Weather in San Dimas, CA
San Dimas, Saturday, 31 October, 02:08
Overcast. Feels like 57°. High 69°, low 57°.
Monthly outlook for San Dimas, CA: average high 74.6°, average low 60.5°. That is 0.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 2 days and 0.6 inches. The warmest day looks like 8 November (85.4°), the coolest 2 November (47.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 74° | 75.2° | -0.7° |
| 10 November – 19 November | 75.7° | 71.9° | +2.1° |
| 20 November – 29 November | at normal | 68.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Covina (4 mi).
0.34
San Dimas, Sunday, 1 November
Rain. High 67°, low 51°.
0
San Dimas, Monday, 2 November
Mostly clear. High 66°, low 48°.
0
San Dimas, Tuesday, 3 November
Clear. High 72°, low 53°.
0San Dimas, Wednesday, 4 November
Clear. High 67°, low 56°.
0San Dimas, Thursday, 5 November
Overcast. High 67°, low 51°.
0San Dimas, Friday, 6 November
Mostly clear. High 78°, low 63°.
0San Dimas, Saturday, 7 November
Clear. High 84°, low 67°.
0
San Dimas, Sunday, 8 November
Partly cloudy. High 85°, low 69°.
0San Dimas, Monday, 9 November
Overcast. High 83°, low 71°.
0San Dimas, Tuesday, 10 November
Overcast. High 76°, low 66°.
0.12San Dimas, Wednesday, 11 November
Light rain. High 68°, low 61°.
0San Dimas, Thursday, 12 November
Clear. High 74°, low 60°.
0San Dimas, Friday, 13 November
Overcast. High 78°, low 63°.
0San Dimas, Saturday, 14 November
Overcast. High 79°, low 66°.
0San Dimas, Sunday, 15 November
Overcast. High 79°, low 67°.
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.
0.1San Dimas, Saturday, 21 November
Climate normal for this date — 60-year average.
0.06San Dimas, Sunday, 22 November
Climate normal for this date — 60-year average.
0.01San Dimas, Monday, 23 November
Climate normal for this date — 60-year average.
0.04San Dimas, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.06San Dimas, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.06San Dimas, Thursday, 26 November
Climate normal for this date — 60-year average.
0.03San Dimas, Friday, 27 November
Climate normal for this date — 60-year average.
0.07San Dimas, Saturday, 28 November
Climate normal for this date — 60-year average.
0.11San Dimas, Sunday, 29 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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