Weather in Castaic, CA
Castaic, Sunday, 11 October, 04:29
Overcast. Feels like 64°. High 66°, low 51°.
Monthly outlook for Castaic, CA: average high 80.8°, average low 59.1°. That is 1.3° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 25 October (89.3°), the coolest 13 October (44.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 78° | 79.3° | -0.7° |
| 21 October – 30 October | 85.5° | 75.9° | +5.3° |
| 31 October – 9 November | at normal | 73° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Santa Clarita (9 mi).
0.02
Castaic, Monday, 12 October
Light rain. High 59°, low 47°.
0
Castaic, Tuesday, 13 October
Clear. High 69°, low 45°.
0Castaic, Wednesday, 14 October
Clear. High 77°, low 50°.
0Castaic, Thursday, 15 October
Clear. High 80°, low 55°.
0Castaic, Friday, 16 October
Clear. High 83°, low 63°.
0Castaic, Saturday, 17 October
Clear. High 89°, low 68°.
0Castaic, Sunday, 18 October
Clear. High 89°, low 68°.
0Castaic, Monday, 19 October
Clear. High 86°, low 65°.
0Castaic, Tuesday, 20 October
Clear. High 84°, low 62°.
0Castaic, Wednesday, 21 October
Clear. High 85°, low 61°.
0Castaic, Thursday, 22 October
Clear. High 82°, low 59°.
0Castaic, Friday, 23 October
Clear. High 82°, low 58°.
0Castaic, Saturday, 24 October
Clear. High 88°, low 61°.
0Castaic, Sunday, 25 October
Clear. High 89°, low 66°.
0Castaic, Monday, 26 October
Overcast. High 86°, low 67°.
0.04
Castaic, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.02Castaic, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.01Castaic, Thursday, 29 October
Climate normal for this date — 60-year average.
0.05Castaic, Friday, 30 October
Climate normal for this date — 60-year average.
0.02Castaic, Saturday, 31 October
Climate normal for this date — 60-year average.
0.03Castaic, Sunday, 1 November
Climate normal for this date — 60-year average.
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.
0.06
Castaic, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Castaic, Monday, 9 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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