Weather in Potomac, MT
Potomac, Wednesday, 14 October, 21:56
Clear. Feels like 40°. High 54°, low 31°.
Monthly outlook for Potomac, MT: average high 52.7°, average low 32°. That is 0.3° below the climate normal for October. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 17 October (63°), the coolest 25 October (20.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 October – 23 October | 54.9° | 55.1° | -0.1° |
| 24 October – 2 November | 49° | 48.5° | +0.3° |
| 3 November – 12 November | at normal | 43.4° | — |
October records over 66 years
0
Potomac, Thursday, 15 October
Clear. High 51°, low 32°.
0
Potomac, Friday, 16 October
Overcast. High 59°, low 32°.
0Potomac, Saturday, 17 October
Overcast. High 63°, low 34°.
0Potomac, Sunday, 18 October
Clear. High 58°, low 34°.
0Potomac, Monday, 19 October
Overcast. High 60°, low 37°.
0Potomac, Tuesday, 20 October
Overcast. High 57°, low 39°.
0Potomac, Wednesday, 21 October
Overcast. High 59°, low 38°.
0Potomac, Thursday, 22 October
Overcast. High 47°, low 37°.
0.06
Potomac, Friday, 23 October
Snow. High 42°, low 30°.
0.24Potomac, Saturday, 24 October
Snow. High 40°, low 26°.
0Potomac, Sunday, 25 October
Overcast. High 45°, low 21°.
0Potomac, Monday, 26 October
Overcast. High 48°, low 26°.
0Potomac, Tuesday, 27 October
Overcast. High 52°, low 27°.
0.09
Potomac, Wednesday, 28 October
Light rain. High 52°, low 37°.
0Potomac, Thursday, 29 October
Overcast. High 57°, low 31°.
0.04
Potomac, Friday, 30 October
Climate normal for this date — 60-year average.
0.07Potomac, Saturday, 31 October
Climate normal for this date — 60-year average.
0.08Potomac, Sunday, 1 November
Climate normal for this date — 60-year average.
0.07
Potomac, Monday, 2 November
Climate normal for this date — 60-year average.
0.03Potomac, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.07Potomac, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.07Potomac, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Potomac, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Potomac, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Potomac, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Potomac, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Potomac, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Potomac, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Potomac, Thursday, 12 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 Potomac, 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 Potomac, 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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