Weather in Montclair, CA
Montclair, Saturday, 17 October, 08:03
Overcast. Feels like 74°. High 87°, low 75°.
Monthly outlook for Montclair, CA: average high 75.4°, average low 63.6°. That is 1° below the climate normal for October. Precipitation is expected on 4 days (about 1.6 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 18 October (87.2°), the coolest 1 November (56.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 78.3° | 78.5° | -0.1° |
| 27 October – 5 November | 70.6° | 75.3° | -2.6° |
| 6 November – 15 November | at normal | 71.7° | — |
October records over 66 years
0
Montclair, Sunday, 18 October
Clear. High 87°, low 72°.
0Montclair, Monday, 19 October
Clear. High 83°, low 64°.
0Montclair, Tuesday, 20 October
Clear. High 81°, low 62°.
0.44
Montclair, Wednesday, 21 October
Rain. High 71°, low 61°.
0.35Montclair, Thursday, 22 October
Rain. High 68°, low 57°.
0
Montclair, Friday, 23 October
Mostly clear. High 72°, low 58°.
0Montclair, Saturday, 24 October
Clear. High 80°, low 64°.
0
Montclair, Sunday, 25 October
Partly cloudy. High 76°, low 66°.
0Montclair, Monday, 26 October
Clear. High 79°, low 65°.
0Montclair, Tuesday, 27 October
Clear. High 80°, low 69°.
0Montclair, Wednesday, 28 October
Overcast. High 75°, low 66°.
0.04Montclair, Thursday, 29 October
Light rain. High 68°, low 62°.
0Montclair, Friday, 30 October
Overcast. High 71°, low 59°.
0Montclair, Saturday, 31 October
Overcast. High 69°, low 61°.
0.78Montclair, Sunday, 1 November
Rain. High 61°, low 56°.
0.02Montclair, Monday, 2 November
Climate normal for this date — 60-year average.
0Montclair, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03Montclair, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.01Montclair, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Montclair, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Montclair, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09Montclair, Sunday, 8 November
Climate normal for this date — 60-year average.
0.05Montclair, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Montclair, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Montclair, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Montclair, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Montclair, Friday, 13 November
Climate normal for this date — 60-year average.
0.04Montclair, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Montclair, Sunday, 15 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 Montclair, 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 Montclair, 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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