Castaic and San Fernando have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Castaic | Metric | San Fernando |
|---|---|---|
| 288 days | Sunny daysclear or partly cloudy skies | 293 days |
| 15 in | Precipitationper year | 15 in |
| 42 days | Wet daysrain or snow per year | 35 days |
| 7 in | Snowfallper year | 0 in |
| 86 days | Hot daysabove 90 °F | 70 days |
| 1 days | Freezing nightsat or below 32 °F | 0 days |
| 57% | Humidityaverage relative | 58% |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castaic high | 64 | 65 | 71 | 74 | 80 | 87 | 94 | 95 | 91 | 81 | 72 | 63 |
| San Fernando high | 67 | 68 | 71 | 74 | 78 | 83 | 90 | 92 | 89 | 82 | 74 | 67 |
| Castaic low | 47 | 45 | 47 | 49 | 54 | 57 | 63 | 64 | 62 | 56 | 49 | 44 |
| San Fernando low | 46 | 46 | 49 | 52 | 56 | 60 | 64 | 65 | 62 | 56 | 50 | 45 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castaic | 3.2 | 3.7 | 2.6 | 1.0 | 0.5 | 0.1 | 0.1 | 0.0 | 0.2 | 0.7 | 0.8 | 2.2 |
| San Fernando | 3.5 | 3.8 | 2.6 | 0.9 | 0.4 | 0.1 | 0.1 | 0.0 | 0.1 | 0.7 | 0.8 | 2.3 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castaic | 19 | 17 | 20 | 22 | 24 | 27 | 29 | 30 | 28 | 27 | 24 | 21 |
| San Fernando | 20 | 17 | 20 | 23 | 25 | 27 | 29 | 30 | 29 | 27 | 24 | 22 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Castaic vs another city
- Castaic vs Stevenson Ranch, CA
- Castaic vs Santa Clarita, CA
- Castaic vs Simi Valley, CA
- Castaic vs Fillmore, CA
- Castaic vs Moorpark, CA
- Castaic vs New York, NY
- Castaic vs Los Angeles, CA
- Castaic vs Chicago, IL
- Castaic vs Houston, TX
- Castaic vs Phoenix, AZ
- Castaic vs Philadelphia, PA
San Fernando vs another city
- San Fernando vs Burbank, CA
- San Fernando vs Santa Clarita, CA
- San Fernando vs Stevenson Ranch, CA
- San Fernando vs La Crescenta-Montrose, CA
- San Fernando vs Glendale, CA
- San Fernando vs West Hollywood, CA
- San Fernando vs New York, NY
- San Fernando vs Los Angeles, CA
- San Fernando vs Chicago, IL
- San Fernando vs Houston, TX
- San Fernando vs Phoenix, AZ
- San Fernando 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).