Weather in Lewistown, MT
Lewistown, Thursday, 12 November, 07:47
Overcast. Feels like 40°. High 64°, low 43°.
Monthly outlook for Lewistown, MT: average high 35.5°, average low 21.7°. That is 2.7° below the climate normal for November. Precipitation is expected on 8 days (about 2.1 inches), against a normal of 4 days and 0.6 inches. The warmest day looks like 12 November (64.2°), the coolest 26 November (-19.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 November – 21 November | 46.3° | 42.4° | +2.2° |
| 22 November – 1 December | 17.5° | 36.6° | -10.6° |
| 2 December – 11 December | at normal | 34.6° | — |
November records over 66 years
0Lewistown, Friday, 13 November
Overcast. High 63°, low 39°.
0Lewistown, Saturday, 14 November
Overcast. High 62°, low 39°.
0
Lewistown, Sunday, 15 November
Partly cloudy. High 58°, low 38°.
0Lewistown, Monday, 16 November
Overcast. High 52°, low 40°.
0.04
Lewistown, Tuesday, 17 November
Light rain. High 41°, low 35°.
0.52
Lewistown, Wednesday, 18 November
Snow. High 36°, low 31°.
0.34Lewistown, Thursday, 19 November
Snow. High 32°, low 28°.
0.06Lewistown, Friday, 20 November
Light snow. High 29°, low 21°.
0.22Lewistown, Saturday, 21 November
Snow. High 26°, low 15°.
0Lewistown, Sunday, 22 November
Overcast. High 34°, low 17°.
0.26Lewistown, Monday, 23 November
Light snow. High 29°, low 17°.
0.23Lewistown, Tuesday, 24 November
Light snow. High 15°, low 5°.
0.08Lewistown, Wednesday, 25 November
Light snow. High 3°, low -6°.
0.01Lewistown, Thursday, 26 November
Light snow. High 8°, low -20°.
0.32Lewistown, Friday, 27 November
Light snow. High 16°, low 6°.
0.04Lewistown, Saturday, 28 November
Climate normal for this date — 60-year average.
0.04Lewistown, Sunday, 29 November
Climate normal for this date — 60-year average.
0.03
Lewistown, 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.
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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