Weather in Westby, MT
Westby, Thursday, 15 October, 10:14
Overcast. Feels like 31°. High 44°, low 33°.
Monthly outlook for Westby, MT: average high 49.8°, average low 36.9°. That is 0.2° below the climate normal for October. Precipitation is expected on 5 days (about 1.8 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (68.8°), the coolest 16 October (28°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 58.4° | 52.1° | +3.5° |
| 25 October – 3 November | 35.6° | 45.7° | -5.6° |
| 4 November – 13 November | at normal | 38.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — McElroy (3 mi).
0
Westby, Friday, 16 October
Clear. High 54°, low 28°.
0
Westby, Saturday, 17 October
Mostly clear. High 68°, low 38°.
0Westby, Sunday, 18 October
Mostly clear. High 57°, low 42°.
0
Westby, Monday, 19 October
Partly cloudy. High 61°, low 36°.
0Westby, Tuesday, 20 October
Overcast. High 62°, low 42°.
0Westby, Wednesday, 21 October
Partly cloudy. High 68°, low 46°.
0Westby, Thursday, 22 October
Overcast. High 69°, low 55°.
0Westby, Friday, 23 October
Overcast. High 56°, low 48°.
0.02
Westby, Saturday, 24 October
Light rain. High 46°, low 38°.
0.04
Westby, Sunday, 25 October
Light snow. High 40°, low 31°.
0.06Westby, Monday, 26 October
Light snow. High 37°, low 34°.
0.5Westby, Tuesday, 27 October
Snow. High 40°, low 33°.
1.1Westby, Wednesday, 28 October
Snow. High 34°, low 29°.
0.02Westby, Thursday, 29 October
Light snow. High 32°, low 29°.
0.08Westby, Friday, 30 October
Light snow. High 31°, low 28°.
0.03Westby, Saturday, 31 October
Climate normal for this date — 60-year average.
0.04Westby, Sunday, 1 November
Climate normal for this date — 60-year average.
0.04Westby, Monday, 2 November
Climate normal for this date — 60-year average.
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.
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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