Weather in Castaic, CA
Castaic, Saturday, 17 October, 06:38
Overcast. Feels like 65°. High 87°, low 67°.
Monthly outlook for Castaic, CA: average high 72.4°, average low 54.5°. That is 2.2° below the climate normal for October. Precipitation is expected on 2 days (about 1.1 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 17 October (86.7°), the coolest 30 October (47.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 75.1° | 78° | -1.6° |
| 27 October – 5 November | 67.9° | 74.1° | -3.5° |
| 6 November – 15 November | at normal | 70.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Santa Clarita (9 mi).
0
Castaic, Sunday, 18 October
Clear. High 86°, low 65°.
0Castaic, Monday, 19 October
Clear. High 81°, low 54°.
0Castaic, Tuesday, 20 October
Clear. High 75°, low 53°.
0.5
Castaic, Wednesday, 21 October
Rain. High 61°, low 50°.
0.03Castaic, Thursday, 22 October
Light rain. High 66°, low 47°.
0Castaic, Friday, 23 October
Clear. High 69°, low 52°.
0
Castaic, Saturday, 24 October
Mostly clear. High 78°, low 55°.
0Castaic, Sunday, 25 October
Overcast. High 74°, low 57°.
0Castaic, Monday, 26 October
Clear. High 75°, low 54°.
0
Castaic, Tuesday, 27 October
Partly cloudy. High 79°, low 58°.
0Castaic, Wednesday, 28 October
Overcast. High 71°, low 60°.
0Castaic, Thursday, 29 October
Overcast. High 70°, low 53°.
0Castaic, Friday, 30 October
Partly cloudy. High 65°, low 47°.
0Castaic, Saturday, 31 October
Overcast. High 66°, low 50°.
0.56Castaic, Sunday, 1 November
Rain. High 56°, low 51°.
0.01Castaic, Monday, 2 November
Climate normal for this date — 60-year average.
0Castaic, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Castaic, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.01Castaic, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Castaic, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Castaic, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Castaic, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Castaic, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Castaic, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.04Castaic, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Castaic, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Castaic, Friday, 13 November
Climate normal for this date — 60-year average.
0.04Castaic, Saturday, 14 November
Climate normal for this date — 60-year average.
0.05Castaic, Sunday, 15 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Castaic, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Castaic, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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