Weather in Westby, MT
Westby, Wednesday, 21 October, 22:33
Clear. Feels like 44°. High 65°, low 29°.
Monthly outlook for Westby, MT: average high 49.8°, average low 32.2°. That is 1.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 23 October (69.4°), the coolest 5 November (23.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 52.9° | 48.6° | +2.4° |
| 31 October – 9 November | 44.7° | 41.6° | +1.7° |
| 10 November – 19 November | at normal | 36° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — McElroy (3 mi).
0
Westby, Thursday, 22 October
Mostly clear. High 69°, low 40°.
0.31
Westby, Friday, 23 October
Heavy rain. High 69°, low 43°.
0.21Westby, Saturday, 24 October
Rain. High 46°, low 33°.
0
Westby, Sunday, 25 October
Clear. High 42°, low 28°.
0.02
Westby, Monday, 26 October
Light snow. High 36°, low 28°.
0
Westby, Tuesday, 27 October
Overcast. High 43°, low 32°.
0Westby, Wednesday, 28 October
Mostly clear. High 46°, low 29°.
0Westby, Thursday, 29 October
Overcast. High 53°, low 34°.
0Westby, Friday, 30 October
Mostly clear. High 59°, low 42°.
0Westby, Saturday, 31 October
Overcast. High 45°, low 39°.
0Westby, Sunday, 1 November
Overcast. High 40°, low 29°.
0Westby, Monday, 2 November
Overcast. High 46°, low 27°.
0Westby, Tuesday, 3 November
Overcast. High 49°, low 30°.
0.02Westby, Wednesday, 4 November
Light rain. High 51°, low 29°.
0Westby, Thursday, 5 November
Overcast. High 38°, low 24°.
0.02Westby, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Westby, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04
Westby, 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.
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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