Weather in San Dimas, CA
San Dimas, Monday, 19 October, 20:11
Clear. Feels like 72°. High 83°, low 60°.
Monthly outlook for San Dimas, CA: average high 76.6°, average low 61.3°. That is 0.7° below the climate normal for October. Precipitation is expected on 3 days (about 1.8 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 26 October (88.6°), the coolest 23 October (49.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 78.3° | 78.7° | -0.2° |
| 29 October – 7 November | 73.7° | 75.7° | -1.1° |
| 8 November – 17 November | at normal | 72.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Covina (4 mi).
0
San Dimas, Tuesday, 20 October
Clear. High 82°, low 61°.
0.21
San Dimas, Wednesday, 21 October
Rain. High 76°, low 59°.
1.56San Dimas, Thursday, 22 October
Heavy rain. High 64°, low 53°.
0.06San Dimas, Friday, 23 October
Light rain. High 62°, low 50°.
0San Dimas, Saturday, 24 October
Clear. High 70°, low 51°.
0
San Dimas, Sunday, 25 October
Mostly clear. High 82°, low 53°.
0San Dimas, Monday, 26 October
Mostly clear. High 89°, low 71°.
0
San Dimas, Tuesday, 27 October
Overcast. High 88°, low 72°.
0San Dimas, Wednesday, 28 October
Clear. High 87°, low 74°.
0San Dimas, Thursday, 29 October
Overcast. High 78°, low 67°.
0
San Dimas, Friday, 30 October
Partly cloudy. High 73°, low 64°.
0San Dimas, Saturday, 31 October
Overcast. High 64°, low 60°.
0San Dimas, Sunday, 1 November
Clear. High 74°, low 59°.
0San Dimas, Monday, 2 November
Mostly clear. High 80°, low 65°.
0San Dimas, Tuesday, 3 November
Overcast. High 73°, low 64°.
0.02San Dimas, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.01San Dimas, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02San Dimas, Friday, 6 November
Climate normal for this date — 60-year average.
0.06San 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.
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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