Currently
66°F
in Fallbrook, California, USA
70°F / 59°F
calm
0.07"
Friday, October 23, 2026 2:51 PM PDT
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Fallbrook, California Weather Summary
September,
2026
| 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 |
| Extremes | Average | Normal | ||
| High Temperature: | 108.4°F (42.5°C) | at 12:45PM Sep 9 | 87.4°F (30.8°C) | 86°F (30°C) |
| Low Temperature: | 57.7°F (14.3°C) | at 7:05AM Sep 29 | 65.7°F (18.7°C) | 62°F (17°C) |
| Month Average: | 74.3°F (23.5°C) | for 30 days | ||
| Normal Average: | 71°F (22°C) | |||
| Precipitation: | 0.06" (1.5 mm) | |||
| Date | High | Low | Average | Precipitation |
| September 1 | 87.3°F(30.7°C) | 63.9°F(17.7°C) | 72.8°F(22.7°C) | 0.00"(0.0 mm) |
| September 2 | 84.0°F(28.9°C) | 59.0°F(15.0°C) | 70.1°F(21.2°C) | 0.00"(0.0 mm) |
| September 3 | 83.1°F(28.4°C) | 58.1°F(14.5°C) | 68.9°F(20.5°C) | 0.00"(0.0 mm) |
| September 4 | 83.2°F(28.4°C) | 61.1°F(16.2°C) | 70.3°F(21.3°C) | 0.00"(0.0 mm) |
| September 5 | 94.1°F(34.5°C) | 59.4°F(15.2°C) | 76.2°F(24.5°C) | 0.00"(0.0 mm) |
| September 6 | 85.2°F(29.6°C) | 70.9°F(21.6°C) | 76.2°F(24.6°C) | 0.05"(1.2 mm) |
| September 7 | 94.6°F(34.8°C) | 75.2°F(24.0°C) | 84.0°F(28.9°C) | 0.00"(0.0 mm) |
| September 8 | 106.0°F(41.1°C) | 78.3°F(25.7°C) | 90.3°F(32.4°C) | 0.00"(0.0 mm) |
| September 9 | 108.4°F(42.5°C) | 78.6°F(25.9°C) | 90.1°F(32.3°C) | 0.00"(0.0 mm) |
| September 10 | 96.9°F(36.1°C) | 74.0°F(23.4°C) | 83.4°F(28.6°C) | 0.01"(0.2 mm) |
| September 11 | 90.7°F(32.6°C) | 71.3°F(21.8°C) | 79.6°F(26.5°C) | 0.00"(0.0 mm) |
| September 12 | 86.3°F(30.1°C) | 67.8°F(19.9°C) | 74.6°F(23.7°C) | 0.00"(0.0 mm) |
| September 13 | 85.7°F(29.8°C) | 65.6°F(18.7°C) | 73.2°F(22.9°C) | 0.00"(0.0 mm) |
| September 14 | 83.4°F(28.6°C) | 64.6°F(18.1°C) | 71.5°F(22.0°C) | 0.00"(0.0 mm) |
| September 15 | 80.5°F(27.0°C) | 65.2°F(18.4°C) | 70.7°F(21.5°C) | 0.00"(0.0 mm) |
| September 16 | 80.7°F(27.1°C) | 66.8°F(19.3°C) | 71.5°F(22.0°C) | 0.00"(0.0 mm) |
| September 17 | 81.7°F(27.6°C) | 64.5°F(18.1°C) | 71.7°F(22.1°C) | 0.00"(0.0 mm) |
| September 18 | 80.9°F(27.1°C) | 61.1°F(16.2°C) | 69.5°F(20.8°C) | 0.00"(0.0 mm) |
| September 19 | 83.7°F(28.7°C) | 64.4°F(18.0°C) | 71.1°F(21.7°C) | 0.00"(0.0 mm) |
| September 20 | 85.4°F(29.6°C) | 62.1°F(16.7°C) | 70.5°F(21.4°C) | 0.00"(0.0 mm) |
| September 21 | 79.2°F(26.2°C) | 67.2°F(19.6°C) | 71.1°F(21.7°C) | 0.00"(0.0 mm) |
| September 22 | 83.3°F(28.5°C) | 65.8°F(18.8°C) | 72.1°F(22.3°C) | 0.00"(0.0 mm) |
| September 23 | 85.3°F(29.6°C) | 62.0°F(16.7°C) | 70.5°F(21.4°C) | 0.00"(0.0 mm) |
| September 24 | 84.4°F(29.1°C) | 64.1°F(17.8°C) | 70.3°F(21.3°C) | 0.00"(0.0 mm) |
| September 25 | 88.2°F(31.2°C) | 64.3°F(17.9°C) | 72.2°F(22.3°C) | 0.00"(0.0 mm) |
| September 26 | 97.0°F(36.1°C) | 63.4°F(17.4°C) | 76.4°F(24.6°C) | 0.00"(0.0 mm) |
| September 27 | 88.9°F(31.6°C) | 69.2°F(20.7°C) | 76.5°F(24.7°C) | 0.00"(0.0 mm) |
| September 28 | 84.2°F(29.0°C) | 61.4°F(16.3°C) | 73.0°F(22.8°C) | 0.00"(0.0 mm) |
| September 29 | 82.7°F(28.2°C) | 57.7°F(14.3°C) | 69.2°F(20.7°C) | 0.00"(0.0 mm) |
| September 30 | 87.4°F(30.8°C) | 63.5°F(17.5°C) | 70.8°F(21.6°C) | 0.00"(0.0 mm) |