Currently
54°F
in Simi Valley, California, USA
59°F / 54°F
calm
0.11"
Sunday, January 4, 2026 5:21 PM PST
Simi Valley
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Simi Valley, California Climate Summary
Click on the month for hour-by-hour statistics for a typical day.
| Month | High | Low | Average | Precipitation |
| January | 66.4°F (19.1°C) | 47.9°F (8.8°C) | 56.7°F (13.7°C) | 2.38" (60.4 mm) |
| February | 67.9°F (19.9°C) | 46.6°F (8.1°C) | 56.4°F (13.6°C) | 2.59" (65.6 mm) |
| March | 69.2°F (20.7°C) | 47.6°F (8.7°C) | 57.4°F (14.1°C) | 2.84" (72.2 mm) |
| April | 74.1°F (23.4°C) | 50.5°F (10.3°C) | 61.4°F (16.3°C) | 0.57" (14.6 mm) |
| May | 75.1°F (23.9°C) | 52.9°F (11.6°C) | 63.3°F (17.4°C) | 0.29" (7.3 mm) |
| June | 81.2°F (27.3°C) | 57.4°F (14.1°C) | 68.7°F (20.4°C) | 0.02" (0.4 mm) |
| July | 86.6°F (30.3°C) | 61.0°F (16.1°C) | 73.2°F (22.9°C) | 0.08" (2.0 mm) |
| August | 88.6°F (31.4°C) | 61.9°F (16.6°C) | 74.3°F (23.5°C) | 0.27" (6.8 mm) |
| September | 86.6°F (30.3°C) | 60.6°F (15.9°C) | 72.2°F (22.3°C) | 0.13" (3.3 mm) |
| October | 80.9°F (27.2°C) | 56.0°F (13.3°C) | 67.1°F (19.5°C) | 0.36" (9.1 mm) |
| November | 72.6°F (22.6°C) | 51.1°F (10.6°C) | 61.0°F (16.1°C) | 1.05" (26.6 mm) |
| December | 65.8°F (18.8°C) | 47.0°F (8.4°C) | 55.9°F (13.3°C) | 2.98" (75.6 mm) |