Weather in Chapman, OR
Chapman, Sunday, 18 October, 16:28
Overcast. Feels like 60°. High 62°, low 36°.
Monthly outlook for Chapman, OR: average high 56.5°, average low 36.9°. That is 0.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.3 inches), against a normal of 8 days and 3.3 inches. The warmest day looks like 21 October (67.9°), the coolest 29 October (31.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 56.6° | 57.6° | -0.6° |
| 28 October – 6 November | 56.3° | 53.6° | +1.5° |
| 7 November – 16 November | at normal | 51° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Vernonia (10 mi).
0
Chapman, Monday, 19 October
Partly cloudy. High 58°, low 41°.
0
Chapman, Tuesday, 20 October
Clear. High 64°, low 41°.
0Chapman, Wednesday, 21 October
Clear. High 68°, low 46°.
0.1
Chapman, Thursday, 22 October
Light rain. High 50°, low 41°.
0.06Chapman, Friday, 23 October
Light rain. High 49°, low 37°.
0.13Chapman, Saturday, 24 October
Light rain. High 53°, low 37°.
0.04Chapman, Sunday, 25 October
Light rain. High 53°, low 39°.
0Chapman, Monday, 26 October
Partly cloudy. High 55°, low 36°.
0
Chapman, Tuesday, 27 October
Mostly clear. High 54°, low 34°.
0Chapman, Wednesday, 28 October
Mostly clear. High 48°, low 33°.
0Chapman, Thursday, 29 October
Mostly clear. High 55°, low 31°.
0Chapman, Friday, 30 October
Clear. High 56°, low 32°.
0Chapman, Saturday, 31 October
Clear. High 58°, low 34°.
0Chapman, Sunday, 1 November
Clear. High 60°, low 36°.
0Chapman, Monday, 2 November
Overcast. High 60°, low 36°.
0.22Chapman, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.29Chapman, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.24Chapman, Thursday, 5 November
Climate normal for this date — 60-year average.
0.31Chapman, Friday, 6 November
Climate normal for this date — 60-year average.
0.26Chapman, Saturday, 7 November
Climate normal for this date — 60-year average.
0.21Chapman, Sunday, 8 November
Climate normal for this date — 60-year average.
0.22Chapman, Monday, 9 November
Climate normal for this date — 60-year average.
0.2Chapman, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.26Chapman, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.25Chapman, Thursday, 12 November
Climate normal for this date — 60-year average.
0.31Chapman, Friday, 13 November
Climate normal for this date — 60-year average.
0.23
Chapman, Saturday, 14 November
Climate normal for this date — 60-year average.
0.26Chapman, Sunday, 15 November
Climate normal for this date — 60-year average.
0.22Chapman, 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, OR 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, OR 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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