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      Elev 60 ft, 43.080 °N 70.765 °W

      Portsmouth, NH

      Updated: 10:31 AM EDT on September 4, 2026 (GMT -4)
      4 minutes ago
      80°
      62°
      75
      Feels Like 76
      Partly Cloudy
      N
      3
      Higher temperature is expected today
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Today
        Fri 09/04
        High 80°f
        15% Precip. / 0 in
        Sunshine and clouds mixed. High around 80F. Winds light and variable.
        Tonight
        Fri 09/04
        Low 61°f
        6% Precip. / 0 in
        Partly cloudy. Low 61F. Winds light and variable.
        Tomorrow
        Sat 09/05
        High 71°f56°f
        24% Precip. / 0 in
        Cloudy. High 71F. Winds NNE at 5 to 10 mph.
        Hourly Forecast
        Now
        73°
        11AM
        75°
        12PM
        77°
        1PM
        78°
        2PM
        77°
        3PM
        78°
        4PM
        79°
        5PM
        78°
        6PM
        77°
        7PM
        74°
        7:12PM
        Sunset
        8PM
        72°
        9PM
        70°
        10PM
        69°
        11PM
        67°
        12AM
        66°
        1AM
        65°
        2AM
        65°
        3AM
        64°
        4AM
        64°
        5AM
        62°
        6AM
        62°
        6:11AM
        Sunrise
        7AM
        63°
        8AM
        66°
        9AM
        67°
        10AM
        69°
        Additional Conditions
        1. Pressure 29.81 in
        2. Visibility 9 miles
        3. Clouds Partly Cloudy
        4. Dew Point66°F
        5. Humidity 77%
        6. Rainfall 0.01 in
        7. Snow Depth 0 in
        KPSM Station History
        Almanac for September 4, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 80°F 76°F 91°F 2018
        4. Low 62°F 56°F 36°F 1989
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.6 in -
        7. Snow 0 in 0 in -
        Almanac for September 5, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 71°F 76°F 90°F
        4. Low 62°F 55°F 36°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:10 AM 7:12 PM
        3. Civil Twilight 5:41 AM 7:41 PM
        4. Nautical Twilight 5:06 AM 8:16PM
        5. Astronomical Twilight 4:30 AM 8:52 PM
        1. Length of Visible Light 13h 59m
        2. Length of Day 13h 1m
        3. Tomorrow will be 2 minutes 51 seconds shorter
        1. Moon 11:17 PM 2:52 PM
        2. Last Quarter40% of the Moon is Illuminated
        Sep 4
        Waning Half Last Qtr
        Sep 10
        New Moon
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Precipitation
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        Weather Alerts
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