Weather in Great Falls, MT
Great Falls, Thursday, 22 October, 03:23
Clear. Feels like 50°. High 71°, low 42°.
Monthly outlook for Great Falls, MT: average high 49.8°, average low 34.6°. That is 0.8° below the climate normal for October. Precipitation is expected on 4 days (about 1.8 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (71°), the coolest 30 October (23.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 44.3° | 53° | -4.8° |
| 1 November – 10 November | 58.9° | 47° | +6.6° |
| 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).
0.89
Great Falls, Friday, 23 October
Snow. High 46°, low 33°.
0
Great Falls, Saturday, 24 October
Clear. High 48°, low 27°.
0Great Falls, Sunday, 25 October
Clear. High 41°, low 28°.
0
Great Falls, Monday, 26 October
Overcast. High 45°, low 28°.
0.21
Great Falls, Tuesday, 27 October
Rain. High 37°, low 32°.
0.52Great Falls, Wednesday, 28 October
Snow. High 36°, low 30°.
0.22Great Falls, Thursday, 29 October
Snow. High 33°, low 29°.
0Great Falls, Friday, 30 October
Clear. High 40°, low 24°.
0Great Falls, Saturday, 31 October
Overcast. High 46°, low 31°.
0Great Falls, Sunday, 1 November
Clear. High 49°, low 35°.
0Great Falls, Monday, 2 November
Overcast. High 54°, low 38°.
0
Great Falls, Tuesday, 3 November
Mostly clear. High 62°, low 39°.
0Great Falls, Wednesday, 4 November
Overcast. High 62°, low 47°.
0
Great Falls, Thursday, 5 November
Partly cloudy. High 63°, low 45°.
0Great Falls, Friday, 6 November
Overcast. High 63°, low 48°.
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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