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      Thunderstorm Advisory
      until 12:00 AM JST
      +1 more alert
      Elev 42 ft, 35.641 °N 139.600 °E

      Seijo, JP

      Setagaya-ku Station70°
      Updated: 1:14 AM JST on September 21, 2026 (GMT +9)
      10 minutes ago
      75°
      70°
      70
      Feels Like 71
      Heavy Rain
      N
      10
      Gusts 19 mph
      Similar 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
        Tonight
        Sun 09/20
        Low 70°f
         100% Precip. / 0.89 in
        Rain likely. Low around 70F. Winds N at 10 to 15 mph. Chance of rain 100%. Rainfall may reach one inch. Locally heavy rainfall possible.
        Tomorrow
        Mon 09/21
        High 77°f
         100% Precip. / 3.52 in
        Periods of rain. Rain becoming heavy at times in the afternoon. High 77F. Winds NNE at 15 to 25 mph. Chance of rain 100%. 3 to 5 inches of rain expected. Locally heavy rainfall possible.
        Tomorrow night
        Mon 09/21
        Low 75°f
         100% Precip. / 1.15 in
        Windy with rain, heavy at times, early. Clouds lingering overnight. Low near 75F. Winds NNW at 20 to 30 mph. Chance of rain 100%. Rainfall near an inch. Locally heavy rainfall possible.
        Hourly Forecast
        Now
        71°
        2AM
        93%
        71°
        3AM
        85%
        72°
        4AM
        99%
        72°
        5AM
        100%
        72°
        5:28AM
        Sunrise
        6AM
        100%
        72°
        7AM
        100%
        73°
        8AM
        99%
        73°
        9AM
        100%
        74°
        10AM
        100%
        74°
        11AM
        100%
        75°
        12PM
        100%
        75°
        1PM
        100%
        76°
        2PM
        100%
        75°
        3PM
        100%
        76°
        4PM
        100%
        76°
        5PM
        100%
        76°
        5:40PM
        Sunset
        6PM
        100%
        76°
        7PM
        100%
        76°
        8PM
        99%
        77°
        9PM
        91%
        77°
        10PM
        69%
        77°
        11PM
        45%
        78°
        12AM
        78°
        1AM
        78°
        Precipitation
        100%
        Rain likely to continue
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        19
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.72 in
        2. Visibility 0.66 miles
        3. Clouds Cloudy
        4. Dew Point70°F
        5. Humidity 96%
        6. Rainfall 5.36 in
        7. Snow Depth 0 in
         RJTF Station History
        Almanac for September 20, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 75°F 80°F 92°F 2024
        4. Low 70°F 67°F 59°F 1963
        5. Rain/Snow Depth
        6. Precipitation 0.89 in 0.3 in -
        7. Snow 0 in - in -
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 79°F 80°F 91°F
        4. Low 70°F 67°F 60°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 5:27 AM 5:42 PM
        3. Civil Twilight 5:02 AM 6:07 PM
        4. Nautical Twilight 4:32 AM 6:37PM
        5. Astronomical Twilight 4:01 AM 7:07 PM
        1. Length of Visible Light 13h 5m
        2. Length of Day 12h 14m
        3. Tomorrow will be 2 minutes 14 seconds shorter
        1. Moon 2:03 PM 11:35 PM
        2. Waxing Gibbous62% of the Moon is Illuminated
        Sep 27
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 11
        New Moon
        Oct 19
        Waxing Half First Qtr
        Precipitation
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