Weather in Hamilton, MT
Hamilton, Friday, 9 October, 17:15
Overcast. Feels like 74°. High 76°, low 42°.
Monthly outlook for Hamilton, MT: average high 60.4°, average low 39.7°. That is 1.6° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 9 October (76.1°), the coolest 11 October (26.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 57.3° | 58.4° | -0.6° |
| 19 October – 28 October | 65.6° | 54.5° | +6.2° |
| 29 October – 7 November | at normal | 47.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Corvallis (5 mi).
0.57
Hamilton, Saturday, 10 October
Snow. High 50°, low 32°.
0.19Hamilton, Sunday, 11 October
Snow. High 38°, low 26°.
0.07Hamilton, Monday, 12 October
Light snow. High 42°, low 29°.
0
Hamilton, Tuesday, 13 October
Clear. High 49°, low 28°.
0Hamilton, Wednesday, 14 October
Clear. High 56°, low 34°.
0
Hamilton, Thursday, 15 October
Mostly clear. High 61°, low 33°.
0Hamilton, Friday, 16 October
Mostly clear. High 59°, low 38°.
0Hamilton, Saturday, 17 October
Overcast. High 70°, low 47°.
0Hamilton, Sunday, 18 October
Overcast. High 73°, low 51°.
0Hamilton, Monday, 19 October
Clear. High 76°, low 50°.
0Hamilton, Tuesday, 20 October
Clear. High 74°, low 52°.
0Hamilton, Wednesday, 21 October
Clear. High 73°, low 48°.
0.06
Hamilton, Thursday, 22 October
Light rain. High 60°, low 48°.
0.01Hamilton, Friday, 23 October
Light rain. High 54°, low 42°.
0Hamilton, Saturday, 24 October
Clear. High 57°, low 37°.
0.09
Hamilton, Sunday, 25 October
Climate normal for this date — 60-year average.
0.08Hamilton, Monday, 26 October
Climate normal for this date — 60-year average.
0.07
Hamilton, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.07Hamilton, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Hamilton, Thursday, 29 October
Climate normal for this date — 60-year average.
0.04Hamilton, Friday, 30 October
Climate normal for this date — 60-year average.
0.08Hamilton, Saturday, 31 October
Climate normal for this date — 60-year average.
0.07Hamilton, Sunday, 1 November
Climate normal for this date — 60-year average.
0.08Hamilton, Monday, 2 November
Climate normal for this date — 60-year average.
0.05Hamilton, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.07Hamilton, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.08Hamilton, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Hamilton, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Hamilton, Saturday, 7 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 Hamilton, 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 Hamilton, 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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