Simi Valley, CA Weather
Simi Valley, CA climate is warm during summer when temperatures tend to be in the 70's and cool during winter when temperatures tend to be in the 50's.
The warmest month of the year is August with an average maximum temperature of 96.00 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 38.30 degrees Fahrenheit.
Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 38 degrees Fahrenheit, and moderate during winter with an average difference of 29 degrees Fahrenheit.
The annual average precipitation at Simi Valley is 18.39 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is February with an average rainfall of 4.66 Inches.
Weather Data
Current Conditions
|
Fair, 46°F | Humidity: 85% | Dewpoint: 41°F |
| Wind Speed: S 3.5 MPH (3 KT) | Heat Index: 46°F | ||
| Barometer: 29.96 in. | Wind Chill: 46°F |
Weather Forecast
 | Tonight: Mostly cloudy with a 20 percent chance of showers after midnight. Lows in the upper 30s and 40s. | |
 | Hi: 65°F | Saturday: Partly cloudy in the morning then becoming mostly sunny. Highs in the 60s. |
 | Hi: 66°F | Sunday: Sunny. Highs in the mid 60s to lower 70s. |
| Lo: 40°F | ||
| Hi: 69°F | Monday: Clear. Breezy at Times. Highs in the upper 60s and 70s. Lows in the upper 30s to mid 40s except mid 50s in the foothills. |
| Lo: 40°F | ||
| Hi: 76°F | Tuesday: Clear and breezy. Highs in the 70s to lower 80s. Lows in the upper 30s to mid 40s except mid 50s in the foothills. |
| Lo: 40°F | ||
| Hi: 76°F | Wednesday: Clear and breezy. Highs in the 70s to lower 80s. Lows in the upper 30s to mid 40s except mid 50s in the foothills. |
| Lo: 40°F | ||
| Hi: 76°F | Thursday: Clear and breezy. Highs in the 70s to lower 80s. Lows in the upper 30s to mid 40s except mid 50s in the foothills. |
| Lo: 40°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waxing Crescent Moon | Civil Twilight: 6:06 AM PST |
Sunrise: 6:33 AM PST |
| Sunset: 4:48 PM PST |
Civil Twilight: 5:14 PM PST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 67.9 | 69.9 | 72.0 | 77.7 | 81.3 | 88.8 | 95.0 | 96.0 | 91.7 | 84.4 | 74.7 | 68.8 | 80.7 |
| Mean °F | 53.7 | 55.4 | 57.2 | 61.3 | 65.2 | 71.0 | 76.0 | 76.8 | 73.5 | 66.8 | 58.2 | 53.6 | 64.1 |
| Min °F | 39.5 | 40.9 | 42.3 | 44.8 | 49.1 | 53.2 | 56.9 | 57.6 | 55.2 | 49.2 | 41.7 | 38.3 | 47.4 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 4.07 | 4.66 | 3.56 | 0.87 | 0.34 | 0.03 | 0.02 | 0.14 | 0.26 | 0.55 | 1.43 | 2.46 | 18.39 |
