Weather in Castner Falls, MT
Castner Falls, Friday, 16 October, 09:59
Mostly clear. Feels like 43°. High 67°, low 31°.
Monthly outlook for Castner Falls, MT: average high 56.9°, average low 36.5°. That is 1.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (73.1°), the coolest 25 October (29°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 59.8° | 57.1° | +1.5° |
| 26 October – 4 November | 52.1° | 50.5° | +0.8° |
| 5 November – 14 November | at normal | 45.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Ulm (8 mi).
0
Castner Falls, Saturday, 17 October
Overcast. High 71°, low 45°.
0
Castner Falls, Sunday, 18 October
Clear. High 62°, low 42°.
0Castner Falls, Monday, 19 October
Overcast. High 64°, low 37°.
0Castner Falls, Tuesday, 20 October
Overcast. High 58°, low 40°.
0Castner Falls, Wednesday, 21 October
Clear. High 66°, low 37°.
0Castner Falls, Thursday, 22 October
Overcast. High 73°, low 48°.
0.71
Castner Falls, Friday, 23 October
Snow. High 52°, low 35°.
0.13Castner Falls, Saturday, 24 October
Snow. High 41°, low 31°.
0Castner Falls, Sunday, 25 October
Clear. High 44°, low 29°.
0Castner Falls, Monday, 26 October
Clear. High 46°, low 30°.
0Castner Falls, Tuesday, 27 October
Clear. High 54°, low 35°.
0Castner Falls, Wednesday, 28 October
Overcast. High 56°, low 39°.
0Castner Falls, Thursday, 29 October
Mostly clear. High 48°, low 35°.
0Castner Falls, Friday, 30 October
Clear. High 50°, low 34°.
0Castner Falls, Saturday, 31 October
Clear. High 57°, low 35°.
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.
0.04
Castner 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.
0.03Castner Falls, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.03Castner Falls, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Castner Falls, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Castner Falls, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Castner Falls, Saturday, 14 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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