Weather in Chapman, MT
Chapman, Sunday, 11 October, 02:31
Light snow. Feels like 27°. High 36°, low 28°.
Monthly outlook for Chapman, MT: average high 53.4°, average low 38.3°. That is 0.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 26 October (66.3°), the coolest 13 October (27.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 52.2° | 53.9° | -1° |
| 21 October – 30 October | 55.4° | 49.4° | +3.3° |
| 31 October – 9 November | at normal | 43.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Caldwell (7 mi).
0.37Chapman, Monday, 12 October
Snow. High 33°, low 28°.
0
Chapman, Tuesday, 13 October
Partly cloudy. High 42°, low 27°.
0
Chapman, Wednesday, 14 October
Clear. High 54°, low 29°.
0Chapman, Thursday, 15 October
Clear. High 52°, low 38°.
0Chapman, Friday, 16 October
Clear. High 61°, low 36°.
0
Chapman, Saturday, 17 October
Overcast. High 58°, low 35°.
0Chapman, Sunday, 18 October
Partly cloudy. High 65°, low 53°.
0Chapman, Monday, 19 October
Partly cloudy. High 65°, low 50°.
0Chapman, Tuesday, 20 October
Overcast. High 56°, low 45°.
0Chapman, Wednesday, 21 October
Partly cloudy. High 50°, low 39°.
0Chapman, Thursday, 22 October
Overcast. High 49°, low 40°.
0
Chapman, Friday, 23 October
Mostly clear. High 52°, low 42°.
0Chapman, Saturday, 24 October
Clear. High 52°, low 35°.
0Chapman, Sunday, 25 October
Overcast. High 63°, low 42°.
0Chapman, Monday, 26 October
Clear. High 66°, low 47°.
0.03Chapman, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.02Chapman, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.03Chapman, Thursday, 29 October
Climate normal for this date — 60-year average.
0.02Chapman, Friday, 30 October
Climate normal for this date — 60-year average.
0.03Chapman, Saturday, 31 October
Climate normal for this date — 60-year average.
0.01Chapman, Sunday, 1 November
Climate normal for this date — 60-year average.
0.02Chapman, Monday, 2 November
Climate normal for this date — 60-year average.
0.03Chapman, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Chapman, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.03Chapman, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Chapman, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Chapman, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Chapman, Sunday, 8 November
Climate normal for this date — 60-year average.
0.05Chapman, Monday, 9 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, MT 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, MT 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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