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San Bernardino, California Weather Summary
May,
2017
| 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: | 95.4°F (35.2°C) | at 1:43PM May 23 | 80.0°F (26.6°C) | 80°F (26°C) |
| Low Temperature: | 44.2°F (6.8°C) | at 6:23AM May 8 | 56.3°F (13.5°C) | 57°F (14°C) |
| Month Average: | 67.3°F (19.6°C) | for 31 days | ||
| Normal Average: | 67°F (20°C) | |||
| Precipitation: | 0.29" (7.3 mm) | |||
| Date | High | Low | Average | Precipitation |
| May 1 | 89.7°F(32.1°C) | 55.7°F(13.2°C) | 73.3°F(22.9°C) | 0.00"(0.0 mm) |
| May 2 | 91.4°F(33.0°C) | 59.0°F(15.0°C) | 75.3°F(24.1°C) | 0.00"(0.0 mm) |
| May 3 | 92.9°F(33.8°C) | 61.1°F(16.2°C) | 75.8°F(24.3°C) | 0.00"(0.0 mm) |
| May 4 | 93.3°F(34.0°C) | 62.4°F(16.9°C) | 75.3°F(24.0°C) | 0.00"(0.0 mm) |
| May 5 | 80.3°F(26.8°C) | 58.5°F(14.7°C) | 68.3°F(20.2°C) | 0.00"(0.0 mm) |
| May 6 | 64.3°F(17.9°C) | 48.9°F(9.4°C) | 58.4°F(14.7°C) | 0.17"(4.3 mm) |
| May 7 | 61.4°F(16.3°C) | 47.6°F(8.6°C) | 52.5°F(11.4°C) | 0.06"(1.5 mm) |
| May 8 | 75.3°F(24.1°C) | 44.2°F(6.8°C) | 59.4°F(15.2°C) | 0.00"(0.0 mm) |
| May 9 | 74.0°F(23.3°C) | 54.4°F(12.4°C) | 62.2°F(16.8°C) | 0.00"(0.0 mm) |
| May 10 | 67.1°F(19.5°C) | 56.8°F(13.8°C) | 60.8°F(16.0°C) | 0.06"(1.5 mm) |
| May 11 | 80.2°F(26.8°C) | 55.9°F(13.3°C) | 67.1°F(19.5°C) | 0.00"(0.0 mm) |
| May 12 | 79.9°F(26.6°C) | 55.0°F(12.8°C) | 66.3°F(19.0°C) | 0.00"(0.0 mm) |
| May 13 | 75.7°F(24.3°C) | 56.3°F(13.5°C) | 64.7°F(18.1°C) | 0.00"(0.0 mm) |
| May 14 | 74.0°F(23.3°C) | 52.7°F(11.5°C) | 62.4°F(16.9°C) | 0.00"(0.0 mm) |
| May 15 | 63.1°F(17.3°C) | 53.6°F(12.0°C) | 58.0°F(14.4°C) | 0.00"(0.0 mm) |
| May 16 | 63.6°F(17.6°C) | 53.9°F(12.1°C) | 58.6°F(14.8°C) | 0.00"(0.0 mm) |
| May 17 | 61.4°F(16.3°C) | 54.5°F(12.5°C) | 57.8°F(14.3°C) | 0.00"(0.0 mm) |
| May 18 | 81.1°F(27.3°C) | 49.7°F(9.9°C) | 65.2°F(18.5°C) | 0.00"(0.0 mm) |
| May 19 | 88.5°F(31.4°C) | 56.1°F(13.4°C) | 73.0°F(22.8°C) | 0.00"(0.0 mm) |
| May 20 | 94.3°F(34.6°C) | 57.6°F(14.2°C) | 77.6°F(25.3°C) | 0.00"(0.0 mm) |
| May 21 | 94.4°F(34.7°C) | 62.3°F(16.8°C) | 79.7°F(26.5°C) | 0.00"(0.0 mm) |
| May 22 | 94.4°F(34.7°C) | 62.6°F(17.0°C) | 78.9°F(26.1°C) | 0.00"(0.0 mm) |
| May 23 | 95.4°F(35.2°C) | 64.0°F(17.8°C) | 79.0°F(26.1°C) | 0.00"(0.0 mm) |
| May 24 | 86.7°F(30.4°C) | 57.9°F(14.4°C) | 71.8°F(22.1°C) | 0.00"(0.0 mm) |
| May 25 | 71.4°F(21.9°C) | 57.3°F(14.1°C) | 62.7°F(17.1°C) | 0.00"(0.0 mm) |
| May 26 | 73.7°F(23.2°C) | 57.9°F(14.4°C) | 63.6°F(17.5°C) | 0.00"(0.0 mm) |
| May 27 | 79.8°F(26.6°C) | 57.7°F(14.3°C) | 66.5°F(19.2°C) | 0.00"(0.0 mm) |
| May 28 | 87.3°F(30.7°C) | 55.5°F(13.1°C) | 70.2°F(21.2°C) | 0.00"(0.0 mm) |
| May 29 | 84.9°F(29.4°C) | 58.8°F(14.9°C) | 69.7°F(21.0°C) | 0.00"(0.0 mm) |
| May 30 | 82.6°F(28.1°C) | 57.5°F(14.2°C) | 67.1°F(19.5°C) | 0.00"(0.0 mm) |
| May 31 | 76.8°F(24.9°C) | 60.8°F(16.0°C) | 65.5°F(18.6°C) | 0.00"(0.0 mm) |