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 Port Jefferson Weather Forecast Summary |
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Today
Aug 13th
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Thursday
Aug 14th
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Friday
Aug 15th
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Saturday
Aug 16th
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Sunday
Aug 17th
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Thundershowers |
Sunny |
Sunny |
Cloudy |
Thundershowers |
82°F
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81°F
66°F |
83°F
64°F |
85°F
66°F |
87°F
71°F |
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| Port Jefferson Detailed Weather Forecast |
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| Wednesday, August 13th, 2025 |
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Morning |
Temperature: 79°F |
| Sunny with cloudy periods with a chance of showers or thundershowers. |
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Afternoon |
Temperature: 78°F |
| Sunny with showers likely. Chance of a thunderstorm. |
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Evening |
Temperature: 68°F |
| Clear. Slight chance of a thunderstorm. |
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| Thursday, August 14th, 2025 |
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Overnight |
Temperature: 67°F |
| Clear. |
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Morning |
Temperature: 78°F |
| Sunny. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 78°F |
| Sunny. Chance of a thunderstorm. |
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Evening |
Temperature: 67°F |
| Clear. |
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| Friday, August 15th, 2025 |
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Overnight |
Temperature: 65°F |
| Clear. |
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Morning |
Temperature: 79°F |
| Sunny. |
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Afternoon |
Temperature: 79°F |
| Sunny. Chance of a thunderstorm. |
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Evening |
Temperature: 69°F |
| Clear. |
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| Saturday, August 16th, 2025 |
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Overnight |
Temperature: 67°F |
| Clear. |
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Morning |
Temperature: 81°F |
| Sunny. Chance of a thunderstorm. |
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Afternoon |
Temperature: 81°F |
| Sunny. Chance of a thunderstorm. |
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Evening |
Temperature: 72°F |
| Cloudy. Slight chance of a thunderstorm. |
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| Sunday, August 17th, 2025 |
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Overnight |
Temperature: 72°F |
| A mix of cloudy and clear skies. Slight chance of a thunderstorm. |
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Morning |
Temperature: 84°F |
| Cloudy with showers likely. Chance of a thunderstorm. |
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Afternoon |
Temperature: 84°F |
| Cloudy with a slight chance of showers or thundershowers. |
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Evening |
Temperature: 75°F |
| Clear with cloudy periods. Chance of a thunderstorm. |
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| Monday, August 18th, 2025 |
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Overnight |
Temperature: 73°F |
| Clear. Chance of a thunderstorm. |
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Morning |
Temperature: 86°F |
| Sunny. Chance of a thunderstorm. |
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Afternoon |
Temperature: 86°F |
| Mostly sunny. Chance of a thunderstorm. |
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Evening |
Temperature: 77°F |
| Clear with cloudy periods. Chance of a thunderstorm. |
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| Tuesday, August 19th, 2025 |
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Overnight |
Temperature: 73°F |
| Cloudy. Chance of a thunderstorm. |
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Morning |
Temperature: 77°F |
| Cloudy. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 75°F |
| Sunny with cloudy periods. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 62°F |
| Mostly clear. |
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| Wednesday, August 20th, 2025 |
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Overnight |
Temperature: 61°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 73°F |
| A mix of cloud and sun. Windy at times. |
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Afternoon |
Temperature: 72°F |
| A mix of cloud and sun. Windy at times. |
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Evening |
Temperature: 58°F |
| Clear. |
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| Thursday, August 21st, 2025 |
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Overnight |
Temperature: 54°F |
| Clear. |
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Morning |
Temperature: 70°F |
| Sunny. |
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Afternoon |
Temperature: 71°F |
| Sunny. |
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Evening |
Temperature: 57°F |
| Clear. |
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