 |
 Current Lewistown Weather Conditions |
Updated December 18th at 12:54 pm |
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| Temperature: | 36°F |
Dew Point: | 16°F |
| Barometer: | 29.77 inHg |
Wind: | N 17 Mph |
| Humidity: | 43.5% |
Visibility: | 0M |
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| Lewistown Weather Forecast Summary |
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Today
Dec 18th
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Friday
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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Cloudy |
Cloudy |
Mostly Sunny |
Cloudy |
Cloudy |
46°F
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47°F
28°F |
34°F
29°F |
39°F
29°F |
39°F
33°F |
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| Lewistown Detailed Weather Forecast |
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| Thursday, December 18th, 2025 |
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Afternoon |
Temperature: 33°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 41°F |
| Cloudy. Wind 25 to 40 mph. |
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| Friday, December 19th, 2025 |
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Overnight |
Temperature: 46°F |
| Cloudy. Wind 35 to 45 mph. |
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Morning |
Temperature: 42°F |
| Cloudy. Wind 25 to 40 mph. |
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Afternoon |
Temperature: 30°F |
| Sunny. Wind 25 to 40 mph. |
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Evening |
Temperature: 29°F |
| Clear with cloudy periods. Windy. |
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| Saturday, December 20th, 2025 |
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Overnight |
Temperature: 29°F |
| Mostly clear. Wind 20 to 30 mph. |
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Morning |
Temperature: 34°F |
| Sunny. Windy. |
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Afternoon |
Temperature: 31°F |
| Sunny with cloudy periods. Windy at times. |
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Evening |
Temperature: 30°F |
| Clear. Windy at times. |
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| Sunday, December 21st, 2025 |
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Overnight |
Temperature: 30°F |
| Cloudy. |
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Morning |
Temperature: 37°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 37°F |
| Cloudy with sunny periods. |
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Evening |
Temperature: 38°F |
| Cloudy. |
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| Monday, December 22nd, 2025 |
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Overnight |
Temperature: 39°F |
| Cloudy with a slight chance of showers. Showers possibly mixed with wet flurries. |
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Morning |
Temperature: 37°F |
| Cloudy with a chance of showers. Showers possibly mixed with wet flurries. Windy at times. |
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Afternoon |
Temperature: 35°F |
| Cloudy with a slight chance of flurries or showers. Risk of freezing rain. |
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Evening |
Temperature: 33°F |
| Cloudy. Windy at times. |
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| Tuesday, December 23rd, 2025 |
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Overnight |
Temperature: 33°F |
| Cloudy. |
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Morning |
Temperature: 44°F |
| Cloudy. |
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Afternoon |
Temperature: 42°F |
| Cloudy. |
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Evening |
Temperature: 39°F |
| Cloudy. |
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| Wednesday, December 24th, 2025 |
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Overnight |
Temperature: 32°F |
| Cloudy. |
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Morning |
Temperature: 33°F |
| Cloudy with sunny periods. |
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Afternoon |
Temperature: 28°F |
| Cloudy. |
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Evening |
Temperature: 26°F |
| Cloudy. |
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| Thursday, December 25th, 2025 |
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Overnight |
Temperature: 21°F |
| Clear with cloudy periods. Windy at times. |
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Morning |
Temperature: 25°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 19°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 18°F |
| A mix of cloudy and clear skies. |
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| Friday, December 26th, 2025 |
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Overnight |
Temperature: 15°F |
| Cloudy. |
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Morning |
Temperature: 18°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 19°F |
| Cloudy with sunny periods. |
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Evening |
Temperature: 19°F |
| Mostly clear. |
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