Weather in Westby, MT
Westby, Sunday, 18 October, 17:29
Clear. Feels like 52°. High 57°, low 35°.
Monthly outlook for Westby, MT: average high 50.6°, average low 37°. That is 1.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (66.8°), the coolest 2 November (27.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 55.2° | 51.1° | +2.3° |
| 28 October – 6 November | 43° | 43.6° | -0.4° |
| 7 November – 16 November | at normal | 37.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — McElroy (3 mi).
0
Westby, Monday, 19 October
Partly cloudy. High 60°, low 34°.
0
Westby, Tuesday, 20 October
Overcast. High 60°, low 37°.
0
Westby, Wednesday, 21 October
Mostly clear. High 59°, low 36°.
0Westby, Thursday, 22 October
Clear. High 67°, low 48°.
0.31
Westby, Friday, 23 October
Rain. High 65°, low 54°.
0.27
Westby, Saturday, 24 October
Snow. High 48°, low 36°.
0Westby, Sunday, 25 October
Overcast. High 43°, low 32°.
0Westby, Monday, 26 October
Overcast. High 46°, low 34°.
0Westby, Tuesday, 27 October
Overcast. High 49°, low 41°.
0.04Westby, Wednesday, 28 October
Light rain. High 53°, low 44°.
0.01Westby, Thursday, 29 October
Light rain. High 44°, low 38°.
0Westby, Friday, 30 October
Overcast. High 54°, low 35°.
0Westby, Saturday, 31 October
Overcast. High 40°, low 33°.
0Westby, Sunday, 1 November
Overcast. High 32°, low 28°.
0.09Westby, Monday, 2 November
Light snow. High 34°, low 27°.
0.02Westby, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03Westby, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.03Westby, Thursday, 5 November
Climate normal for this date — 60-year average.
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.
0.04Westby, 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.
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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