mm) |
| December 18 | 69.7°F(20.9°C) | 45.4°F(7.5°C) | 56.8°F(13.8°C) | 0.00"(0.0 mm) |
| December 19 | 61.5°F(16.4°C) | 40.9°F(4.9°C) | 50.0°F(10.0°C) | 0.15"(3.8 mm) |
| December 20 | 57.9°F(14.4°C) | 37.7°F(3.2°C) | 47.1°F(8.4°C) | 0.00"(0.0 mm) |
| December 21 | 59.4°F(15.2°C) | 40.2°F(4.5°C) | 50.0°F(10.0°C) | 0.35"(8.8 mm) |
| December 22 | 61.0°F(16.1°C) | 53.1°F(11.7°C) | 57.1°F(13.9°C) | 0.27"(6.8 mm) |
| December 23 | 62.9°F(17.2°C) | 46.2°F(7.9°C) | 53.7°F(12.1°C) | 0.00"(0.0 mm) |
| December 24 | 57.1°F(14.0°C) | 43.8°F(6.5°C) | 50.4°F(10.2°C) | 0.00"(0.0 mm) |
| December 25 | 55.6°F(13.1°C) | 36.2°F(2.3°C) | 45.9°F(7.7°C) | 0.00"(0.0 mm) |
| December 26 | 57.1°F(14.0°C) | 38.1°F(3.4°C) | 48.4°F(9.1°C) | 0.01"(0.2 mm) |
| December 27 | 57.7°F(14.3°C) | 35.8°F(2.1°C) | 47.8°F(8.8°C) | 0.00"(0.0 mm) |
| December 28 | 54.0°F(12.2°C) | 33.2°F(0.7°C) | 43.6°F(6.4°C) | 0.00"(0.0 mm) |
| December 29 | 60.5°F(15.8°C) | 38.2°F(3.5°C) | 47.8°F(8.8°C) | 0.00"(0.0 mm) |
| December 30 | 59.3°F(15.2°C) | 34.3°F(1.3°C) | 45.4°F(7.5°C) | 0.00"(0.0 mm) |
| December 31 | 58.3°F(14.6°C) | 46.5°F(8.0°C) | 51.5°F(10.9°C) | 0.00"(0.0 mm) |