Weather in Potomac, MT
Potomac, Saturday, 10 October, 00:56
Overcast. Feels like 46°. High 48°, low 29°.
Monthly outlook for Potomac, MT: average high 48.4°, average low 30.8°. That is 3.7° below the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 17 October (61.2°), the coolest 11 October (22.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 48.5° | 56.1° | -4.2° |
| 20 October – 29 October | 48.1° | 51.5° | -1.9° |
| 30 October – 8 November | at normal | 45.3° | — |
October records over 66 years
0.2
Potomac, Sunday, 11 October
Snow. High 36°, low 23°.
0.09Potomac, Monday, 12 October
Light snow. High 39°, low 23°.
0
Potomac, Tuesday, 13 October
Clear. High 45°, low 23°.
0Potomac, Wednesday, 14 October
Clear. High 50°, low 29°.
0.08
Potomac, Thursday, 15 October
Light rain. High 49°, low 32°.
0Potomac, Friday, 16 October
Overcast. High 49°, low 31°.
0Potomac, Saturday, 17 October
Overcast. High 61°, low 33°.
0Potomac, Sunday, 18 October
Overcast. High 58°, low 38°.
0.02Potomac, Monday, 19 October
Light rain. High 49°, low 41°.
0.12Potomac, Tuesday, 20 October
Snow. High 43°, low 37°.
0Potomac, Wednesday, 21 October
Overcast. High 52°, low 30°.
0.02Potomac, Thursday, 22 October
Light rain. High 45°, low 32°.
0.01Potomac, Friday, 23 October
Snow. High 46°, low 31°.
0Potomac, Saturday, 24 October
Overcast. High 51°, low 29°.
0Potomac, Sunday, 25 October
Clear. High 50°, low 32°.
0.07
Potomac, Monday, 26 October
Climate normal for this date — 60-year average.
0.06
Potomac, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.07Potomac, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.05Potomac, Thursday, 29 October
Climate normal for this date — 60-year average.
0.04Potomac, 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.
0.07Potomac, 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.
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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