Weather in Castle Hill, CA
Castle Hill, Wednesday, 21 October, 18:13
Overcast. Feels like 61°. High 66°, low 57°.
Monthly outlook for Castle Hill, CA: average high 71.3°, average low 55.6°. That is 0.6° above the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 28 October (77.3°), the coolest 25 October (51.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 72.4° | 71° | +0.8° |
| 31 October – 9 November | 69.4° | 67.9° | +0.8° |
| 10 November – 19 November | at normal | 63.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Saranap (1 mi).
0.07
Castle Hill, Thursday, 22 October
Rain. High 67°, low 53°.
0Castle Hill, Friday, 23 October
Overcast. High 70°, low 52°.
0
Castle Hill, Saturday, 24 October
Clear. High 74°, low 51°.
0Castle Hill, Sunday, 25 October
Clear. High 75°, low 51°.
0Castle Hill, Monday, 26 October
Overcast. High 75°, low 53°.
0Castle Hill, Tuesday, 27 October
Overcast. High 75°, low 52°.
0Castle Hill, Wednesday, 28 October
Clear. High 77°, low 60°.
0
Castle Hill, Thursday, 29 October
Mostly clear. High 74°, low 59°.
0Castle Hill, Friday, 30 October
Clear. High 71°, low 58°.
0Castle Hill, Saturday, 31 October
Overcast. High 67°, low 55°.
0
Castle Hill, Sunday, 1 November
Partly cloudy. High 69°, low 53°.
0.05Castle Hill, Monday, 2 November
Light rain. High 64°, low 59°.
0Castle Hill, Tuesday, 3 November
Overcast. High 74°, low 58°.
0Castle Hill, Wednesday, 4 November
Clear. High 75°, low 60°.
0.35Castle Hill, Thursday, 5 November
Rain. High 68°, low 59°.
0.05Castle Hill, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Castle Hill, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Castle Hill, Sunday, 8 November
Climate normal for this date — 60-year average.
0.08Castle Hill, Monday, 9 November
Climate normal for this date — 60-year average.
0.12Castle Hill, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Castle Hill, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Castle Hill, Thursday, 12 November
Climate normal for this date — 60-year average.
0.13Castle Hill, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Castle Hill, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Castle Hill, Sunday, 15 November
Climate normal for this date — 60-year average.
0.08Castle Hill, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Castle Hill, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Castle Hill, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.05Castle Hill, Thursday, 19 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 Castle Hill, 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 Castle Hill, 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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