Weather in Sweet Grass, MT
Sweet Grass, Thursday, 12 November, 07:25
Overcast. Feels like 42°. High 61°, low 41°.
Monthly outlook for Sweet Grass, MT: average high 34.6°, average low 19.3°. That is 1.7° below the climate normal for November. Precipitation is expected on 8 days (about 1.9 inches), against a normal of 3 days and 0.4 inches. The warmest day looks like 12 November (61.4°), the coolest 25 November (-21°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 November – 21 November | 44.1° | 39.5° | +2.6° |
| 22 November – 1 December | 18.7° | 33.9° | -8.5° |
| 2 December – 11 December | at normal | 31.7° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Sunburst (8 mi).
0Sweet Grass, Friday, 13 November
Overcast. High 56°, low 34°.
0
Sweet Grass, Saturday, 14 November
Clear. High 59°, low 37°.
0
Sweet Grass, Sunday, 15 November
Mostly clear. High 55°, low 37°.
0Sweet Grass, Monday, 16 November
Overcast. High 51°, low 38°.
0.03
Sweet Grass, Tuesday, 17 November
Light snow. High 43°, low 31°.
0.62Sweet Grass, Wednesday, 18 November
Snow. High 32°, low 29°.
0.54Sweet Grass, Thursday, 19 November
Snow. High 29°, low 27°.
0.12Sweet Grass, Friday, 20 November
Light snow. High 29°, low 21°.
0.06Sweet Grass, Saturday, 21 November
Light snow. High 26°, low 16°.
0.08Sweet Grass, Sunday, 22 November
Light snow. High 33°, low 20°.
0.22Sweet Grass, Monday, 23 November
Snow. High 26°, low 14°.
0.1Sweet Grass, Tuesday, 24 November
Light snow. High 14°, low 3°.
0.02Sweet Grass, Wednesday, 25 November
Light snow. High 1°, low -21°.
0.03Sweet Grass, Thursday, 26 November
Light snow. High 19°, low -20°.
0.09Sweet Grass, Friday, 27 November
Light snow. High 18°, low 1°.
0.04Sweet Grass, Saturday, 28 November
Climate normal for this date — 60-year average.
0.02Sweet Grass, Sunday, 29 November
Climate normal for this date — 60-year average.
0.02Sweet Grass, Monday, 30 November
Climate normal for this date — 60-year average.
0.02Sweet Grass, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.04
Sweet Grass, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.02Sweet Grass, Thursday, 3 December
Climate normal for this date — 60-year average.
0.02Sweet Grass, Friday, 4 December
Climate normal for this date — 60-year average.
0.03Sweet Grass, Saturday, 5 December
Climate normal for this date — 60-year average.
0.03Sweet Grass, Sunday, 6 December
Climate normal for this date — 60-year average.
0.01Sweet Grass, Monday, 7 December
Climate normal for this date — 60-year average.
0.02Sweet Grass, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.02Sweet Grass, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.03Sweet Grass, Thursday, 10 December
Climate normal for this date — 60-year average.
0.03Sweet Grass, Friday, 11 December
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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