Weather in Copper Cliff, MT
Copper Cliff, Sunday, 11 October, 13:34
Snow. Feels like 19°. High 33°, low 27°.
Monthly outlook for Copper Cliff, MT: average high 53.6°, average low 32.7°. That is 0.5° below the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 16 October (64.6°), the coolest 12 October (22.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 52.7° | 55.8° | -1.7° |
| 21 October – 30 October | 55.1° | 50.6° | +2.5° |
| 31 October – 9 November | at normal | 44.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Potomac (8 mi).
0.08Copper Cliff, Monday, 12 October
Snow. High 41°, low 22°.
0
Copper Cliff, Tuesday, 13 October
Clear. High 48°, low 27°.
0
Copper Cliff, Wednesday, 14 October
Partly cloudy. High 52°, low 30°.
0Copper Cliff, Thursday, 15 October
Clear. High 60°, low 33°.
0Copper Cliff, Friday, 16 October
Clear. High 65°, low 35°.
0
Copper Cliff, Saturday, 17 October
Overcast. High 64°, low 39°.
0Copper Cliff, Sunday, 18 October
Overcast. High 59°, low 39°.
0Copper Cliff, Monday, 19 October
Overcast. High 58°, low 41°.
0Copper Cliff, Tuesday, 20 October
Partly cloudy. High 49°, low 35°.
0Copper Cliff, Wednesday, 21 October
Overcast. High 49°, low 33°.
0Copper Cliff, Thursday, 22 October
Clear. High 53°, low 30°.
0Copper Cliff, Friday, 23 October
Overcast. High 58°, low 33°.
0Copper Cliff, Saturday, 24 October
Overcast. High 55°, low 33°.
0
Copper Cliff, Sunday, 25 October
Mostly clear. High 56°, low 31°.
0Copper Cliff, Monday, 26 October
Overcast. High 59°, low 34°.
0.06Copper Cliff, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.07Copper Cliff, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.05
Copper Cliff, Thursday, 29 October
Climate normal for this date — 60-year average.
0.04Copper Cliff, Friday, 30 October
Climate normal for this date — 60-year average.
0.07Copper Cliff, Saturday, 31 October
Climate normal for this date — 60-year average.
0.08Copper Cliff, Sunday, 1 November
Climate normal for this date — 60-year average.
0.07Copper Cliff, Monday, 2 November
Climate normal for this date — 60-year average.
0.03Copper Cliff, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.07Copper Cliff, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.07Copper Cliff, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Copper Cliff, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Copper Cliff, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Copper Cliff, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Copper Cliff, 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 Copper Cliff, 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 Copper Cliff, 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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