Weather in Sweet Grass, MT
Sweet Grass, Thursday, 29 October, 19:57
Overcast. Feels like 24°. High 34°, low 29°.
Monthly outlook for Sweet Grass, MT: average high 44.2°, average low 31.9°. That is 0.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 3 November (56.4°), the coolest 13 November (27.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 45.1° | 45.4° | -0.2° |
| 8 November – 17 November | 42.8° | 40.8° | +1.1° |
| 18 November – 27 November | at normal | 35.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Sunburst (8 mi).
0.04
Sweet Grass, Friday, 30 October
Light rain. High 36°, low 30°.
0
Sweet Grass, Saturday, 31 October
Partly cloudy. High 44°, low 32°.
0.06Sweet Grass, Sunday, 1 November
Light rain. High 45°, low 31°.
0.01Sweet Grass, Monday, 2 November
Light rain. High 49°, low 32°.
0Sweet Grass, Tuesday, 3 November
Overcast. High 56°, low 32°.
0
Sweet Grass, Wednesday, 4 November
Clear. High 44°, low 29°.
0Sweet Grass, Thursday, 5 November
Overcast. High 43°, low 33°.
0Sweet Grass, Friday, 6 November
Overcast. High 50°, low 34°.
0
Sweet Grass, Saturday, 7 November
Mostly clear. High 48°, low 36°.
0Sweet Grass, Sunday, 8 November
Overcast. High 48°, low 34°.
0Sweet Grass, Monday, 9 November
Overcast. High 45°, low 35°.
0Sweet Grass, Tuesday, 10 November
Mostly clear. High 45°, low 33°.
0Sweet Grass, Wednesday, 11 November
Overcast. High 45°, low 35°.
0Sweet Grass, Thursday, 12 November
Overcast. High 40°, low 29°.
0Sweet Grass, Friday, 13 November
Overcast. High 33°, low 27°.
0.02Sweet Grass, Saturday, 14 November
Climate normal for this date — 60-year average.
0.01Sweet Grass, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Sweet Grass, Monday, 16 November
Climate normal for this date — 60-year average.
0.04Sweet Grass, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.03Sweet Grass, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.02Sweet Grass, Thursday, 19 November
Climate normal for this date — 60-year average.
0.02Sweet Grass, Friday, 20 November
Climate normal for this date — 60-year average.
0.02Sweet Grass, Saturday, 21 November
Climate normal for this date — 60-year average.
0.02Sweet Grass, Sunday, 22 November
Climate normal for this date — 60-year average.
0.02Sweet Grass, Monday, 23 November
Climate normal for this date — 60-year average.
0.04Sweet Grass, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.05Sweet Grass, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.04Sweet Grass, Thursday, 26 November
Climate normal for this date — 60-year average.
0.03Sweet Grass, Friday, 27 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 Sweet Grass, 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 Sweet Grass, 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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