Weather in Lewistown, MT
Lewistown, Saturday, 14 November, 00:44
Overcast. Feels like 33°. High 58°, low 35°.
Monthly outlook for Lewistown, MT: average high 37.3°, average low 25°. That is 1.2° below the climate normal for November. Precipitation is expected on 7 days (about 1.0 inches), against a normal of 4 days and 0.6 inches. The warmest day looks like 16 November (59.1°), the coolest 29 November (12.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 November – 23 November | 41.2° | 41.3° | -0.1° |
| 24 November – 3 December | 30.9° | 36.1° | -2.9° |
| 4 December – 13 December | at normal | 34.1° | — |
November records over 66 years
0
Lewistown, Sunday, 15 November
Partly cloudy. High 57°, low 37°.
0Lewistown, Monday, 16 November
Overcast. High 59°, low 39°.
0.18
Lewistown, Tuesday, 17 November
Snow. High 39°, low 32°.
0.18Lewistown, Wednesday, 18 November
Snow. High 31°, low 24°.
0.04Lewistown, Thursday, 19 November
Light snow. High 36°, low 22°.
0.27Lewistown, Friday, 20 November
Snow. High 28°, low 22°.
0
Lewistown, Saturday, 21 November
Clear. High 28°, low 14°.
0
Lewistown, Sunday, 22 November
Mostly clear. High 35°, low 15°.
0Lewistown, Monday, 23 November
Partly cloudy. High 40°, low 23°.
0Lewistown, Tuesday, 24 November
Overcast. High 36°, low 28°.
0Lewistown, Wednesday, 25 November
Overcast. High 38°, low 30°.
0.2Lewistown, Thursday, 26 November
Light snow. High 32°, low 26°.
0.09Lewistown, Friday, 27 November
Light snow. High 33°, low 24°.
0.04Lewistown, Saturday, 28 November
Light snow. High 26°, low 19°.
0.02Lewistown, Sunday, 29 November
Light snow. High 20°, low 12°.
0.03Lewistown, Monday, 30 November
Climate normal for this date — 60-year average.
0.04Lewistown, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.07
Lewistown, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.03Lewistown, Thursday, 3 December
Climate normal for this date — 60-year average.
0.04Lewistown, Friday, 4 December
Climate normal for this date — 60-year average.
0.06Lewistown, Saturday, 5 December
Climate normal for this date — 60-year average.
0.05Lewistown, Sunday, 6 December
Climate normal for this date — 60-year average.
0.03Lewistown, Monday, 7 December
Climate normal for this date — 60-year average.
0.02Lewistown, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.04Lewistown, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.03Lewistown, Thursday, 10 December
Climate normal for this date — 60-year average.
0.03Lewistown, Friday, 11 December
Climate normal for this date — 60-year average.
0.04Lewistown, Saturday, 12 December
Climate normal for this date — 60-year average.
0.04Lewistown, Sunday, 13 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 Lewistown, 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 Lewistown, 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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