Weather in Harrison Mill, MT
Harrison Mill, Wednesday, 7 October, 10:36
Clear. Feels like 58°. High 77°, low 40°.
Monthly outlook for Harrison Mill, MT: average high 52.9°, average low 34.3°. That is 2.9° below the climate normal for October. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 9 October (79.4°), the coolest 16 October (25.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 7 October – 16 October | 52.1° | 58.7° | -3.7° |
| 17 October – 26 October | 54.1° | 55.9° | -1° |
| 27 October – 5 November | at normal | 48.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Cardwell (14 mi).
0Harrison Mill, Thursday, 8 October
Clear. High 77°, low 40°.
0
Harrison Mill, Friday, 9 October
Mostly clear. High 79°, low 49°.
0.16
Harrison Mill, Saturday, 10 October
Rain. High 56°, low 37°.
0.35
Harrison Mill, Sunday, 11 October
Snow. High 35°, low 32°.
0.13Harrison Mill, Monday, 12 October
Snow. High 32°, low 27°.
0
Harrison Mill, Tuesday, 13 October
Partly cloudy. High 41°, low 26°.
0.75Harrison Mill, Wednesday, 14 October
Snow. High 48°, low 36°.
0.09Harrison Mill, Thursday, 15 October
Snow. High 37°, low 30°.
0Harrison Mill, Friday, 16 October
Mostly clear. High 39°, low 25°.
0Harrison Mill, Saturday, 17 October
Clear. High 44°, low 26°.
0Harrison Mill, Sunday, 18 October
Clear. High 52°, low 31°.
0Harrison Mill, Monday, 19 October
Clear. High 59°, low 35°.
0Harrison Mill, Tuesday, 20 October
Partly cloudy. High 52°, low 38°.
0Harrison Mill, Wednesday, 21 October
Clear. High 56°, low 37°.
0Harrison Mill, Thursday, 22 October
Mostly clear. High 62°, low 39°.
0.04Harrison Mill, Friday, 23 October
Climate normal for this date — 60-year average.
0.04Harrison Mill, Saturday, 24 October
Climate normal for this date — 60-year average.
0.04Harrison Mill, Sunday, 25 October
Climate normal for this date — 60-year average.
0.07
Harrison Mill, Monday, 26 October
Climate normal for this date — 60-year average.
0.03Harrison Mill, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Harrison Mill, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Harrison Mill, Thursday, 29 October
Climate normal for this date — 60-year average.
0.04Harrison Mill, Friday, 30 October
Climate normal for this date — 60-year average.
0.05Harrison Mill, Saturday, 31 October
Climate normal for this date — 60-year average.
0.04Harrison Mill, Sunday, 1 November
Climate normal for this date — 60-year average.
0.03Harrison Mill, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Harrison Mill, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Harrison Mill, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Harrison Mill, Thursday, 5 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 Harrison Mill, 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 Harrison Mill, 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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