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Simi Valley, California Weather Summary
December,
2011
| 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: | 80.3°F (26.8°C) | at 1:09PM Dec 31 | 66.8°F (19.3°C) | 65°F (19°C) |
| Low Temperature: | 37.5°F (3.0°C) | at 7:05AM Dec 11 | 43.7°F (6.5°C) | 47°F (8°C) |
| Month Average: | 55.0°F (12.8°C) | for 31 days | ||
| Normal Average: | 56°F (13°C) | |||
| Precipitation: | 0.72" (18.2 mm) | |||
| Date | High | Low | Average | Precipitation |
| December 1 | 63.6°F(17.5°C) | 49.0°F(9.4°C) | 57.0°F(13.9°C) | 0.00"(0.0 mm) |
| December 2 | 67.1°F(19.5°C) | 40.6°F(4.8°C) | 53.1°F(11.7°C) | 0.00"(0.0 mm) |
| December 3 | 59.2°F(15.1°C) | 38.3°F(3.5°C) | 48.7°F(9.3°C) | 0.00"(0.0 mm) |
| December 4 | 65.0°F(18.3°C) | 37.6°F(3.1°C) | 49.6°F(9.8°C) | 0.00"(0.0 mm) |
| December 5 | 59.8°F(15.4°C) | 40.8°F(4.9°C) | 52.8°F(11.5°C) | 0.00"(0.0 mm) |
| December 6 | 62.3°F(16.8°C) | 48.1°F(9.0°C) | 53.9°F(12.2°C) | 0.00"(0.0 mm) |
| December 7 | 68.0°F(20.0°C) | 44.7°F(7.1°C) | 57.3°F(14.0°C) | 0.00"(0.0 mm) |
| December 8 | 72.3°F(22.4°C) | 38.7°F(3.7°C) | 52.3°F(11.3°C) | 0.00"(0.0 mm) |
| December 9 | 70.9°F(21.6°C) | 56.2°F(13.5°C) | 63.2°F(17.3°C) | 0.00"(0.0 mm) |
| December 10 | 74.3°F(23.5°C) | 42.5°F(5.8°C) | 58.3°F(14.6°C) | 0.00"(0.0 mm) |
| December 11 | 57.4°F(14.1°C) | 37.5°F(3.0°C) | 48.0°F(8.9°C) | 0.00"(0.0 mm) |
| December 12 | 48.7°F(9.3°C) | 46.0°F(7.8°C) | 47.2°F(8.4°C) | 0.61"(15.4 mm) |
| December 13 | 59.5°F(15.3°C) | 41.3°F(5.2°C) | 49.7°F(9.8°C) | 0.04"(1.0 mm) |
| December 14 | 63.1°F(17.3°C) | 38.4°F(3.6°C) | 48.3°F(9.0°C) | 0.00"(0.0 mm) |
| December 15 | 57.0°F(13.9°C) | 37.8°F(3.2°C) | 47.4°F(8.6°C) | 0.02"(0.5 mm) |
| December 16 | 65.6°F(18.7°C) | 49.5°F(9.7°C) | 58.6°F(14.8°C) | 0.00"(0.0 mm) |
| December 17 | 65.6°F(18.7°C) | 51.3°F(10.7°C) | 58.7°F(14.8°C) | 0.05"(1.2 mm) |
| December 18 | 63.7°F(17.6°C) | 42.7°F(5.9°C) | 51.8°F(11.0°C) | 0.00"(0.0 mm) |
| December 19 | 57.2°F(14.0°C) | 42.1°F(5.6°C) | 49.4°F(9.7°C) | 0.00"(0.0 mm) |
| December 20 | 66.1°F(18.9°C) | 39.2°F(4.0°C) | 52.1°F(11.2°C) | 0.00"(0.0 mm) |
| December 21 | 67.8°F(19.9°C) | 40.2°F(4.6°C) | 51.4°F(10.8°C) | 0.00"(0.0 mm) |
| December 22 | 59.2°F(15.1°C) | 41.7°F(5.4°C) | 51.6°F(10.9°C) | 0.00"(0.0 mm) |
| December 23 | 67.1°F(19.5°C) | 38.1°F(3.4°C) | 54.7°F(12.6°C) | 0.00"(0.0 mm) |
| December 24 | 71.3°F(21.8°C) | 55.4°F(13.0°C) | 62.7°F(17.1°C) | 0.00"(0.0 mm) |
| December 25 | 74.5°F(23.6°C) | 46.3°F(7.9°C) | 62.4°F(16.9°C) | 0.00"(0.0 mm) |
| December 26 | 73.2°F(22.9°C) | 42.9°F(6.1°C) | 54.6°F(12.6°C) | 0.00"(0.0 mm) |
| December 27 | 74.7°F(23.7°C) | 38.9°F(3.9°C) | 58.1°F(14.5°C) | 0.00"(0.0 mm) |
| December 28 | 78.2°F(25.6°C) | 48.3°F(9.0°C) | 62.3°F(16.8°C) | 0.00"(0.0 mm) |
| December 29 | 80.1°F(26.7°C) | 49.4°F(9.7°C) | 63.0°F(17.2°C) | 0.00"(0.0 mm) |
| December 30 | 76.5°F(24.7°C) | 46.0°F(7.8°C) | 59.3°F(15.2°C) | 0.00"(0.0 mm) |
| December 31 | 80.3°F(26.8°C) | 45.8°F(7.6°C) | 66.7°F(19.3°C) | 0.00"(0.0 mm) |