Weather in Alta Loma, CA
Alta Loma, Wednesday, 11 November, 03:47
Clear. Feels like 60°. High 84°, low 59°.
Monthly outlook for Alta Loma, CA: average high 67.2°, average low 54.3°. That is 0.5° below the climate normal for November. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 2 days and 1.0 inches. The warmest day looks like 11 November (83.8°), the coolest 15 November (45.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 November – 20 November | 65.4° | 69° | -2° |
| 21 November – 30 November | 70.1° | 65.6° | +2.5° |
| 1 December – 10 December | at normal | 64.1° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Rancho Cucamonga (2 mi).
0
Alta Loma, Thursday, 12 November
Clear. High 76°, low 54°.
0.09
Alta Loma, Friday, 13 November
Light rain. High 59°, low 48°.
0.62Alta Loma, Saturday, 14 November
Heavy rain. High 56°, low 46°.
0Alta Loma, Sunday, 15 November
Clear. High 59°, low 45°.
0.12Alta Loma, Monday, 16 November
Light rain. High 58°, low 49°.
0.11Alta Loma, Tuesday, 17 November
Light rain. High 63°, low 54°.
0
Alta Loma, Wednesday, 18 November
Overcast. High 64°, low 53°.
0Alta Loma, Thursday, 19 November
Overcast. High 65°, low 55°.
0
Alta Loma, Friday, 20 November
Partly cloudy. High 71°, low 55°.
0Alta Loma, Saturday, 21 November
Clear. High 72°, low 58°.
0Alta Loma, Sunday, 22 November
Clear. High 72°, low 58°.
0Alta Loma, Monday, 23 November
Clear. High 72°, low 58°.
0Alta Loma, Tuesday, 24 November
Overcast. High 70°, low 60°.
0Alta Loma, Wednesday, 25 November
Overcast. High 67°, low 58°.
0Alta Loma, Thursday, 26 November
Overcast. High 67°, low 59°.
0.05
Alta Loma, Friday, 27 November
Climate normal for this date — 60-year average.
0.11Alta Loma, Saturday, 28 November
Climate normal for this date — 60-year average.
0.15Alta Loma, Sunday, 29 November
Climate normal for this date — 60-year average.
0.09Alta Loma, Monday, 30 November
Climate normal for this date — 60-year average.
0.03Alta Loma, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.03Alta Loma, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09Alta Loma, Thursday, 3 December
Climate normal for this date — 60-year average.
0.11Alta Loma, Friday, 4 December
Climate normal for this date — 60-year average.
0.08Alta Loma, Saturday, 5 December
Climate normal for this date — 60-year average.
0.11Alta Loma, Sunday, 6 December
Climate normal for this date — 60-year average.
0.13Alta Loma, Monday, 7 December
Climate normal for this date — 60-year average.
0.05Alta Loma, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.04Alta Loma, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.04Alta Loma, Thursday, 10 December
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 Alta Loma, 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 Alta Loma, 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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