Weather in Plains, MT
Plains, Saturday, 10 October, 02:27
Overcast. Feels like 50°. High 52°, low 36°.
Monthly outlook for Plains, MT: average high 54.1°, average low 34.3°. That is 2.3° below the climate normal for October. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 18 October (68.3°), the coolest 13 October (24.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 56.4° | 59.3° | -1.6° |
| 20 October – 29 October | 50.2° | 54.7° | -2.5° |
| 30 October – 8 November | at normal | 48.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Paradise (6 mi).
0.16
Plains, Sunday, 11 October
Snow. High 42°, low 31°.
0Plains, Monday, 12 October
Light snow. High 46°, low 27°.
0
Plains, Tuesday, 13 October
Clear. High 53°, low 24°.
0Plains, Wednesday, 14 October
Clear. High 58°, low 29°.
0Plains, Thursday, 15 October
Clear. High 61°, low 33°.
0
Plains, Friday, 16 October
Partly cloudy. High 54°, low 34°.
0Plains, Saturday, 17 October
Clear. High 66°, low 33°.
0Plains, Sunday, 18 October
Clear. High 68°, low 41°.
0Plains, Monday, 19 October
Overcast. High 67°, low 42°.
0.26
Plains, Tuesday, 20 October
Light rain. High 45°, low 39°.
0.06Plains, Wednesday, 21 October
Light rain. High 54°, low 33°.
0.12Plains, Thursday, 22 October
Light rain. High 44°, low 40°.
0Plains, Friday, 23 October
Light rain. High 48°, low 35°.
0Plains, Saturday, 24 October
Overcast. High 57°, low 34°.
0Plains, Sunday, 25 October
Clear. High 52°, low 36°.
0.07
Plains, Monday, 26 October
Climate normal for this date — 60-year average.
0.07Plains, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.07Plains, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.07Plains, Thursday, 29 October
Climate normal for this date — 60-year average.
0.06Plains, Friday, 30 October
Climate normal for this date — 60-year average.
0.1Plains, Saturday, 31 October
Climate normal for this date — 60-year average.
0.09Plains, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Plains, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Plains, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.1Plains, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.09Plains, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11Plains, Friday, 6 November
Climate normal for this date — 60-year average.
0.13Plains, Saturday, 7 November
Climate normal for this date — 60-year average.
0.08Plains, Sunday, 8 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 Plains, 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 Plains, 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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