 |
 Lewistown Weather Forecast Summary |
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Today
Dec 12th
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Saturday
Dec 13th
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Sunday
Dec 14th
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Monday
Dec 15th
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Tuesday
Dec 16th
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Cloudy |
Cloudy |
Mostly Sunny |
Cloudy |
Cloudy |
31°F
|
36°F
23°F |
22°F
17°F |
26°F
18°F |
31°F
18°F |
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| Lewistown Detailed Weather Forecast |
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| Friday, December 12th, 2025 |
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Evening |
Temperature: 21°F |
| Cloudy. |
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| Saturday, December 13th, 2025 |
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Overnight |
Temperature: 26°F |
| Cloudy. |
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Morning |
Temperature: 34°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 32°F |
| Cloudy. |
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Evening |
Temperature: 24°F |
| Cloudy. |
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| Sunday, December 14th, 2025 |
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Overnight |
Temperature: 19°F |
| Cloudy with clear periods. Windy at times. |
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Morning |
Temperature: 20°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 20°F |
| Sunny with cloudy periods. Windy at times. |
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Evening |
Temperature: 20°F |
| Clear with cloudy periods. Windy at times. |
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| Monday, December 15th, 2025 |
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Overnight |
Temperature: 18°F |
| Cloudy. |
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Morning |
Temperature: 25°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 22°F |
| Cloudy with a chance of flurries. |
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Evening |
Temperature: 20°F |
| Cloudy. |
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| Tuesday, December 16th, 2025 |
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Overnight |
Temperature: 18°F |
| Cloudy. |
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Morning |
Temperature: 28°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 28°F |
| Cloudy. |
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Evening |
Temperature: 26°F |
| Cloudy. |
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| Wednesday, December 17th, 2025 |
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Overnight |
Temperature: 27°F |
| Cloudy. |
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Morning |
Temperature: 42°F |
| Cloudy. |
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Afternoon |
Temperature: 41°F |
| Cloudy. |
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Evening |
Temperature: 43°F |
| Cloudy. |
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| Thursday, December 18th, 2025 |
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Overnight |
Temperature: 45°F |
| Cloudy. |
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Morning |
Temperature: 51°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 49°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 47°F |
| Cloudy. |
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| Friday, December 19th, 2025 |
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Overnight |
Temperature: 46°F |
| Cloudy. |
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Morning |
Temperature: 46°F |
| Cloudy with showers likely. |
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Afternoon |
Temperature: 49°F |
| Cloudy with a chance of showers. |
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Evening |
Temperature: 52°F |
| Cloudy with showers likely. |
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| Saturday, December 20th, 2025 |
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Overnight |
Temperature: 41°F |
| Cloudy. |
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Morning |
Temperature: 42°F |
| Cloudy. |
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Afternoon |
Temperature: 37°F |
| Cloudy with a few showers. Showers possibly mixed with wet flurries. |
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Evening |
Temperature: 37°F |
| Cloudy with a few showers. Showers possibly mixed with wet flurries. |
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