Weather in Castner Falls, MT
Castner Falls, Saturday, 10 October, 16:58
Snow. Feels like 33°. High 55°, low 33°.
Monthly outlook for Castner Falls, MT: average high 54.1°, average low 37°. That is 1.9° below the climate normal for October. Precipitation is expected on 3 days (about 1.5 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 24 October (74.9°), the coolest 13 October (23.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 47.1° | 58.1° | -6.1° |
| 20 October – 29 October | 65.7° | 54.8° | +6.1° |
| 30 October – 8 November | at normal | 48.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Ulm (8 mi).
0.73Castner Falls, Sunday, 11 October
Snow. High 35°, low 32°.
0.31Castner Falls, Monday, 12 October
Snow. High 33°, low 23°.
0
Castner Falls, Tuesday, 13 October
Clear. High 38°, low 23°.
0Castner Falls, Wednesday, 14 October
Clear. High 46°, low 25°.
0Castner Falls, Thursday, 15 October
Clear. High 50°, low 30°.
0
Castner Falls, Friday, 16 October
Mostly clear. High 39°, low 31°.
0
Castner Falls, Saturday, 17 October
Partly cloudy. High 49°, low 30°.
0
Castner Falls, Sunday, 18 October
Overcast. High 63°, low 40°.
0Castner Falls, Monday, 19 October
Overcast. High 64°, low 50°.
0Castner Falls, Tuesday, 20 October
Overcast. High 57°, low 48°.
0.01
Castner Falls, Wednesday, 21 October
Light rain. High 54°, low 42°.
0Castner Falls, Thursday, 22 October
Mostly clear. High 63°, low 36°.
0Castner Falls, Friday, 23 October
Mostly clear. High 73°, low 46°.
0Castner Falls, Saturday, 24 October
Overcast. High 75°, low 50°.
0Castner Falls, Sunday, 25 October
Overcast. High 73°, low 54°.
0.05Castner Falls, Monday, 26 October
Climate normal for this date — 60-year average.
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.
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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