Weather in San Dimas, CA
San Dimas, Thursday, 22 October, 06:41
Overcast. Feels like 58°. High 65°, low 57°.
Monthly outlook for San Dimas, CA: average high 73.6°, average low 61°. That is 1.9° below the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 2 November (81°), the coolest 24 October (49.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 71.4° | 77.6° | -3.4° |
| 1 November – 10 November | 77.2° | 74.9° | +1.3° |
| 11 November – 20 November | at normal | 71.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Covina (4 mi).
0.07
San Dimas, Friday, 23 October
Light rain. High 67°, low 55°.
0.01San Dimas, Saturday, 24 October
Light rain. High 69°, low 49°.
0
San Dimas, Sunday, 25 October
Clear. High 73°, low 55°.
0San Dimas, Monday, 26 October
Overcast. High 74°, low 57°.
0San Dimas, Tuesday, 27 October
Overcast. High 72°, low 58°.
0San Dimas, Wednesday, 28 October
Overcast. High 79°, low 63°.
0San Dimas, Thursday, 29 October
Overcast. High 74°, low 64°.
0
San Dimas, Friday, 30 October
Partly cloudy. High 72°, low 61°.
0San Dimas, Saturday, 31 October
Overcast. High 68°, low 61°.
0San Dimas, Sunday, 1 November
Overcast. High 77°, low 61°.
0San Dimas, Monday, 2 November
Partly cloudy. High 81°, low 68°.
0San Dimas, Tuesday, 3 November
Partly cloudy. High 79°, low 70°.
0San Dimas, Wednesday, 4 November
Clear. High 79°, low 67°.
0.04San Dimas, Thursday, 5 November
Light rain. High 75°, low 67°.
0.01San Dimas, Friday, 6 November
Light rain. High 74°, low 65°.
0.06
San Dimas, Saturday, 7 November
Climate normal for this date — 60-year average.
0.08San Dimas, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04San Dimas, Monday, 9 November
Climate normal for this date — 60-year average.
0.03San Dimas, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.05San Dimas, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.03San Dimas, Thursday, 12 November
Climate normal for this date — 60-year average.
0.03San Dimas, Friday, 13 November
Climate normal for this date — 60-year average.
0.05San Dimas, Saturday, 14 November
Climate normal for this date — 60-year average.
0.08San Dimas, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06San Dimas, Monday, 16 November
Climate normal for this date — 60-year average.
0.04San Dimas, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.05San Dimas, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.05San Dimas, Thursday, 19 November
Climate normal for this date — 60-year average.
0.06San Dimas, Friday, 20 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 San Dimas, 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 San Dimas, 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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