Weather in Castaic, CA
Castaic, Wednesday, 14 October, 08:23
Clear. Feels like 58°. High 80°, low 51°.
Monthly outlook for Castaic, CA: average high 79°, average low 59.3°. That is 0.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 15 October (86°), the coolest 23 October (51.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 October – 23 October | 76.7° | 78.6° | -1° |
| 24 October – 2 November | 82.6° | 74.9° | +4.3° |
| 3 November – 12 November | at normal | 71.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Santa Clarita (9 mi).
0Castaic, Thursday, 15 October
Clear. High 86°, low 57°.
0Castaic, Friday, 16 October
Clear. High 84°, low 65°.
0Castaic, Saturday, 17 October
Clear. High 83°, low 64°.
0Castaic, Sunday, 18 October
Clear. High 82°, low 58°.
0Castaic, Monday, 19 October
Clear. High 80°, low 55°.
0Castaic, Tuesday, 20 October
Clear. High 77°, low 55°.
0.77
Castaic, Wednesday, 21 October
Rain. High 61°, low 54°.
0.15Castaic, Thursday, 22 October
Light rain. High 60°, low 53°.
0Castaic, Friday, 23 October
Clear. High 74°, low 51°.
0Castaic, Saturday, 24 October
Clear. High 81°, low 60°.
0
Castaic, Sunday, 25 October
Partly cloudy. High 82°, low 65°.
0Castaic, Monday, 26 October
Clear. High 83°, low 63°.
0
Castaic, Tuesday, 27 October
Overcast. High 83°, low 67°.
0Castaic, Wednesday, 28 October
Partly cloudy. High 82°, low 64°.
0Castaic, Thursday, 29 October
Overcast. High 83°, low 66°.
0.05
Castaic, 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.
0.06Castaic, 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.
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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