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 Lewistown Weather Forecast Summary |
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Today
Dec 19th
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Saturday
Dec 20th
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Sunday
Dec 21st
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Monday
Dec 22nd
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Tuesday
Dec 23rd
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Mix of rain and snow |
Cloudy |
Cloudy |
Cloudy |
Cloudy |
53°F
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35°F
24°F |
37°F
22°F |
32°F
22°F |
39°F
28°F |
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| Lewistown Detailed Weather Forecast |
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| Friday, December 19th, 2025 |
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Afternoon |
Temperature: 25°F |
| Sunny with cloudy periods. Windy. |
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Evening |
Temperature: 25°F |
| Mostly clear. Windy. |
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| Saturday, December 20th, 2025 |
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Overnight |
Temperature: 24°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 32°F |
| Cloudy. |
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Afternoon |
Temperature: 32°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 33°F |
| A mix of cloudy and clear skies. |
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| Sunday, December 21st, 2025 |
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Overnight |
Temperature: 36°F |
| A mix of cloudy and clear skies. Windy at times. |
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Morning |
Temperature: 36°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 27°F |
| A mix of cloud and sun. Windy at times. |
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Evening |
Temperature: 22°F |
| Cloudy. Windy at times. |
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| Monday, December 22nd, 2025 |
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Overnight |
Temperature: 22°F |
| Clear. Windy at times. |
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Morning |
Temperature: 30°F |
| Cloudy. |
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Afternoon |
Temperature: 30°F |
| Cloudy. |
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Evening |
Temperature: 29°F |
| Cloudy. |
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| Tuesday, December 23rd, 2025 |
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Overnight |
Temperature: 29°F |
| Cloudy with a chance of flurries. |
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Morning |
Temperature: 31°F |
| Cloudy with a slight chance of flurries or showers. |
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Afternoon |
Temperature: 35°F |
| Cloudy. |
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Evening |
Temperature: 38°F |
| Cloudy. |
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| Wednesday, December 24th, 2025 |
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Overnight |
Temperature: 36°F |
| Cloudy. |
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Morning |
Temperature: 39°F |
| Sunny. |
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Afternoon |
Temperature: 34°F |
| Sunny. |
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Evening |
Temperature: 30°F |
| Cloudy. |
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| Thursday, December 25th, 2025 |
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Overnight |
Temperature: 33°F |
| Cloudy. |
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Morning |
Temperature: 37°F |
| Cloudy with a chance of showers. Showers possibly mixed with wet flurries. |
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Afternoon |
Temperature: 39°F |
| Cloudy with a chance of showers. Showers possibly mixed with wet flurries. |
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Evening |
Temperature: 44°F |
| Cloudy with a chance of showers. |
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| Friday, December 26th, 2025 |
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Overnight |
Temperature: 56°F |
| Cloudy with a chance of showers. Windy at times. |
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Morning |
Temperature: 55°F |
| Sunny with cloudy periods. Windy. |
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Afternoon |
Temperature: 48°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 42°F |
| Cloudy. Windy at times. |
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| Saturday, December 27th, 2025 |
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Overnight |
Temperature: 37°F |
| Cloudy. |
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Morning |
Temperature: 46°F |
| Cloudy. |
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Afternoon |
Temperature: 44°F |
| Cloudy. |
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Evening |
Temperature: 39°F |
| A mix of cloudy and clear skies. |
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