 |
 Current Lewistown Weather Conditions |
Updated February 18th at 9:54 am |
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| Overcast |
| Temperature: | -6°F |
Dew Point: | -11°F |
| Barometer: | 29.74 inHg |
Wind: | N 17 Mph |
| Humidity: | 51.2% |
Visibility: | 0M |
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| Lewistown Weather Forecast Summary |
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Today
Feb 18th
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Thursday
Feb 19th
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Friday
Feb 20th
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Saturday
Feb 21st
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Sunday
Feb 22nd
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Cloudy |
Cloudy |
Mostly Sunny |
Mostly Sunny |
Cloudy |
10°F
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12°F
3°F |
26°F
7°F |
23°F
11°F |
26°F
11°F |
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| Lewistown Detailed Weather Forecast |
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| Wednesday, February 18th, 2026 |
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Morning |
Temperature: 9°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 7°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 3°F |
| Cloudy with a chance of flurries. Windy at times. |
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| Thursday, February 19th, 2026 |
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Overnight |
Temperature: 3°F |
| Cloudy with a chance of flurries. |
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Morning |
Temperature: 9°F |
| Cloudy with a chance of flurries. |
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Afternoon |
Temperature: 12°F |
| Cloudy with a chance of flurries. |
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Evening |
Temperature: 9°F |
| Cloudy. |
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| Friday, February 20th, 2026 |
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Overnight |
Temperature: 9°F |
| Clear. |
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Morning |
Temperature: 24°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 18°F |
| A mix of cloud and sun with a slight chance of flurries. |
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Evening |
Temperature: 13°F |
| Clear with cloudy periods. |
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| Saturday, February 21st, 2026 |
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Overnight |
Temperature: 11°F |
| Clear. |
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Morning |
Temperature: 21°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 18°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 12°F |
| Clear with cloudy periods. |
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| Sunday, February 22nd, 2026 |
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Overnight |
Temperature: 12°F |
| Cloudy. |
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Morning |
Temperature: 23°F |
| A mix of cloud and sun. Windy. |
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Afternoon |
Temperature: 22°F |
| A mix of cloud and sun. Windy at times. |
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Evening |
Temperature: 23°F |
| Clear. |
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| Monday, February 23rd, 2026 |
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Overnight |
Temperature: 31°F |
| Clear. |
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Morning |
Temperature: 51°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 43°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 42°F |
| Cloudy. Windy at times. |
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| Tuesday, February 24th, 2026 |
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Overnight |
Temperature: 39°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 38°F |
| Cloudy with a chance of showers. Showers possibly mixed with wet flurries. Windy at times. |
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Afternoon |
Temperature: 33°F |
| Cloudy with a chance of flurries or showers. Risk of freezing rain. Windy at times. |
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Evening |
Temperature: 29°F |
| Cloudy. |
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| Wednesday, February 25th, 2026 |
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Overnight |
Temperature: 31°F |
| Cloudy. |
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Morning |
Temperature: 40°F |
| Cloudy. |
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Afternoon |
Temperature: 34°F |
| Cloudy with a chance of showers. Showers possibly mixed with wet flurries. |
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Evening |
Temperature: 30°F |
| Cloudy with a chance of flurries or showers. |
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