My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Thunderstorm Advisory
      until 6:00 AM JST
      Elev 2 ft, 37.159 °N 138.241 °E

      Joetsu-shi, JP

      Joetsu Station78°
      Updated: 9:19 AM JST on September 21, 2026 (GMT +9)
      3 minutes ago
      78°
      71°
      78
      Feels Like 80
      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
         94% Precip. / 0.2 in
        Periods of rain. High 78F. Winds NNE at 5 to 10 mph. Chance of rain 90%. Rainfall near a quarter of an inch.
        Tonight
        Mon 09/21
        Low 71°f
         95% Precip. / 0.5 in
        Periods of rain. Low 71F. Winds NNW at 10 to 15 mph. Chance of rain 100%. Rainfall around a half an inch.
        Tomorrow
        Tue 09/22
        High 78°f64°f
         53% Precip. / 0.01 in
        Cloudy with light rain in the morning...then becoming partly cloudy. High 78F. Winds NNW at 10 to 15 mph. Chance of rain 50%.
        Hourly Forecast
        Now
        76°
        10AM
        77°
        11AM
        77°
        12PM
        37%
        77°
        1PM
        69%
        78°
        2PM
        84%
        78°
        3PM
        84%
        77°
        4PM
        67%
        77°
        5PM
        77%
        77°
        5:46PM
        Sunset
        6PM
        94%
        76°
        7PM
        95%
        76°
        8PM
        93%
        75°
        9PM
        86%
        75°
        10PM
        91%
        75°
        11PM
        88%
        74°
        12AM
        84%
        74°
        1AM
        85%
        74°
        2AM
        85%
        73°
        3AM
        77%
        73°
        4AM
        64%
        73°
        5AM
        64%
        72°
        5:34AM
        Sunrise
        6AM
        57%
        72°
        7AM
        53%
        72°
        8AM
        35%
        74°
        9AM
        75°
        Precipitation
        95%
        Rain possible after 12 PM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        17
        Good
        UV Index
        2
        Low
        Additional Conditions
        1. Pressure 29.67 in
        2. Visibility 9 miles
        3. Clouds Cloudy
        4. Dew Point71°F
        5. Humidity 84%
        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 0.7 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 5:33 AM 5:46 PM
        3. Civil Twilight 5:07 AM 6:12 PM
        4. Nautical Twilight 4:37 AM 6:42PM
        5. Astronomical Twilight 4:06 AM 7:13 PM
        1. Length of Visible Light 13h 4m
        2. Length of Day 12h 12m
        3. Tomorrow will be 2 minutes 22 seconds shorter
        1. Moon 2:54 PM -
        2. Waxing Gibbous72% 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
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareersWeather Data APIs
        PWS NetworkWundermap
        Terms of UsePrivacy PolicyCookie NoticeAccessibility StatementAdChoicesData Vendors
        essentialaccessibility.com
        We recognize our responsibility to use data and technology for good. We may use or share your data with our data vendors. Take control of your data.
        Review All Privacy and Ad Settings
        Choose how my information is shared
        Data Rights
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary