Weather in Westby, MT
Westby, Friday, 23 October, 06:25
Overcast. Feels like 45°. High 72°, low 42°.
Monthly outlook for Westby, MT: average high 41.3°, average low 27.5°. That is 2.2° below the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 23 October (72.3°), the coolest 30 October (14.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 42.9° | 47.2° | -2.4° |
| 2 November – 11 November | 38.8° | 39.9° | -0.7° |
| 12 November – 21 November | at normal | 35.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — McElroy (3 mi).
0.04
Westby, Saturday, 24 October
Light rain. High 48°, low 33°.
0
Westby, Sunday, 25 October
Clear. High 42°, low 29°.
0Westby, Monday, 26 October
Clear. High 48°, low 28°.
0Westby, Tuesday, 27 October
Overcast. High 46°, low 31°.
0.15
Westby, Wednesday, 28 October
Snow. High 43°, low 34°.
0Westby, Thursday, 29 October
Overcast. High 32°, low 22°.
0Westby, Friday, 30 October
Clear. High 30°, low 15°.
0
Westby, Saturday, 31 October
Mostly clear. High 33°, low 17°.
0Westby, Sunday, 1 November
Mostly clear. High 35°, low 19°.
0Westby, Monday, 2 November
Mostly clear. High 36°, low 23°.
0
Westby, Tuesday, 3 November
Partly cloudy. High 38°, low 23°.
0Westby, Wednesday, 4 November
Clear. High 44°, low 27°.
0Westby, Thursday, 5 November
Overcast. High 42°, low 33°.
0.08Westby, Friday, 6 November
Snow. High 38°, low 32°.
0.04Westby, Saturday, 7 November
Light snow. High 36°, low 33°.
0.04Westby, Sunday, 8 November
Climate normal for this date — 60-year average.
0.03Westby, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Westby, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.02Westby, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Westby, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Westby, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Westby, Saturday, 14 November
Climate normal for this date — 60-year average.
0.02Westby, Sunday, 15 November
Climate normal for this date — 60-year average.
0.03Westby, Monday, 16 November
Climate normal for this date — 60-year average.
0.02Westby, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.04Westby, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.03Westby, Thursday, 19 November
Climate normal for this date — 60-year average.
0.02Westby, Friday, 20 November
Climate normal for this date — 60-year average.
0.02Westby, Saturday, 21 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 Westby, 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 Westby, 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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