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 Lewistown Weather Forecast Summary |
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Today
Jun 21st
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Monday
Jun 22nd
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Tuesday
Jun 23rd
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Wednesday
Jun 24th
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Thursday
Jun 25th
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Mix of Sun and Cloud |
Mix of Cloud and Sun |
Mostly Sunny |
Mostly Sunny |
Thundershowers |
67°F
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59°F
50°F |
68°F
42°F |
74°F
49°F |
74°F
54°F |
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| Lewistown Detailed Weather Forecast |
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| Sunday, June 21st, 2026 |
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Afternoon |
Temperature: 65°F |
| Sunny. Windy. |
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Evening |
Temperature: 61°F |
| A mix of cloudy and clear skies with a chance of showers. Windy at times. |
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| Monday, June 22nd, 2026 |
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Overnight |
Temperature: 52°F |
| Mostly cloudy with a chance of showers. |
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Morning |
Temperature: 51°F |
| A mix of cloud and sun with a chance of showers. |
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Afternoon |
Temperature: 53°F |
| A mix of cloud and sun with a chance of showers. Slight chance of a thunderstorm. |
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Evening |
Temperature: 55°F |
| Clear with cloudy periods with a slight chance of showers. Windy at times. |
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| Tuesday, June 23rd, 2026 |
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Overnight |
Temperature: 44°F |
| Clear. |
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Morning |
Temperature: 48°F |
| Sunny. |
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Afternoon |
Temperature: 66°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 62°F |
| A mix of clear and cloudy skies. |
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| Wednesday, June 24th, 2026 |
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Overnight |
Temperature: 51°F |
| A mix of clear and cloudy skies. |
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Morning |
Temperature: 55°F |
| Sunny. |
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Afternoon |
Temperature: 71°F |
| Sunny with cloudy periods. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 66°F |
| A mix of cloudy and clear skies. Slight chance of a thunderstorm. |
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| Thursday, June 25th, 2026 |
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Overnight |
Temperature: 56°F |
| Mostly clear with a slight chance of showers. |
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Morning |
Temperature: 61°F |
| Mostly sunny. Chance of a thunderstorm. |
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Afternoon |
Temperature: 68°F |
| Mostly cloudy with showers likely. Chance of a thunderstorm. Windy. |
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Evening |
Temperature: 62°F |
| Mostly clear with a few showers. |
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| Friday, June 26th, 2026 |
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Overnight |
Temperature: 56°F |
| Mostly clear. |
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Morning |
Temperature: 63°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 77°F |
| Sunny with cloudy periods. |
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Evening |
Temperature: 73°F |
| A mix of cloudy and clear skies. Windy at times. |
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| Saturday, June 27th, 2026 |
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Overnight |
Temperature: 61°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 61°F |
| A mix of cloud and sun with a slight chance of showers. Windy at times. |
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Afternoon |
Temperature: 67°F |
| A mix of cloud and sun with a slight chance of showers or thundershowers. Windy. |
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Evening |
Temperature: 58°F |
| Cloudy with clear periods with a slight chance of showers. Windy. |
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| Sunday, June 28th, 2026 |
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Overnight |
Temperature: 50°F |
| Clear. Windy. |
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Morning |
Temperature: 47°F |
| A mix of cloud and sun with a chance of showers. Wind 20 to 30 mph. |
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Afternoon |
Temperature: 51°F |
| Mostly cloudy with a chance of showers. Wind 20 to 30 mph. |
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Evening |
Temperature: 51°F |
| Cloudy. Wind 20 to 30 mph. |
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| Monday, June 29th, 2026 |
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Overnight |
Temperature: 53°F |
| A mix of cloudy and clear skies. Windy. |
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Morning |
Temperature: 55°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 67°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 65°F |
| Clear with cloudy periods. Slight chance of a thunderstorm. Windy at times. |
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