Weather in Chapman, CA
Chapman, Monday, 19 October, 06:06
Clear. Feels like 65°. High 85°, low 64°.
Monthly outlook for Chapman, CA: average high 75.2°, average low 61.5°. That is 1.1° below the climate normal for October. Precipitation is expected on 4 days (about 2.9 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 26 October (87.9°), the coolest 23 October (47.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 77.6° | 78° | -0.2° |
| 29 October – 7 November | 71.4° | 75.1° | -2.1° |
| 8 November – 17 November | at normal | 71.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — San Pasqual (1 mi).
0
Chapman, Tuesday, 20 October
Clear. High 82°, low 63°.
0.37
Chapman, Wednesday, 21 October
Rain. High 66°, low 56°.
0.5Chapman, Thursday, 22 October
Heavy rain. High 60°, low 49°.
0.01Chapman, Friday, 23 October
Light rain. High 65°, low 47°.
0Chapman, Saturday, 24 October
Clear. High 71°, low 49°.
0
Chapman, Sunday, 25 October
Overcast. High 87°, low 61°.
0Chapman, Monday, 26 October
Overcast. High 88°, low 71°.
0Chapman, Tuesday, 27 October
Overcast. High 87°, low 73°.
0Chapman, Wednesday, 28 October
Clear. High 85°, low 72°.
0Chapman, Thursday, 29 October
Overcast. High 79°, low 66°.
0Chapman, Friday, 30 October
Overcast. High 72°, low 64°.
0.4Chapman, Saturday, 31 October
Rain. High 73°, low 64°.
1.65Chapman, Sunday, 1 November
Rain. High 65°, low 60°.
0Chapman, Monday, 2 November
Overcast. High 71°, low 63°.
0Chapman, Tuesday, 3 November
Overcast. High 68°, low 63°.
0.02
Chapman, 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.
0.07
Chapman, 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.
0.04Chapman, 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 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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