Weather in Chinook, MT
Chinook, Monday, 19 October, 13:06
Partly cloudy. Feels like 55°. High 62°, low 36°.
Monthly outlook for Chinook, MT: average high 52.4°, average low 34.8°. That is 0° above the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 3 days and 0.4 inches. The warmest day looks like 22 October (66.4°), the coolest 27 October (27.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 53.6° | 54.6° | -0.6° |
| 29 October – 7 November | 50.4° | 47.9° | +1.4° |
| 8 November – 17 November | at normal | 42.7° | — |
October records over 66 years
0Chinook, Tuesday, 20 October
Partly cloudy. High 60°, low 35°.
0
Chinook, Wednesday, 21 October
Overcast. High 63°, low 38°.
0
Chinook, Thursday, 22 October
Clear. High 66°, low 40°.
0.72
Chinook, Friday, 23 October
Rain. High 58°, low 42°.
0.13Chinook, Saturday, 24 October
Rain. High 47°, low 35°.
0Chinook, Sunday, 25 October
Overcast. High 49°, low 33°.
0.03
Chinook, Monday, 26 October
Snow. High 41°, low 34°.
0Chinook, Tuesday, 27 October
Clear. High 43°, low 27°.
0Chinook, Wednesday, 28 October
Clear. High 47°, low 29°.
0
Chinook, Thursday, 29 October
Mostly clear. High 48°, low 32°.
0Chinook, Friday, 30 October
Overcast. High 45°, low 31°.
0Chinook, Saturday, 31 October
Clear. High 46°, low 30°.
0Chinook, Sunday, 1 November
Mostly clear. High 55°, low 35°.
0Chinook, Monday, 2 November
Partly cloudy. High 56°, low 40°.
0Chinook, Tuesday, 3 November
Overcast. High 53°, low 39°.
0.03Chinook, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Chinook, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Chinook, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Chinook, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Chinook, Sunday, 8 November
Climate normal for this date — 60-year average.
0.05Chinook, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Chinook, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.02Chinook, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.03Chinook, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Chinook, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Chinook, Saturday, 14 November
Climate normal for this date — 60-year average.
0.01Chinook, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Chinook, Monday, 16 November
Climate normal for this date — 60-year average.
0.03Chinook, Tuesday, 17 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 Chinook, 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 Chinook, 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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