Weather in Great Falls, MT
Great Falls, Thursday, 22 October, 10:42
Clear. Feels like 57°. High 72°, low 40°.
Monthly outlook for Great Falls, MT: average high 50.8°, average low 32.7°. That is 0.3° below the climate normal for October. Precipitation is expected on 3 days (about 1.8 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (71.6°), the coolest 29 October (16.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 45.3° | 53° | -4.3° |
| 1 November – 10 November | 60.1° | 47° | +7.3° |
| 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).
0.72
Great Falls, Friday, 23 October
Snow. High 51°, low 30°.
0Great Falls, Saturday, 24 October
Clear. High 47°, low 27°.
0
Great Falls, Sunday, 25 October
Overcast. High 41°, low 27°.
0Great Falls, Monday, 26 October
Overcast. High 44°, low 27°.
0.26Great Falls, Tuesday, 27 October
Snow. High 39°, low 31°.
0.79Great Falls, Wednesday, 28 October
Snow. High 35°, low 21°.
0Great Falls, Thursday, 29 October
Clear. High 35°, low 16°.
0Great Falls, Friday, 30 October
Overcast. High 43°, low 26°.
0
Great Falls, Saturday, 31 October
Partly cloudy. High 46°, low 35°.
0Great Falls, Sunday, 1 November
Overcast. High 50°, low 32°.
0Great Falls, Monday, 2 November
Partly cloudy. High 56°, low 39°.
0Great Falls, Tuesday, 3 November
Clear. High 63°, low 40°.
0Great Falls, Wednesday, 4 November
Overcast. High 61°, low 42°.
0Great Falls, Thursday, 5 November
Overcast. High 64°, low 43°.
0Great Falls, Friday, 6 November
Overcast. High 67°, low 47°.
0.02
Great 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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