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 Lewistown Weather Forecast Summary |
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Today
May 22nd
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Saturday
May 23rd
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Sunday
May 24th
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Monday
May 25th
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Tuesday
May 26th
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Mostly Sunny |
Mix of Sun and Cloud |
Mostly Sunny |
Mostly Sunny |
Mostly Sunny |
61°F
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70°F
46°F |
75°F
53°F |
82°F
57°F |
85°F
59°F |
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| Lewistown Detailed Weather Forecast |
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| Friday, May 22nd, 2026 |
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Morning |
Temperature: 45°F |
| Sunny. |
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Afternoon |
Temperature: 59°F |
| Sunny. |
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Evening |
Temperature: 57°F |
| Cloudy with clear periods. |
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| Saturday, May 23rd, 2026 |
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Overnight |
Temperature: 48°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 53°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 68°F |
| Sunny with cloudy periods. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 64°F |
| Clear with cloudy periods. Slight chance of a thunderstorm. |
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| Sunday, May 24th, 2026 |
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Overnight |
Temperature: 55°F |
| Clear. |
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Morning |
Temperature: 59°F |
| Mostly sunny. Windy. |
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Afternoon |
Temperature: 73°F |
| Mostly sunny. Windy at times. |
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Evening |
Temperature: 69°F |
| Mostly clear. |
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| Monday, May 25th, 2026 |
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Overnight |
Temperature: 58°F |
| Mostly clear. |
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Morning |
Temperature: 64°F |
| Mostly sunny. |
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Afternoon |
Temperature: 81°F |
| Mostly sunny. |
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Evening |
Temperature: 73°F |
| Mostly clear. Slight chance of a thunderstorm. Windy at times. |
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| Tuesday, May 26th, 2026 |
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Overnight |
Temperature: 63°F |
| Clear. |
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Morning |
Temperature: 69°F |
| Mostly sunny. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 83°F |
| Mostly sunny. Slight chance of a thunderstorm. Windy. |
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Evening |
Temperature: 72°F |
| A mix of clear and cloudy skies with a slight chance of showers or thundershowers. Windy. |
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| Wednesday, May 27th, 2026 |
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Overnight |
Temperature: 55°F |
| Mostly cloudy with a slight chance of showers. Windy at times. |
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Morning |
Temperature: 55°F |
| Mostly sunny. Windy at times. |
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Afternoon |
Temperature: 69°F |
| A mix of cloud and sun with a chance of showers or thundershowers. Windy at times. |
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Evening |
Temperature: 65°F |
| A mix of clear and cloudy skies with a chance of showers or thundershowers. |
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| Thursday, May 28th, 2026 |
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Overnight |
Temperature: 55°F |
| Mostly clear with a few showers. |
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Morning |
Temperature: 57°F |
| Mostly sunny. |
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Afternoon |
Temperature: 67°F |
| Cloudy with sunny periods. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 69°F |
| Mostly clear. Chance of a thunderstorm. |
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| Friday, May 29th, 2026 |
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Overnight |
Temperature: 61°F |
| A mix of clear and cloudy skies. Slight chance of a thunderstorm. |
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Morning |
Temperature: 64°F |
| Sunny with cloudy periods. Chance of a thunderstorm. |
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Afternoon |
Temperature: 79°F |
| Sunny. Chance of a thunderstorm. Windy. |
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Evening |
Temperature: 71°F |
| Mostly clear with a chance of showers or thundershowers. Windy. |
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| Saturday, May 30th, 2026 |
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Overnight |
Temperature: 59°F |
| Mostly clear with a chance of showers. Slight chance of a thunderstorm. |
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Morning |
Temperature: 62°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 73°F |
| A mix of cloud and sun. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 58°F |
| A mix of cloudy and clear skies with showers likely. Windy. |
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