Weather in St. Marie, MT
St. Marie, Sunday, 18 October, 12:26
Partly cloudy. Feels like 48°. High 55°, low 35°.
Monthly outlook for St. Marie, MT: average high 46.8°, average low 34.2°. That is 1.8° below the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 22 October (65.6°), the coolest 31 October (24.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 54.2° | 52.4° | +1° |
| 28 October – 6 November | 34.6° | 45.2° | -5.9° |
| 7 November – 16 November | at normal | 39.4° | — |
October records over 66 years
0
St. Marie, Monday, 19 October
Mostly clear. High 62°, low 35°.
0St. Marie, Tuesday, 20 October
Mostly clear. High 62°, low 38°.
0
St. Marie, Wednesday, 21 October
Clear. High 58°, low 37°.
0St. Marie, Thursday, 22 October
Clear. High 66°, low 47°.
0.17
St. Marie, Friday, 23 October
Light rain. High 63°, low 43°.
0St. Marie, Saturday, 24 October
Partly cloudy. High 43°, low 33°.
0
St. Marie, Sunday, 25 October
Overcast. High 46°, low 37°.
0St. Marie, Monday, 26 October
Overcast. High 46°, low 36°.
0.07St. Marie, Tuesday, 27 October
Light rain. High 42°, low 36°.
1.3
St. Marie, Wednesday, 28 October
Snow. High 39°, low 33°.
0.08St. Marie, Thursday, 29 October
Light snow. High 34°, low 29°.
0.03St. Marie, Friday, 30 October
Light snow. High 30°, low 26°.
0St. Marie, Saturday, 31 October
Partly cloudy. High 36°, low 24°.
0St. Marie, Sunday, 1 November
Overcast. High 35°, low 27°.
0.09St. Marie, Monday, 2 November
Snow. High 33°, low 28°.
0.02St. Marie, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03St. Marie, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.02St. Marie, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02St. Marie, Friday, 6 November
Climate normal for this date — 60-year average.
0.02St. Marie, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04St. Marie, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04St. Marie, Monday, 9 November
Climate normal for this date — 60-year average.
0.03St. Marie, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.02St. Marie, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.03St. Marie, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02St. Marie, Friday, 13 November
Climate normal for this date — 60-year average.
0.03St. Marie, Saturday, 14 November
Climate normal for this date — 60-year average.
0.02St. Marie, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02St. Marie, 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 St. Marie, 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 St. Marie, 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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