Weather in Chapman, CA
Chapman, Sunday, 18 October, 06:04
Clear. Feels like 67°. High 85°, low 67°.
Monthly outlook for Chapman, CA: average high 78.7°, average low 64.3°. That is 0.7° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 26 October (88.3°), the coolest 23 October (47°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 78.1° | 78.4° | -0.2° |
| 28 October – 6 November | 79.6° | 75.5° | +2.3° |
| 7 November – 16 November | at normal | 71.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — San Pasqual (1 mi).
0
Chapman, Monday, 19 October
Clear. High 84°, low 69°.
0Chapman, Tuesday, 20 October
Clear. High 76°, low 58°.
0.41
Chapman, Wednesday, 21 October
Rain. High 65°, low 54°.
0.18Chapman, Thursday, 22 October
Light rain. High 61°, low 50°.
0Chapman, Friday, 23 October
Clear. High 67°, low 47°.
0Chapman, Saturday, 24 October
Clear. High 84°, low 66°.
0Chapman, Sunday, 25 October
Clear. High 88°, low 69°.
0Chapman, Monday, 26 October
Clear. High 88°, low 73°.
0
Chapman, Tuesday, 27 October
Overcast. High 83°, low 71°.
0
Chapman, Wednesday, 28 October
Partly cloudy. High 81°, low 68°.
0Chapman, Thursday, 29 October
Partly cloudy. High 80°, low 67°.
0Chapman, Friday, 30 October
Clear. High 81°, low 67°.
0Chapman, Saturday, 31 October
Clear. High 81°, low 68°.
0Chapman, Sunday, 1 November
Overcast. High 80°, low 67°.
0Chapman, Monday, 2 November
Overcast. High 75°, low 68°.
0.01
Chapman, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Chapman, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.01Chapman, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Chapman, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Chapman, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07Chapman, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Chapman, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Chapman, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Chapman, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Chapman, Thursday, 12 November
Climate normal for this date — 60-year average.
0.03Chapman, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Chapman, Saturday, 14 November
Climate normal for this date — 60-year average.
0.07Chapman, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Chapman, Monday, 16 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 Chapman, 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 Chapman, 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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