Weather in Shelby, MT
Shelby, Wednesday, 21 October, 05:12
Partly cloudy. Feels like 33°. High 67°, low 35°.
Monthly outlook for Shelby, MT: average high 43.9°, average low 27.6°. That is 3.3° below the climate normal for October. Precipitation is expected on 5 days (about 1.0 inches), against a normal of 3 days and 0.4 inches. The warmest day looks like 22 October (69.3°), the coolest 29 October (12.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 45.2° | 51.5° | -3.5° |
| 31 October – 9 November | 41.7° | 45.3° | -2° |
| 10 November – 19 November | at normal | 41° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Dunkirk (9 mi).
0
Shelby, Thursday, 22 October
Mostly clear. High 69°, low 41°.
0.48
Shelby, Friday, 23 October
Rain. High 49°, low 34°.
0
Shelby, Saturday, 24 October
Clear. High 44°, low 27°.
0
Shelby, Sunday, 25 October
Partly cloudy. High 44°, low 28°.
0.06
Shelby, Monday, 26 October
Light snow. High 45°, low 28°.
0.07Shelby, Tuesday, 27 October
Light snow. High 33°, low 16°.
0
Shelby, Wednesday, 28 October
Overcast. High 33°, low 17°.
0Shelby, Thursday, 29 October
Mostly clear. High 33°, low 12°.
0Shelby, Friday, 30 October
Mostly clear. High 35°, low 20°.
0Shelby, Saturday, 31 October
Partly cloudy. High 39°, low 30°.
0Shelby, Sunday, 1 November
Overcast. High 53°, low 34°.
0.13Shelby, Monday, 2 November
Snow. High 54°, low 36°.
0.29Shelby, Tuesday, 3 November
Snow. High 33°, low 28°.
0Shelby, Wednesday, 4 November
Overcast. High 35°, low 28°.
0Shelby, Thursday, 5 November
Clear. High 36°, low 26°.
0.03Shelby, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Shelby, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Shelby, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Shelby, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Shelby, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.02Shelby, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Shelby, Thursday, 12 November
Climate normal for this date — 60-year average.
0.01Shelby, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Shelby, Saturday, 14 November
Climate normal for this date — 60-year average.
0.01Shelby, Sunday, 15 November
Climate normal for this date — 60-year average.
0.03Shelby, Monday, 16 November
Climate normal for this date — 60-year average.
0.03Shelby, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.03Shelby, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.02Shelby, Thursday, 19 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 Shelby, 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 Shelby, 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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