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 Portsmouth Weather Forecast Summary |
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Today
Sep 6th
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Monday
Sep 7th
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Tuesday
Sep 8th
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Wednesday
Sep 9th
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Thursday
Sep 10th
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Mostly Sunny |
Mostly Sunny |
Mostly Sunny |
Mostly Sunny |
Mix of Sun and Cloud |
83°F
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87°F
58°F |
88°F
64°F |
92°F
70°F |
76°F
69°F |
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| Portsmouth Detailed Weather Forecast |
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| Monday, September 7th, 2026 |
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Overnight |
Temperature: 59°F |
| Clear. |
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Morning |
Temperature: 70°F |
| Mostly sunny. |
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Afternoon |
Temperature: 87°F |
| A mix of sun and cloud. |
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Evening |
Temperature: 71°F |
| Clear. |
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| Tuesday, September 8th, 2026 |
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Overnight |
Temperature: 65°F |
| Mostly clear. |
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Morning |
Temperature: 73°F |
| Mostly sunny. |
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Afternoon |
Temperature: 84°F |
| Sunny with cloudy periods. |
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Evening |
Temperature: 73°F |
| Clear. |
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| Wednesday, September 9th, 2026 |
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Overnight |
Temperature: 70°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 77°F |
| Sunny. |
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Afternoon |
Temperature: 89°F |
| A mix of sun and cloud. Windy at times. |
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Evening |
Temperature: 79°F |
| Clear. |
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| Thursday, September 10th, 2026 |
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Overnight |
Temperature: 74°F |
| Clear with cloudy periods. |
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Morning |
Temperature: 73°F |
| A mix of sun and cloud with a chance of showers. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 73°F |
| A mix of sun and cloud with a chance of showers. Slight chance of a thunderstorm. |
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Evening |
Temperature: 70°F |
| A mix of cloudy and clear skies with showers likely. Chance of a thunderstorm. |
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| Friday, September 11th, 2026 |
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Overnight |
Temperature: 64°F |
| A mix of cloudy and clear skies with a chance of showers. |
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Morning |
Temperature: 69°F |
| Sunny. |
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Afternoon |
Temperature: 86°F |
| Sunny. |
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Evening |
Temperature: 73°F |
| Clear with cloudy periods. |
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| Saturday, September 12th, 2026 |
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Overnight |
Temperature: 67°F |
| Mostly clear. |
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Morning |
Temperature: 73°F |
| A mix of cloud and sun. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 85°F |
| A mix of cloud and sun. Chance of a thunderstorm. |
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Evening |
Temperature: 74°F |
| Mostly clear. Chance of a thunderstorm. |
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| Sunday, September 13th, 2026 |
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Overnight |
Temperature: 71°F |
| Clear with cloudy periods. |
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Morning |
Temperature: 78°F |
| Sunny. Chance of a thunderstorm. |
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Afternoon |
Temperature: 91°F |
| Sunny with cloudy periods. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 78°F |
| Mostly clear. Chance of a thunderstorm. |
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| Monday, September 14th, 2026 |
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Overnight |
Temperature: 72°F |
| Mostly clear with a slight chance of showers. |
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Morning |
Temperature: 76°F |
| Mostly sunny. Slight chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 66°F |
| Mostly cloudy with a chance of showers. |
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Evening |
Temperature: 57°F |
| Clear with a chance of showers. |
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