Weather in Great Falls, MT
Great Falls, Thursday, 22 October, 14:33
Clear. Feels like 73°. High 74°, low 39°.
Monthly outlook for Great Falls, MT: average high 49.4°, average low 31.1°. That is 1.1° below the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (73.9°), the coolest 30 October (25.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 46.5° | 53° | -3.6° |
| 1 November – 10 November | 54.2° | 47° | +4° |
| 11 November – 20 November | at normal | 43.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Ulm (12 mi).
0.71
Great Falls, Friday, 23 October
Snow. High 51°, low 31°.
0Great Falls, Saturday, 24 October
Clear. High 48°, low 26°.
0
Great Falls, Sunday, 25 October
Overcast. High 42°, low 26°.
0Great Falls, Monday, 26 October
Clear. High 46°, low 28°.
0.25Great Falls, Tuesday, 27 October
Snow. High 38°, low 33°.
0.19Great Falls, Wednesday, 28 October
Snow. High 37°, low 31°.
0.07Great Falls, Thursday, 29 October
Light snow. High 37°, low 29°.
0Great Falls, Friday, 30 October
Clear. High 43°, low 25°.
0Great Falls, Saturday, 31 October
Clear. High 49°, low 29°.
0Great Falls, Sunday, 1 November
Clear. High 53°, low 31°.
0
Great Falls, Monday, 2 November
Partly cloudy. High 48°, low 32°.
0
Great Falls, Tuesday, 3 November
Mostly clear. High 47°, low 31°.
0Great Falls, Wednesday, 4 November
Clear. High 58°, low 32°.
0Great Falls, Thursday, 5 November
Clear. High 59°, low 36°.
0Great Falls, Friday, 6 November
Clear. High 59°, low 37°.
0.02Great Falls, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Great Falls, Sunday, 8 November
Climate normal for this date — 60-year average.
0.05Great Falls, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Great Falls, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.03Great Falls, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Great Falls, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Great Falls, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Great Falls, Saturday, 14 November
Climate normal for this date — 60-year average.
0.01Great Falls, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Great Falls, Monday, 16 November
Climate normal for this date — 60-year average.
0.04Great Falls, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.04Great Falls, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.04Great Falls, Thursday, 19 November
Climate normal for this date — 60-year average.
0.02Great Falls, Friday, 20 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 Great Falls, 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 Great Falls, 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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