Simi Valley and Stevenson Ranch have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Simi Valley | Metric | Stevenson Ranch |
|---|---|---|
| 293 days | Sunny daysclear or partly cloudy skies | 291 days |
| 16 in | Precipitationper year | 13 in |
| 33 days | Wet daysrain or snow per year | 37 days |
| 0 in | Snowfallper year | 1 in |
| 94 days | Hot daysabove 90 °F | 87 days |
| 4 days | Freezing nightsat or below 32 °F | 1 days |
| 63% | Humidityaverage relative | 60% |
| 66 °F | Average temperatureyear round | 66 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Simi Valley high | 67 | 68 | 72 | 76 | 80 | 87 | 93 | 95 | 92 | 83 | 74 | 66 |
| Stevenson Ranch high | 63 | 65 | 70 | 74 | 81 | 87 | 94 | 96 | 91 | 81 | 71 | 62 |
| Simi Valley low | 45 | 45 | 47 | 49 | 54 | 58 | 62 | 63 | 61 | 55 | 48 | 44 |
| Stevenson Ranch low | 47 | 45 | 47 | 49 | 54 | 57 | 63 | 64 | 62 | 56 | 49 | 44 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Simi Valley | 3.6 | 3.8 | 2.6 | 0.9 | 0.5 | 0.1 | 0.1 | 0.0 | 0.2 | 0.8 | 0.8 | 2.3 |
| Stevenson Ranch | 2.8 | 3.2 | 2.2 | 0.8 | 0.4 | 0.1 | 0.1 | 0.0 | 0.2 | 0.6 | 0.7 | 2.0 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Simi Valley | 20 | 18 | 21 | 24 | 24 | 27 | 29 | 30 | 29 | 27 | 24 | 22 |
| Stevenson Ranch | 19 | 17 | 20 | 23 | 25 | 27 | 29 | 30 | 29 | 27 | 24 | 21 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Simi Valley vs another city
- Simi Valley vs Oak Park, CA
- Simi Valley vs Moorpark, CA
- Simi Valley vs Agoura Hills, CA
- Simi Valley vs Thousand Oaks, CA
- Simi Valley vs Westlake Village, CA
- Simi Valley vs Calabasas, CA
- Simi Valley vs New York, NY
- Simi Valley vs Los Angeles, CA
- Simi Valley vs Chicago, IL
- Simi Valley vs Houston, TX
- Simi Valley vs Phoenix, AZ
- Simi Valley vs Philadelphia, PA
Stevenson Ranch vs another city
- Stevenson Ranch vs Santa Clarita, CA
- Stevenson Ranch vs Castaic, CA
- Stevenson Ranch vs San Fernando, CA
- Stevenson Ranch vs Oak Park, CA
- Stevenson Ranch vs Moorpark, CA
- Stevenson Ranch vs New York, NY
- Stevenson Ranch vs Los Angeles, CA
- Stevenson Ranch vs Chicago, IL
- Stevenson Ranch vs Houston, TX
- Stevenson Ranch vs Phoenix, AZ
- Stevenson Ranch vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).