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 Lewistown Weather Forecast Summary |
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Today
Jun 30th
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Wednesday
Jul 1st
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Thursday
Jul 2nd
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Friday
Jul 3rd
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Saturday
Jul 4th
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Mostly Sunny |
Mostly Sunny |
Mostly Sunny |
Mostly Sunny |
Sunny |
72°F
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75°F
55°F |
77°F
55°F |
79°F
57°F |
83°F
56°F |
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| Lewistown Detailed Weather Forecast |
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| Tuesday, June 30th, 2026 |
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Evening |
Temperature: 66°F |
| Mostly clear. Slight chance of a thunderstorm. Windy at times. |
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| Wednesday, July 1st, 2026 |
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Overnight |
Temperature: 55°F |
| Mostly clear. |
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Morning |
Temperature: 60°F |
| Sunny. |
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Afternoon |
Temperature: 69°F |
| A mix of sun and cloud with a slight chance of showers or thundershowers. |
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Evening |
Temperature: 65°F |
| A mix of cloudy and clear skies with a chance of showers. Slight chance of a thunderstorm. |
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| Thursday, July 2nd, 2026 |
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Overnight |
Temperature: 55°F |
| Clear with cloudy periods with a chance of showers. |
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Morning |
Temperature: 62°F |
| Sunny. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 77°F |
| Mostly sunny. Chance of a thunderstorm. |
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Evening |
Temperature: 65°F |
| Clear. Chance of a thunderstorm. Windy at times. |
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| Friday, July 3rd, 2026 |
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Overnight |
Temperature: 58°F |
| Mostly clear. Slight chance of a thunderstorm. |
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Morning |
Temperature: 63°F |
| A mix of sun and cloud. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 79°F |
| Mostly sunny. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 69°F |
| Mostly clear with a chance of showers or thundershowers. Windy at times. |
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| Saturday, July 4th, 2026 |
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Overnight |
Temperature: 59°F |
| Clear with a slight chance of showers or thundershowers. |
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Morning |
Temperature: 63°F |
| Sunny. |
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Afternoon |
Temperature: 81°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 76°F |
| Clear. |
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| Sunday, July 5th, 2026 |
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Overnight |
Temperature: 62°F |
| Clear. |
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Morning |
Temperature: 66°F |
| Sunny. |
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Afternoon |
Temperature: 84°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 76°F |
| Mostly clear with a slight chance of showers or thundershowers. Windy at times. |
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| Monday, July 6th, 2026 |
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Overnight |
Temperature: 60°F |
| Mostly clear with a slight chance of showers. |
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Morning |
Temperature: 66°F |
| Mostly sunny. |
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Afternoon |
Temperature: 83°F |
| Mostly sunny. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 79°F |
| Mostly clear with a slight chance of showers or thundershowers. Windy at times. |
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| Tuesday, July 7th, 2026 |
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Overnight |
Temperature: 69°F |
| Clear with cloudy periods. Slight chance of a thunderstorm. |
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Morning |
Temperature: 71°F |
| Mostly sunny. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 90°F |
| Sunny. Chance of a thunderstorm. |
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Evening |
Temperature: 79°F |
| Clear with cloudy periods with a chance of showers or thundershowers. Windy at times. |
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| Wednesday, July 8th, 2026 |
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Overnight |
Temperature: 68°F |
| Mostly clear with a chance of showers. |
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Morning |
Temperature: 75°F |
| Sunny. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 91°F |
| Sunny. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 83°F |
| Clear. Chance of a thunderstorm. Windy at times. |
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