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      Flood Watch
      until 2:00 PM EDT
      Elev 122 ft, 41.342 °N 72.077 °W

      Groton, CT

      Trails Corner Station71°
      Updated: 10:43 AM EDT on September 12, 2026 (GMT -4)
      8 minutes ago
      74°
      54°
      71
      Feels Like 70
      Sunny
      N
      7
      Lower 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
        Sat 09/12
        High 74°f
         1% Precip. / 0 in
        Sunshine and a few clouds. High 74F. Winds SE at 5 to 10 mph.
        Tonight
        Sat 09/12
        Low 64°f
         24% Precip. / 0 in
        Partly cloudy this evening, then becoming cloudy after midnight. A stray shower or thunderstorm is possible. Low 64F. Winds SE at 5 to 10 mph.
        Tomorrow
        Sun 09/13
        High 72°f64°f
         99% Precip. / 2.22 in
        Periods of rain. Rain may be heavy late. High 72F. Winds ESE at 5 to 10 mph. Chance of rain 100%. 2 to 3 inches of rain expected. Localized flooding is possible.
        Hourly Forecast
        Now
        71°
        11AM
        72°
        12PM
        72°
        1PM
        72°
        2PM
        72°
        3PM
        72°
        4PM
        71°
        5PM
        70°
        6PM
        69°
        7PM
        67°
        7:02PM
        Sunset
        8PM
        66°
        9PM
        66°
        10PM
        65°
        11PM
        65°
        12AM
        65°
        1AM
        66°
        2AM
        66°
        3AM
        66°
        4AM
        67°
        5AM
        68°
        6AM
        34%
        69°
        6:26AM
        Sunrise
        7AM
        73%
        69°
        8AM
        69%
        70°
        9AM
        76%
        71°
        10AM
        87%
        71°
        Precipitation
        87%
        Pollen
        None
        Air Quality
        28
        Good
        UV Index
        5
        Moderate
        Additional Conditions
        1. Pressure 30.15 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point56°F
        5. Humidity 57%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KGON Station History
        Almanac for September 12, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 74°F 75°F 90°F 1961
        4. Low 54°F 59°F 40°F 1958
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.3 in -
        7. Snow 0 in 0 in -
        Almanac for September 13, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 72°F 75°F 86°F
        4. Low 54°F 59°F 43°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:25 AM 7:02 PM
        3. Civil Twilight 5:57 AM 7:30 PM
        4. Nautical Twilight 5:24 AM 8:03PM
        5. Astronomical Twilight 4:51 AM 8:37 PM
        1. Length of Visible Light 13h 32m
        2. Length of Day 12h 36m
        3. Tomorrow will be 2 minutes 43 seconds shorter
        1. Moon 8:02 AM 7:32 PM
        2. Waxing Crescent2% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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