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      Thunderstorm Advisory
      until 6:00 AM JST
      Elev 2 ft, 37.159 °N 138.241 °E

      Joetsu-shi, JP

      Joetsu Station74°
      Updated: 8:02 AM JST on September 21, 2026 (GMT +9)
      3 minutes ago
      78°
      71°
      74
      Feels Like 75
      Cloudy
      N
      3
      Same 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
        Mon 09/21
        High 78°f
         93% Precip. / 0.21 in
        Cloudy with periods of rain. High 78F. Winds NNE at 5 to 10 mph. Chance of rain 90%. Rainfall around a quarter of an inch.
        Tonight
        Mon 09/21
        Low 71°f
         94% Precip. / 0.62 in
        Rain likely. Low 71F. Winds NNW at 10 to 15 mph. Chance of rain 90%. Rainfall around a half an inch.
        Tomorrow
        Tue 09/22
        High 78°f64°f
         62% Precip. / 0.02 in
        Light rain early. A mix of sun and clouds in the afternoon. High 78F. Winds NNW at 10 to 15 mph. Chance of rain 60%.
        Hourly Forecast
        Now
        75°
        9AM
        77°
        10AM
        77°
        11AM
        78°
        12PM
        39%
        78°
        1PM
        64%
        78°
        2PM
        69%
        78°
        3PM
        69%
        77°
        4PM
        67%
        77°
        5PM
        78%
        76°
        5:46PM
        Sunset
        6PM
        94%
        76°
        7PM
        95%
        76°
        8PM
        94%
        75°
        9PM
        90%
        75°
        10PM
        90%
        75°
        11PM
        88%
        74°
        12AM
        87%
        74°
        1AM
        87%
        74°
        2AM
        88%
        73°
        3AM
        83%
        73°
        4AM
        73%
        73°
        5AM
        69%
        72°
        5:34AM
        Sunrise
        6AM
        60%
        72°
        7AM
        63%
        72°
        8AM
        47%
        74°
        Precipitation
        95%
        Rain possible after 12 PM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        15
        Good
        UV Index
        1
        Low
        Additional Conditions
        1. Pressure 29.66 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point71°F
        5. Humidity 86%
        6. Rainfall 0.04 in
        7. Snow Depth 0 in
         RJSD Station History
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 78°F -°F -°F
        4. Low 71°F -°F -°F
        5. Rain/Snow Depth
        6. Precipitation 0.82 in - in -
        7. Snow 0 in - in -
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 78°F -°F -°F
        4. Low 71°F -°F -°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 5:32 AM 5:47 PM
        3. Civil Twilight 5:06 AM 6:13 PM
        4. Nautical Twilight 4:36 AM 6:44PM
        5. Astronomical Twilight 4:05 AM 7:15 PM
        1. Length of Visible Light 13h 6m
        2. Length of Day 12h 15m
        3. Tomorrow will be 2 minutes 21 seconds shorter
        1. Moon 2:14 PM 11:36 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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