Weather in Shelby, MT
Shelby, Thursday, 22 October, 23:45
Mostly clear. Feels like 48°. High 71°, low 38°.
Monthly outlook for Shelby, MT: average high 40.7°, average low 26.3°. That is 4.6° below the climate normal for October. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 3 days and 0.4 inches. The warmest day looks like 22 October (71.1°), the coolest 3 November (18.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 42.5° | 50.6° | -4.5° |
| 1 November – 10 November | 37.7° | 44.7° | -3.8° |
| 11 November – 20 November | at normal | 40.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Dunkirk (9 mi).
0.22
Shelby, Friday, 23 October
Snow. High 49°, low 25°.
0
Shelby, Saturday, 24 October
Clear. High 45°, low 18°.
0
Shelby, Sunday, 25 October
Partly cloudy. High 41°, low 26°.
0
Shelby, Monday, 26 October
Overcast. High 44°, low 29°.
0.04
Shelby, Tuesday, 27 October
Light rain. High 40°, low 36°.
0.06Shelby, Wednesday, 28 October
Light snow. High 38°, low 26°.
0Shelby, Thursday, 29 October
Overcast. High 30°, low 22°.
0.13Shelby, Friday, 30 October
Snow. High 33°, low 25°.
0.6Shelby, Saturday, 31 October
Snow. High 33°, low 29°.
0.2Shelby, Sunday, 1 November
Snow. High 35°, low 21°.
0Shelby, Monday, 2 November
Clear. High 33°, low 19°.
0Shelby, Tuesday, 3 November
Overcast. High 35°, low 18°.
0Shelby, Wednesday, 4 November
Overcast. High 37°, low 24°.
0Shelby, Thursday, 5 November
Clear. High 41°, low 30°.
0Shelby, Friday, 6 November
Clear. High 46°, low 34°.
0.02
Shelby, 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.
0.02Shelby, 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 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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