Weather in Lewistown, MT
Lewistown, Sunday, 15 November, 09:51
Clear. Feels like 38°. High 58°, low 35°.
Monthly outlook for Lewistown, MT: average high 46.1°, average low 34.2°. That is 4° above the climate normal for November. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 4 days and 0.6 inches. The warmest day looks like 15 November (58°), the coolest 19 November (26.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 46.2° | 40.7° | +3° |
| 25 November – 4 December | 46.1° | 35.8° | +5.7° |
| 5 December – 14 December | at normal | 33.9° | — |
November records over 66 years
0
Lewistown, Monday, 16 November
Overcast. High 56°, low 38°.
0.04
Lewistown, Tuesday, 17 November
Light rain. High 49°, low 34°.
0.22
Lewistown, Wednesday, 18 November
Snow. High 35°, low 30°.
0.01Lewistown, Thursday, 19 November
Light snow. High 36°, low 26°.
0.04Lewistown, Friday, 20 November
Light snow. High 31°, low 28°.
0
Lewistown, Saturday, 21 November
Partly cloudy. High 45°, low 28°.
0Lewistown, Sunday, 22 November
Overcast. High 48°, low 34°.
0
Lewistown, Monday, 23 November
Mostly clear. High 50°, low 36°.
0Lewistown, Tuesday, 24 November
Partly cloudy. High 53°, low 40°.
0.07Lewistown, Wednesday, 25 November
Light rain. High 46°, low 35°.
0Lewistown, Thursday, 26 November
Overcast. High 48°, low 35°.
0Lewistown, Friday, 27 November
Overcast. High 51°, low 37°.
0.03Lewistown, Saturday, 28 November
Light rain. High 45°, low 41°.
0Lewistown, Sunday, 29 November
Clear. High 47°, low 35°.
0Lewistown, Monday, 30 November
Partly cloudy. High 39°, low 33°.
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.
0.05Lewistown, Monday, 14 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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