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 Port Jefferson Weather Forecast Summary |
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Today
Sep 11th
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Friday
Sep 12th
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Saturday
Sep 13th
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Sunday
Sep 14th
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Monday
Sep 15th
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Mix of Cloud and Sun |
Cloudy |
Cloudy |
Cloudy |
Cloudy |
74°F
|
70°F
65°F |
73°F
66°F |
75°F
69°F |
74°F
65°F |
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| Port Jefferson Detailed Weather Forecast |
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| Thursday, September 11th, 2025 |
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Morning |
Temperature: 69°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 73°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 68°F |
| Clear. Windy at times. |
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| Friday, September 12th, 2025 |
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Overnight |
Temperature: 66°F |
| Clear with cloudy periods. Windy at times. |
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Morning |
Temperature: 67°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 68°F |
| Sunny with cloudy periods. Windy at times. |
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Evening |
Temperature: 66°F |
| Cloudy. Windy at times. |
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| Saturday, September 13th, 2025 |
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Overnight |
Temperature: 66°F |
| Cloudy. |
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Morning |
Temperature: 72°F |
| Mostly sunny. |
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Afternoon |
Temperature: 70°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 68°F |
| Cloudy. Windy at times. |
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| Sunday, September 14th, 2025 |
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Overnight |
Temperature: 69°F |
| Cloudy. |
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Morning |
Temperature: 72°F |
| Sunny. |
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Afternoon |
Temperature: 73°F |
| Cloudy. |
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Evening |
Temperature: 70°F |
| Cloudy. |
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| Monday, September 15th, 2025 |
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Overnight |
Temperature: 67°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 72°F |
| Cloudy. |
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Afternoon |
Temperature: 71°F |
| Cloudy. |
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Evening |
Temperature: 66°F |
| A mix of cloudy and clear skies. |
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| Tuesday, September 16th, 2025 |
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Overnight |
Temperature: 66°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 70°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 69°F |
| Cloudy. |
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Evening |
Temperature: 65°F |
| Cloudy. |
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| Wednesday, September 17th, 2025 |
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Overnight |
Temperature: 66°F |
| Cloudy. |
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Morning |
Temperature: 71°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 69°F |
| Cloudy. |
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Evening |
Temperature: 66°F |
| Clear with cloudy periods. |
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| Thursday, September 18th, 2025 |
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Overnight |
Temperature: 66°F |
| Clear. Windy at times. |
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Morning |
Temperature: 70°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 70°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 66°F |
| Clear with cloudy periods. Windy at times. |
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| Friday, September 19th, 2025 |
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Overnight |
Temperature: 65°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 68°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 69°F |
| Cloudy. |
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Evening |
Temperature: 68°F |
| Cloudy. |
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