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 Lewistown Weather Forecast Summary |
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Today
May 31st
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Monday
Jun 1st
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Tuesday
Jun 2nd
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Wednesday
Jun 3rd
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Thursday
Jun 4th
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Showers |
Mix of rain and snow |
Mostly Cloudy |
Mostly Sunny |
Mostly Sunny |
54°F
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45°F
37°F |
51°F
41°F |
67°F
39°F |
77°F
50°F |
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| Lewistown Detailed Weather Forecast |
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| Sunday, May 31st, 2026 |
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Morning |
Temperature: 49°F |
| Cloudy with a slight chance of showers. Wind 20 to 30 mph. |
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Afternoon |
Temperature: 47°F |
| Cloudy with a slight chance of showers. Wind 20 to 30 mph. |
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Evening |
Temperature: 41°F |
| Cloudy with showers likely. Wind 20 to 30 mph. |
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| Monday, June 1st, 2026 |
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Overnight |
Temperature: 38°F |
| Cloudy with showers likely. Showers possibly mixed with wet flurries. Wind 20 to 30 mph. |
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Morning |
Temperature: 38°F |
| Cloudy with showers likely. Showers possibly mixed with wet flurries. Wind 20 to 30 mph. |
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Afternoon |
Temperature: 42°F |
| Mostly cloudy with a chance of showers. Wind 25 to 40 mph. |
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Evening |
Temperature: 43°F |
| A mix of cloudy and clear skies. Wind 25 to 40 mph. |
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| Tuesday, June 2nd, 2026 |
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Overnight |
Temperature: 41°F |
| Cloudy. Wind 20 to 30 mph. |
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Morning |
Temperature: 43°F |
| A mix of cloud and sun. Windy. |
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Afternoon |
Temperature: 49°F |
| Mostly cloudy. Windy. |
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Evening |
Temperature: 48°F |
| A mix of cloudy and clear skies. Windy. |
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| Wednesday, June 3rd, 2026 |
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Overnight |
Temperature: 40°F |
| Clear. Windy at times. |
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Morning |
Temperature: 46°F |
| Mostly sunny. |
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Afternoon |
Temperature: 63°F |
| Mostly sunny. Windy at times. |
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Evening |
Temperature: 62°F |
| Clear. Windy at times. |
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| Thursday, June 4th, 2026 |
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Overnight |
Temperature: 51°F |
| Mostly clear. |
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Morning |
Temperature: 56°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 75°F |
| A mix of cloud and sun with a slight chance of showers or thundershowers. Windy at times. |
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Evening |
Temperature: 58°F |
| Clear with a chance of showers. Wind 20 to 30 mph. |
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| Friday, June 5th, 2026 |
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Overnight |
Temperature: 51°F |
| Clear. |
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Morning |
Temperature: 56°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 72°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 67°F |
| A mix of cloudy and clear skies. Windy at times. |
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| Saturday, June 6th, 2026 |
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Overnight |
Temperature: 55°F |
| Clear with cloudy periods. |
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Morning |
Temperature: 60°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 82°F |
| Mostly sunny. Windy at times. |
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Evening |
Temperature: 75°F |
| Clear with cloudy periods. Slight chance of a thunderstorm. |
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| Sunday, June 7th, 2026 |
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Overnight |
Temperature: 62°F |
| Clear. |
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Morning |
Temperature: 56°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 67°F |
| Mostly sunny. Slight chance of a thunderstorm. Windy. |
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Evening |
Temperature: 52°F |
| A mix of cloudy and clear skies. Windy. |
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| Monday, June 8th, 2026 |
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Overnight |
Temperature: 46°F |
| A mix of clear and cloudy skies. Windy at times. |
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Morning |
Temperature: 50°F |
| Sunny. Windy. |
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Afternoon |
Temperature: 66°F |
| Mostly sunny. Wind 20 to 30 mph. |
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Evening |
Temperature: 63°F |
| Clear. Windy at times. |
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