Weather in Lewistown, MT
Lewistown, Saturday, 14 November, 10:43
Partly cloudy. Feels like 50°. High 59°, low 32°.
Monthly outlook for Lewistown, MT: average high 43.2°, average low 29.7°. That is 2.1° above the climate normal for November. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 4 days and 0.6 inches. The warmest day looks like 14 November (59.3°), the coolest 28 November (21.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 November – 23 November | 44.9° | 41.3° | +2° |
| 24 November – 3 December | 40.4° | 36.1° | +2.4° |
| 4 December – 13 December | at normal | 34.1° | — |
November records over 66 years
0
Lewistown, Sunday, 15 November
Clear. High 56°, low 34°.
0
Lewistown, Monday, 16 November
Overcast. High 58°, low 38°.
0Lewistown, Tuesday, 17 November
Overcast. High 46°, low 33°.
0.02
Lewistown, Wednesday, 18 November
Light rain. High 37°, low 29°.
0.05Lewistown, Thursday, 19 November
Light rain. High 37°, low 29°.
0.12
Lewistown, Friday, 20 November
Light snow. High 32°, low 30°.
0.03Lewistown, Saturday, 21 November
Light snow. High 36°, low 23°.
0
Lewistown, Sunday, 22 November
Mostly clear. High 43°, low 27°.
0Lewistown, Monday, 23 November
Overcast. High 44°, low 34°.
0Lewistown, Tuesday, 24 November
Overcast. High 47°, low 35°.
0.06Lewistown, Wednesday, 25 November
Light rain. High 51°, low 36°.
0.14Lewistown, Thursday, 26 November
Snow. High 40°, low 26°.
0.28Lewistown, Friday, 27 November
Snow. High 26°, low 22°.
0Lewistown, Saturday, 28 November
Overcast. High 35°, low 21°.
0Lewistown, Sunday, 29 November
Overcast. High 43°, low 26°.
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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