 |
 Current Lewistown Weather Conditions |
Updated December 17th at 9:54 pm |
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| Overcast |
| Temperature: | 21°F |
Dew Point: | 18°F |
| Barometer: | 29.77 inHg |
Wind: | N 39 Mph |
| Humidity: | 85.5% |
Visibility: | 0M |
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| Lewistown Weather Forecast Summary |
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Today
Dec 17th
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Thursday
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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Mix of rain and snow |
Cloudy |
Cloudy |
Sunny |
Mix of Cloud and Sun |
51°F
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40°F
16°F |
48°F
29°F |
34°F
28°F |
41°F
28°F |
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| Lewistown Detailed Weather Forecast |
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| Wednesday, December 17th, 2025 |
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Evening |
Temperature: 16°F |
| Clear with cloudy periods with flurries likely. Wind 40 to 50 mph. |
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| Thursday, December 18th, 2025 |
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Overnight |
Temperature: 17°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 31°F |
| Cloudy. |
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Afternoon |
Temperature: 31°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 36°F |
| Cloudy with a slight chance of showers. Showers possibly mixed with wet flurries. Windy at times. |
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| Friday, December 19th, 2025 |
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Overnight |
Temperature: 46°F |
| A mix of cloudy and clear skies. Wind 35 to 45 mph. |
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Morning |
Temperature: 45°F |
| Cloudy with a chance of showers. Wind 20 to 30 mph. |
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Afternoon |
Temperature: 33°F |
| Cloudy with a chance of showers. Showers possibly mixed with wet flurries. Wind 20 to 30 mph. |
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Evening |
Temperature: 29°F |
| Clear. Windy. |
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| Saturday, December 20th, 2025 |
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Overnight |
Temperature: 29°F |
| Clear. Wind 20 to 30 mph. |
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Morning |
Temperature: 33°F |
| Sunny. Wind 20 to 30 mph. |
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Afternoon |
Temperature: 30°F |
| Sunny. Windy. |
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Evening |
Temperature: 28°F |
| Clear. Windy at times. |
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| Sunday, December 21st, 2025 |
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Overnight |
Temperature: 28°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 39°F |
| A mix of cloud and sun. Windy at times. |
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Afternoon |
Temperature: 33°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 35°F |
| Clear with cloudy periods. |
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| Monday, December 22nd, 2025 |
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Overnight |
Temperature: 41°F |
| Cloudy. Windy. |
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Morning |
Temperature: 40°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 32°F |
| Cloudy. |
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Evening |
Temperature: 33°F |
| Cloudy. |
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| Tuesday, December 23rd, 2025 |
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Overnight |
Temperature: 37°F |
| Cloudy. |
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Morning |
Temperature: 43°F |
| Cloudy. |
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Afternoon |
Temperature: 39°F |
| Cloudy. |
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Evening |
Temperature: 34°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 flurries or showers likely. Risk of freezing rain. Windy at times. |
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Afternoon |
Temperature: 27°F |
| Cloudy with flurries likely. Windy. |
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Evening |
Temperature: 25°F |
| Clear. Wind 20 to 30 mph. |
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| Thursday, December 25th, 2025 |
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Overnight |
Temperature: 29°F |
| Clear with cloudy periods. Windy. |
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Morning |
Temperature: 34°F |
| Sunny. Windy. |
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Afternoon |
Temperature: 29°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 25°F |
| Cloudy. |
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