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      Elev 240 ft, 41.350 °N 72.012 °W

      Groton, CT

      Groton Station59°
      Updated: 12:49 PM EDT on October 18, 2026 (GMT -4)
      9 minutes ago
      56°
      33°
      59
      Feels Like 59
      Sunny
      N
      4
      Higher temperature is expected today
      Wundermap

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       Wundermap
      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
        Sun 10/18
        High 56°f
         1% Precip. / 0 in
        Sunny. High 56F. Winds light and variable.
        Tonight
        Sun 10/18
        Low 38°f
         5% Precip. / 0 in
        Clear skies. Low 38F. Winds light and variable.
        Tomorrow
        Mon 10/19
        High 62°f46°f
         6% Precip. / 0 in
        Sunny along with a few clouds. High 62F. Winds NE at 10 to 20 mph.
        Hourly Forecast
        Now
        53°
        1PM
        53°
        2PM
        54°
        3PM
        55°
        4PM
        55°
        5PM
        53°
        6PM
        50°
        6:02PM
        Sunset
        7PM
        47°
        8PM
        46°
        9PM
        44°
        10PM
        44°
        11PM
        43°
        12AM
        42°
        1AM
        41°
        2AM
        41°
        3AM
        40°
        4AM
        40°
        5AM
        39°
        6AM
        39°
        7AM
        39°
        7:04AM
        Sunrise
        8AM
        41°
        9AM
        46°
        10AM
        51°
        11AM
        55°
        12PM
        57°
        Precipitation
        6%
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        20
        Good
        UV Index
        4
        Moderate
        Additional Conditions
        1. Pressure 30.55 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point25°F
        5. Humidity 33%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KGON Station History
        Almanac for October 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 56°F 63°F 73°F 2016
        4. Low 33°F 46°F 24°F 1978
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.7 in -
        7. Snow 0 in 0 in -
        Almanac for October 19, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 62°F 62°F 79°F
        4. Low 38°F 46°F 25°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:03 AM 6:02 PM
        3. Civil Twilight 6:35 AM 6:30 PM
        4. Nautical Twilight 6:03 AM 7:02PM
        5. Astronomical Twilight 5:31 AM 7:34 PM
        1. Length of Visible Light 11h 55m
        2. Length of Day 10h 59m
        3. Tomorrow will be 2 minutes 37 seconds shorter
        1. Moon 2:25 PM 11:48 PM
        2. First Quarter51% of the Moon is Illuminated
        Oct 18
        Waxing Half First Qtr
        Oct 26
        Full Moon
        Nov 1
        Waning Half Last Qtr
        Nov 9
        New Moon
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