Currently
N/A°F
in Simi Valley, California, USA
N/A°F / N/A°F
N/A
N/A
Sunday, April 27, 2025 6:26 AM PDT
Simi Valley
Currently
Forecast
Past Weather
Climate
Last 36 Hours
Weather News
Features
F.A.Q.
Contact Us
Use °C/Metric
RSS Feed
Follow UsWeatherCurrents
Local Roundup
Mobile Access
On Your Site
RSS Feed
Follow UsWeatherCurrents
Local Roundup
Mobile Access
On Your Site
Simi Valley, California Weather Summary
December,
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: | 83.8°F (28.8°C) | at 1:48PM Dec 13 | 72.4°F (22.4°C) | 65°F (19°C) |
| Low Temperature: | 39.0°F (3.9°C) | at 2:46AM Dec 23 | 50.5°F (10.3°C) | 47°F (8°C) |
| Month Average: | 60.3°F (15.7°C) | for 31 days | ||
| Normal Average: | 56°F (13°C) | |||
| Precipitation: | 0.10" (2.5 mm) | |||
| Date | High | Low | Average | Precipitation |
| December 1 | 75.3°F(24.1°C) | 47.0°F(8.4°C) | 59.2°F(15.1°C) | 0.00"(0.0 mm) |
| December 2 | 75.6°F(24.2°C) | 49.6°F(9.8°C) | 60.1°F(15.6°C) | 0.00"(0.0 mm) |
| December 3 | 68.0°F(20.0°C) | 49.5°F(9.7°C) | 56.5°F(13.6°C) | 0.00"(0.0 mm) |
| December 4 | 62.3°F(16.8°C) | 53.3°F(11.8°C) | 57.0°F(13.9°C) | 0.03"(0.7 mm) |
| December 5 | 63.0°F(17.2°C) | 51.9°F(11.0°C) | 57.3°F(14.0°C) | 0.04"(1.0 mm) |
| December 6 | 72.8°F(22.7°C) | 54.9°F(12.7°C) | 63.3°F(17.4°C) | 0.00"(0.0 mm) |
| December 7 | 72.0°F(22.2°C) | 57.4°F(14.1°C) | 64.2°F(17.9°C) | 0.00"(0.0 mm) |
| December 8 | 77.3°F(25.1°C) | 56.6°F(13.7°C) | 67.1°F(19.5°C) | 0.00"(0.0 mm) |
| December 9 | 77.1°F(25.0°C) | 66.9°F(19.4°C) | 70.3°F(21.3°C) | 0.00"(0.0 mm) |
| December 10 | 75.4°F(24.1°C) | 65.9°F(18.8°C) | 70.1°F(21.2°C) | 0.00"(0.0 mm) |
| December 11 | 79.2°F(26.2°C) | 67.0°F(19.4°C) | 71.0°F(21.7°C) | 0.00"(0.0 mm) |
| December 12 | 78.3°F(25.7°C) | 65.1°F(18.4°C) | 70.6°F(21.5°C) | 0.01"(0.2 mm) |
| December 13 | 83.8°F(28.8°C) | 51.9°F(11.1°C) | 69.9°F(21.1°C) | 0.00"(0.0 mm) |
| December 14 | 78.7°F(25.9°C) | 49.3°F(9.6°C) | 66.8°F(19.4°C) | 0.01"(0.2 mm) |
| December 15 | 79.5°F(26.4°C) | 53.8°F(12.1°C) | 67.0°F(19.4°C) | 0.00"(0.0 mm) |
| December 16 | 69.2°F(20.6°C) | 48.2°F(9.0°C) | 58.0°F(14.5°C) | 0.00"(0.0 mm) |
| December 17 | 63.4°F(17.4°C) | 51.3°F(10.7°C) | 57.0°F(13.9°C) | 0.01"(0.2 mm) |
| December 18 | 71.7°F(22.1°C) | 46.4°F(8.0°C) | 57.8°F(14.3°C) | 0.00"(0.0 mm) |
| December 19 | 68.1°F(20.1°C) | 44.0°F(6.7°C) | 53.5°F(11.9°C) | 0.00"(0.0 mm) |
| December 20 | 58.1°F(14.5°C) | 40.1°F(4.5°C) | 48.5°F(9.1°C) | 0.00"(0.0 mm) |
| December 21 | 59.5°F(15.3°C) | 40.7°F(4.8°C) | 50.5°F(10.3°C) | 0.00"(0.0 mm) |
| December 22 | 66.4°F(19.1°C) | 41.4°F(5.2°C) | 52.9°F(11.6°C) | 0.00"(0.0 mm) |
| December 23 | 66.9°F(19.4°C) | 39.0°F(3.9°C) | 51.6°F(10.9°C) | 0.00"(0.0 mm) |
| December 24 | 74.4°F(23.5°C) | 45.6°F(7.6°C) | 55.5°F(13.1°C) | 0.00"(0.0 mm) |
| December 25 | 69.8°F(21.0°C) | 43.7°F(6.5°C) | 54.9°F(12.7°C) | 0.00"(0.0 mm) |
| December 26 | 69.7°F(20.9°C) | 45.4°F(7.5°C) | 54.8°F(12.7°C) | 0.00"(0.0 mm) |
| December 27 | 78.3°F(25.7°C) | 46.9°F(8.3°C) | 59.8°F(15.4°C) | 0.00"(0.0 mm) |
| December 28 | 81.8°F(27.7°C) | 48.8°F(9.3°C) | 67.0°F(19.5°C) | 0.00"(0.0 mm) |
| December 29 | 82.6°F(28.1°C) | 50.9°F(10.5°C) | 63.6°F(17.6°C) | 0.00"(0.0 mm) |
| December 30 | 73.8°F(23.2°C) | 47.3°F(8.5°C) | 58.1°F(14.5°C) | 0.00"(0.0 mm) |
| December 31 | 71.8°F(22.1°C) | 46.1°F(7.8°C) | 55.8°F(13.2°C) | 0.00"(0.0 mm) |