Weather in Amherst, MT
Amherst, Sunday, 18 October, 08:56
Clear. Feels like 39°. High 63°, low 41°.
Monthly outlook for Amherst, MT: average high 52°, average low 34.3°. That is 0.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 22 October (73.6°), the coolest 31 October (16.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 58.5° | 54.1° | +2.5° |
| 28 October – 6 November | 41.2° | 47.7° | -3.6° |
| 7 November – 16 November | at normal | 43.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lewistown (11 mi).
0Amherst, Monday, 19 October
Clear. High 72°, low 40°.
0
Amherst, Tuesday, 20 October
Overcast. High 58°, low 42°.
0Amherst, Wednesday, 21 October
Clear. High 68°, low 38°.
0
Amherst, Thursday, 22 October
Mostly clear. High 74°, low 49°.
0.67
Amherst, Friday, 23 October
Rain. High 54°, low 43°.
0.01Amherst, Saturday, 24 October
Light rain. High 45°, low 34°.
0Amherst, Sunday, 25 October
Overcast. High 55°, low 37°.
0Amherst, Monday, 26 October
Overcast. High 51°, low 37°.
0.01Amherst, Tuesday, 27 October
Light rain. High 46°, low 36°.
0.07
Amherst, Wednesday, 28 October
Light snow. High 50°, low 36°.
0.28Amherst, Thursday, 29 October
Snow. High 35°, low 25°.
0.04Amherst, Friday, 30 October
Light snow. High 32°, low 18°.
0
Amherst, Saturday, 31 October
Partly cloudy. High 38°, low 16°.
0Amherst, Sunday, 1 November
Overcast. High 41°, low 21°.
0.04Amherst, Monday, 2 November
Light rain. High 50°, low 36°.
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.
0.03Amherst, 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.
0.03Amherst, 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 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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