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 Castine Weather Forecast Summary |
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Today
Aug 10th
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Tuesday
Aug 11th
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Wednesday
Aug 12th
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Thursday
Aug 13th
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Friday
Aug 14th
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Mostly Sunny |
Thundershowers |
Thundershowers |
Thundershowers |
Mostly Cloudy with Showers |
87°F
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86°F
66°F |
84°F
65°F |
82°F
64°F |
77°F
65°F |
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| Castine Detailed Weather Forecast |
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| Monday, August 10th, 2026 |
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Afternoon |
Temperature: 86°F |
| Mostly sunny. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 78°F |
| Mostly clear with a chance of showers or thundershowers. Windy at times. |
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| Tuesday, August 11th, 2026 |
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Overnight |
Temperature: 73°F |
| Clear with cloudy periods with a chance of showers or thundershowers. Windy at times. |
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Morning |
Temperature: 77°F |
| Mostly sunny with a chance of showers or thundershowers. Windy at times. |
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Afternoon |
Temperature: 78°F |
| A mix of sun and cloud with a few showers. Chance of a thunderstorm. Windy. |
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Evening |
Temperature: 67°F |
| Mostly clear with a few showers. |
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| Wednesday, August 12th, 2026 |
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Overnight |
Temperature: 67°F |
| Mostly cloudy with a few showers. |
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Morning |
Temperature: 72°F |
| A mix of sun and cloud with a chance of showers or thundershowers. |
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Afternoon |
Temperature: 83°F |
| Sunny. Chance of a thunderstorm. |
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Evening |
Temperature: 66°F |
| Clear with cloudy periods with rain. |
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| Thursday, August 13th, 2026 |
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Overnight |
Temperature: 65°F |
| Clear. |
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Morning |
Temperature: 71°F |
| Mostly sunny. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 82°F |
| A mix of cloud and sun. Chance of a thunderstorm. |
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Evening |
Temperature: 70°F |
| Cloudy with periods of rain. Slight chance of a thunderstorm. Windy at times. |
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| Friday, August 14th, 2026 |
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Overnight |
Temperature: 68°F |
| Mostly cloudy with a few showers. |
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Morning |
Temperature: 70°F |
| Mostly sunny with a chance of showers. |
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Afternoon |
Temperature: 77°F |
| A mix of sun and cloud. Slight chance of a thunderstorm. |
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Evening |
Temperature: 69°F |
| Mostly clear. |
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| Saturday, August 15th, 2026 |
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Overnight |
Temperature: 60°F |
| Clear. |
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Morning |
Temperature: 66°F |
| Sunny. |
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Afternoon |
Temperature: 79°F |
| Mostly sunny. Slight chance of a thunderstorm. |
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Evening |
Temperature: 74°F |
| Clear with a chance of showers or thundershowers. |
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| Sunday, August 16th, 2026 |
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Overnight |
Temperature: 72°F |
| Clear with a slight chance of showers or thundershowers. |
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Morning |
Temperature: 78°F |
| Sunny. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 86°F |
| Sunny with cloudy periods. Chance of a thunderstorm. |
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Evening |
Temperature: 75°F |
| Mostly clear. Chance of a thunderstorm. |
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| Monday, August 17th, 2026 |
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Overnight |
Temperature: 67°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 64°F |
| Cloudy with a chance of showers. |
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Afternoon |
Temperature: 67°F |
| Mostly cloudy with showers likely. |
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Evening |
Temperature: 66°F |
| Mostly clear. |
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| Tuesday, August 18th, 2026 |
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Overnight |
Temperature: 58°F |
| Clear. |
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Morning |
Temperature: 64°F |
| Sunny. |
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Afternoon |
Temperature: 75°F |
| Mostly sunny. |
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Evening |
Temperature: 67°F |
| Clear. |
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