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Simi Valley, California Weather Summary
December,
2020
| 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: | 80.8°F (27.1°C) | at 2:42PM Dec 21 | 67.8°F (19.9°C) | 65°F (19°C) |
| Low Temperature: | 36.2°F (2.3°C) | at 6:15AM Dec 29 | 48.1°F (9.0°C) | 47°F (8°C) |
| Month Average: | 57.9°F (14.4°C) | for 31 days | ||
| Normal Average: | 56°F (13°C) | |||
| Precipitation: | 1.29" (32.7 mm) | |||
| Date | High | Low | Average | Precipitation |
| December 1 | 78.0°F(25.6°C) | 52.9°F(11.6°C) | 67.9°F(20.0°C) | 0.00"(0.0 mm) |
| December 2 | 76.5°F(24.7°C) | 60.4°F(15.8°C) | 67.9°F(19.9°C) | 0.00"(0.0 mm) |
| December 3 | 66.8°F(19.3°C) | 54.8°F(12.7°C) | 60.5°F(15.8°C) | 0.02"(0.5 mm) |
| December 4 | 72.9°F(22.7°C) | 50.0°F(10.0°C) | 61.3°F(16.3°C) | 0.00"(0.0 mm) |
| December 5 | 74.6°F(23.6°C) | 45.1°F(7.3°C) | 58.2°F(14.5°C) | 0.00"(0.0 mm) |
| December 6 | 75.1°F(23.9°C) | 44.3°F(6.8°C) | 57.5°F(14.2°C) | 0.00"(0.0 mm) |
| December 7 | 71.4°F(21.9°C) | 59.1°F(15.1°C) | 65.6°F(18.7°C) | 0.06"(1.5 mm) |
| December 8 | 76.5°F(24.7°C) | 66.6°F(19.2°C) | 70.0°F(21.1°C) | 0.00"(0.0 mm) |
| December 9 | 58.6°F(14.8°C) | 47.7°F(8.7°C) | 60.5°F(15.8°C) | 0.00"(0.0 mm) |
| December 10 | 64.8°F(18.2°C) | 43.9°F(6.6°C) | 53.0°F(11.7°C) | 0.00"(0.0 mm) |
| December 11 | 60.1°F(15.6°C) | 43.8°F(6.6°C) | 50.5°F(10.3°C) | 0.00"(0.0 mm) |
| December 12 | 63.6°F(17.6°C) | 42.8°F(6.0°C) | 53.0°F(11.6°C) | 0.00"(0.0 mm) |
| December 13 | 66.1°F(19.0°C) | 47.0°F(8.4°C) | 56.8°F(13.8°C) | 0.00"(0.0 mm) |
| December 14 | 59.9°F(15.5°C) | 45.4°F(7.5°C) | 53.0°F(11.7°C) | 0.00"(0.0 mm) |
| December 15 | 63.9°F(17.7°C) | 44.7°F(7.0°C) | 56.2°F(13.5°C) | 0.00"(0.0 mm) |
| December 16 | 72.0°F(22.2°C) | 48.5°F(9.2°C) | 59.8°F(15.5°C) | 0.00"(0.0 mm) |
| December 17 | 60.5°F(15.8°C) | 47.5°F(8.6°C) | 53.7°F(12.0°C) | 0.00"(0.0 mm) |
| December 18 | 65.7°F(18.7°C) | 48.2°F(9.0°C) | 57.5°F(14.2°C) | 0.00"(0.0 mm) |
| December 19 | 73.1°F(22.9°C) | 52.4°F(11.4°C) | 61.8°F(16.6°C) | 0.00"(0.0 mm) |
| December 20 | 78.2°F(25.7°C) | 60.1°F(15.6°C) | 68.1°F(20.0°C) | 0.00"(0.0 mm) |
| December 21 | 80.8°F(27.1°C) | 52.3°F(11.3°C) | 66.9°F(19.4°C) | 0.00"(0.0 mm) |
| December 22 | 72.0°F(22.2°C) | 47.0°F(8.3°C) | 56.5°F(13.6°C) | 0.00"(0.0 mm) |
| December 23 | 67.2°F(19.6°C) | 44.5°F(6.9°C) | 58.5°F(14.7°C) | 0.00"(0.0 mm) |
| December 24 | 59.2°F(15.1°C) | 53.4°F(11.9°C) | 56.0°F(13.3°C) | 0.00"(0.0 mm) |
| December 25 | 72.1°F(22.3°C) | 46.8°F(8.2°C) | 58.1°F(14.5°C) | 0.00"(0.0 mm) |
| December 26 | 66.2°F(19.0°C) | 42.4°F(5.8°C) | 54.4°F(12.4°C) | 0.00"(0.0 mm) |
| December 27 | 68.2°F(20.1°C) | 46.3°F(7.9°C) | 55.6°F(13.1°C) | 0.17"(4.3 mm) |
| December 28 | 49.7°F(9.8°C) | 40.5°F(4.7°C) | 45.5°F(7.5°C) | 1.03"(26.1 mm) |
| December 29 | 59.3°F(15.2°C) | 36.2°F(2.3°C) | 47.1°F(8.4°C) | 0.01"(0.2 mm) |
| December 30 | 68.3°F(20.2°C) | 39.6°F(4.2°C) | 53.9°F(12.2°C) | 0.00"(0.0 mm) |
| December 31 | 61.2°F(16.2°C) | 38.2°F(3.4°C) | 49.2°F(9.6°C) | 0.00"(0.0 mm) |