Weather in Westby, MT
Westby, Thursday, 22 October, 22:59
Clear. Feels like 49°. High 73°, low 41°.
Monthly outlook for Westby, MT: average high 42.6°, average low 30.2°. That is 1.8° below the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (72.5°), the coolest 3 November (19.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 46.8° | 47.8° | -0.6° |
| 1 November – 10 November | 35.7° | 40.8° | -2.8° |
| 11 November – 20 November | at normal | 35.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — McElroy (3 mi).
0
Westby, Friday, 23 October
Overcast. High 70°, low 42°.
0.03
Westby, Saturday, 24 October
Light rain. High 46°, low 32°.
0
Westby, Sunday, 25 October
Clear. High 42°, low 29°.
0
Westby, Monday, 26 October
Mostly clear. High 47°, low 28°.
0.01
Westby, Tuesday, 27 October
Light snow. High 40°, low 33°.
0.07Westby, Wednesday, 28 October
Snow. High 38°, low 33°.
0
Westby, Thursday, 29 October
Partly cloudy. High 37°, low 27°.
0.15Westby, Friday, 30 October
Snow. High 42°, low 27°.
0.57Westby, Saturday, 31 October
Snow. High 33°, low 33°.
0.39Westby, Sunday, 1 November
Snow. High 34°, low 25°.
0Westby, Monday, 2 November
Clear. High 32°, low 21°.
0Westby, Tuesday, 3 November
Overcast. High 35°, low 19°.
0Westby, Wednesday, 4 November
Overcast. High 36°, low 26°.
0Westby, Thursday, 5 November
Clear. High 39°, low 35°.
0Westby, Friday, 6 November
Clear. High 39°, low 33°.
0.02Westby, Saturday, 7 November
Climate normal for this date — 60-year average.
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.
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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