Weather in Castner Falls, MT
Castner Falls, Sunday, 11 October, 14:50
Snow. Feels like 22°. High 33°, low 30°.
Monthly outlook for Castner Falls, MT: average high 51.5°, average low 36.5°. That is 3° below the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 16 October (70.3°), the coolest 13 October (25.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 54.2° | 57.9° | -2° |
| 21 October – 30 October | 47° | 53.9° | -3.8° |
| 31 October – 9 November | at normal | 47.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Ulm (8 mi).
0.12Castner Falls, Monday, 12 October
Snow. High 34°, low 26°.
0
Castner Falls, Tuesday, 13 October
Clear. High 47°, low 25°.
0
Castner Falls, Wednesday, 14 October
Partly cloudy. High 55°, low 27°.
0Castner Falls, Thursday, 15 October
Clear. High 53°, low 33°.
0Castner Falls, Friday, 16 October
Clear. High 70°, low 41°.
0Castner Falls, Saturday, 17 October
Clear. High 64°, low 43°.
0
Castner Falls, Sunday, 18 October
Overcast. High 66°, low 49°.
0Castner Falls, Monday, 19 October
Overcast. High 66°, low 46°.
0Castner Falls, Tuesday, 20 October
Overcast. High 53°, low 45°.
0Castner Falls, Wednesday, 21 October
Partly cloudy. High 50°, low 42°.
0.01
Castner Falls, Thursday, 22 October
Light rain. High 43°, low 38°.
0.02Castner Falls, Friday, 23 October
Snow. High 43°, low 36°.
0Castner Falls, Saturday, 24 October
Clear. High 58°, low 33°.
0
Castner Falls, Sunday, 25 October
Mostly clear. High 49°, low 37°.
0Castner Falls, Monday, 26 October
Overcast. High 39°, low 32°.
0.04Castner Falls, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.04Castner Falls, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.04Castner Falls, Thursday, 29 October
Climate normal for this date — 60-year average.
0.02Castner Falls, Friday, 30 October
Climate normal for this date — 60-year average.
0.03Castner Falls, Saturday, 31 October
Climate normal for this date — 60-year average.
0.03Castner Falls, Sunday, 1 November
Climate normal for this date — 60-year average.
0.02Castner Falls, Monday, 2 November
Climate normal for this date — 60-year average.
0.03Castner Falls, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Castner Falls, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Castner Falls, Thursday, 5 November
Climate normal for this date — 60-year average.
0.04Castner Falls, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Castner Falls, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Castner Falls, Sunday, 8 November
Climate normal for this date — 60-year average.
0.05Castner Falls, Monday, 9 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 Castner Falls, 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 Castner Falls, 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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