Weather in Copper Cliff, MT
Copper Cliff, Monday, 19 October, 04:08
Partly cloudy. Feels like 33°. High 63°, low 33°.
Monthly outlook for Copper Cliff, MT: average high 51.5°, average low 30.3°. That is 0.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.6 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 21 October (64.5°), the coolest 28 October (19.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 53.9° | 52.4° | +0.8° |
| 29 October – 7 November | 47.5° | 45.8° | +1° |
| 8 November – 17 November | at normal | 41.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Potomac (8 mi).
0
Copper Cliff, Tuesday, 20 October
Mostly clear. High 63°, low 37°.
0
Copper Cliff, Wednesday, 21 October
Partly cloudy. High 65°, low 37°.
0.02
Copper Cliff, Thursday, 22 October
Light rain. High 64°, low 42°.
0.56Copper Cliff, Friday, 23 October
Rain. High 48°, low 37°.
0.02Copper Cliff, Saturday, 24 October
Light rain. High 48°, low 34°.
0.02Copper Cliff, Sunday, 25 October
Light rain. High 58°, low 28°.
0.03Copper Cliff, Monday, 26 October
Light rain. High 43°, low 33°.
0
Copper Cliff, Tuesday, 27 October
Clear. High 40°, low 21°.
0Copper Cliff, Wednesday, 28 October
Clear. High 48°, low 19°.
0
Copper Cliff, Thursday, 29 October
Overcast. High 55°, low 27°.
0Copper Cliff, Friday, 30 October
Overcast. High 52°, low 33°.
0Copper Cliff, Saturday, 31 October
Overcast. High 49°, low 30°.
0
Copper Cliff, Sunday, 1 November
Light snow. High 45°, low 26°.
0Copper Cliff, Monday, 2 November
Overcast. High 39°, low 24°.
0Copper Cliff, Tuesday, 3 November
Overcast. High 46°, low 23°.
0.07
Copper 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.
0.04Copper Cliff, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Copper Cliff, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Copper Cliff, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Copper Cliff, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Copper Cliff, Saturday, 14 November
Climate normal for this date — 60-year average.
0.02Copper Cliff, Sunday, 15 November
Climate normal for this date — 60-year average.
0.07Copper Cliff, Monday, 16 November
Climate normal for this date — 60-year average.
0.06Copper Cliff, 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 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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