Weather in Amherst, MT
Amherst, Saturday, 17 October, 08:39
Overcast. Feels like 47°. High 74°, low 46°.
Monthly outlook for Amherst, MT: average high 55.4°, average low 38°. That is 1.7° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 22 October (74.8°), the coolest 31 October (19.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 61.9° | 54.6° | +4.1° |
| 27 October – 5 November | 44.6° | 48.2° | -2° |
| 6 November – 15 November | at normal | 43.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lewistown (11 mi).
0Amherst, Sunday, 18 October
Overcast. High 61°, low 39°.
0
Amherst, Monday, 19 October
Clear. High 72°, low 39°.
0Amherst, Tuesday, 20 October
Overcast. High 57°, low 42°.
0Amherst, Wednesday, 21 October
Clear. High 69°, low 39°.
0Amherst, Thursday, 22 October
Clear. High 75°, low 50°.
0.28
Amherst, Friday, 23 October
Rain. High 53°, low 42°.
0.14Amherst, Saturday, 24 October
Rain. High 51°, low 38°.
0Amherst, Sunday, 25 October
Overcast. High 58°, low 42°.
0Amherst, Monday, 26 October
Overcast. High 49°, low 44°.
0
Amherst, Tuesday, 27 October
Partly cloudy. High 53°, low 43°.
0Amherst, Wednesday, 28 October
Overcast. High 52°, low 39°.
0.01Amherst, Thursday, 29 October
Light rain. High 50°, low 37°.
0.38
Amherst, Friday, 30 October
Snow. High 31°, low 24°.
0Amherst, Saturday, 31 October
Partly cloudy. High 39°, low 20°.
0Amherst, Sunday, 1 November
Overcast. High 42°, low 25°.
0.02Amherst, Monday, 2 November
Climate normal for this date — 60-year average.
0.05Amherst, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.05Amherst, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.07Amherst, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03
Amherst, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Amherst, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Amherst, Sunday, 8 November
Climate normal for this date — 60-year average.
0.05Amherst, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Amherst, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.03Amherst, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Amherst, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Amherst, Friday, 13 November
Climate normal for this date — 60-year average.
0.04Amherst, Saturday, 14 November
Climate normal for this date — 60-year average.
0.03Amherst, Sunday, 15 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 Amherst, 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 Amherst, 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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