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San Bernardino, California Weather Summary
December,
2014
| 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: | 79.4°F (26.4°C) | at 2:24PM Dec 9 | 65.2°F (18.4°C) | 66°F (19°C) |
| Low Temperature: | 34.2°F (1.2°C) | at 6:29AM Dec 29 | 47.4°F (8.6°C) | 44°F (7°C) |
| Month Average: | 55.7°F (13.2°C) | for 25 days | ||
| Normal Average: | 55°F (13°C) | |||
| Precipitation: | 5.28" (134.1 mm) | |||
| Date | High | Low | Average | Precipitation |
| December 1 | 68.3°F(20.2°C) | 52.9°F(11.6°C) | 60.4°F(15.8°C) | 0.00"(0.0 mm) |
| December 2 | 61.7°F(16.5°C) | 55.6°F(13.1°C) | 57.5°F(14.2°C) | 1.26"(32.0 mm) |
| December 3 | 66.5°F(19.2°C) | 57.8°F(14.3°C) | 61.1°F(16.2°C) | 0.65"(16.5 mm) |
| December 4 | 69.3°F(20.7°C) | 56.4°F(13.5°C) | 62.5°F(16.9°C) | 0.20"(5.0 mm) |
| December 5 | 69.3°F(20.7°C) | 51.8°F(11.0°C) | 60.3°F(15.7°C) | 0.00"(0.0 mm) |
| December 6 | 71.2°F(21.8°C) | 54.0°F(12.2°C) | 60.9°F(16.1°C) | 0.00"(0.0 mm) |
| December 7 | 76.9°F(24.9°C) | 51.2°F(10.7°C) | 62.6°F(17.0°C) | 0.00"(0.0 mm) |
| December 8 | 78.4°F(25.8°C) | 53.4°F(11.9°C) | 63.9°F(17.7°C) | 0.00"(0.0 mm) |
| December 9 | 79.4°F(26.4°C) | 49.6°F(9.8°C) | 62.9°F(17.2°C) | 0.00"(0.0 mm) |
| December 10 | 75.3°F(24.1°C) | 50.0°F(10.0°C) | 61.3°F(16.3°C) | 0.00"(0.0 mm) |
| December 11 | 68.6°F(20.4°C) | 53.2°F(11.8°C) | 60.0°F(15.5°C) | 0.00"(0.0 mm) |
| December 12 | 60.9°F(16.0°C) | 50.3°F(10.1°C) | 54.4°F(12.4°C) | 2.30"(58.4 mm) |
| December 13 | 61.5°F(16.4°C) | 47.0°F(8.4°C) | 53.6°F(12.0°C) | 0.00"(0.0 mm) |
| December 14 | 62.5°F(16.9°C) | 40.9°F(4.9°C) | 51.4°F(10.8°C) | 0.00"(0.0 mm) |
| December 15 | 64.1°F(17.9°C) | 42.0°F(5.6°C) | 53.0°F(11.7°C) | 0.00"(0.0 mm) |
| December 16 | 57.1°F(13.9°C) | 48.4°F(9.1°C) | 53.0°F(11.6°C) | 0.09"(2.2 mm) |
| December 17 | 59.5°F(15.3°C) | 49.1°F(9.5°C) | 53.8°F(12.1°C) | 0.53"(13.4 mm) |
| December 18 | 62.5°F(17.0°C) | 43.4°F(6.3°C) | 52.7°F(11.5°C) | 0.00"(0.0 mm) |
| December 19 | 65.0°F(18.3°C) | 43.1°F(6.2°C) | 53.2°F(11.8°C) | 0.00"(0.0 mm) |
| December 20 | 59.8°F(15.4°C) | 44.0°F(6.7°C) | 51.8°F(11.0°C) | 0.00"(0.0 mm) |
| December 21 | 66.9°F(19.4°C) | 44.6°F(7.0°C) | 55.1°F(12.8°C) | 0.00"(0.0 mm) |
| December 22 | 75.2°F(24.0°C) | 49.9°F(9.9°C) | N/A | 0.00"(0.0 mm) |
| December 23 | N/A | N/A | N/A | N/A |
| December 24 | N/A | N/A | N/A | N/A |
| December 25 | N/A | N/A | N/A | N/A |
| December 26 | N/A | N/A | N/A | N/A |
| December 27 | 60.5°F(15.9°C) | 39.7°F(4.3°C) | N/A | 0.00"(0.0 mm) |
| December 28 | 60.8°F(16.0°C) | 35.7°F(2.1°C) | 46.9°F(8.3°C) | 0.00"(0.0 mm) |
| December 29 | 60.5°F(15.8°C) | 34.2°F(1.2°C) | 48.1°F(8.9°C) | 0.00"(0.0 mm) |
| December 30 | 53.1°F(11.7°C) | 41.7°F(5.4°C) | 49.8°F(9.9°C) | 0.25"(6.3 mm) |
| December 31 | 50.2°F(10.1°C) | 34.9°F(1.6°C) | 43.6°F(6.4°C) | 0.00"(0.0 mm) |