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      Small Craft Advisory
      until 2:00 AM EDT
      Elev 19 ft, 42.365 °N 71.236 °W

      Waltham, MA

      Southside Station44°
      Updated: 7:05 AM EDT on October 21, 2026 (GMT -4)
      2 minutes ago
      57°
      43°
      44
      Feels Like 44
      Partly Cloudy
      N
      8
      Gusts 16 mph
      Lower 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
        Wed 10/21
        High 57°f
         2% Precip. / 0 in
        Partly cloudy. High 57F. Winds NNE at 10 to 20 mph.
        Tonight
        Wed 10/21
        Low 43°f
         3% Precip. / 0 in
        Cloudy. Low 43F. Winds NNE at 5 to 10 mph.
        Tomorrow
        Thu 10/22
        High 64°f37°f
         1% Precip. / 0 in
        Cloudy skies early, then partly cloudy in the afternoon. Warmer. High 64F. Winds N at 10 to 15 mph.
        Hourly Forecast
        Now
        44°
        8AM
        46°
        9AM
        48°
        10AM
        51°
        11AM
        52°
        12PM
        54°
        1PM
        55°
        2PM
        55°
        3PM
        56°
        4PM
        55°
        5PM
        54°
        5:53PM
        Sunset
        6PM
        51°
        7PM
        49°
        8PM
        48°
        9PM
        47°
        10PM
        47°
        11PM
        47°
        12AM
        47°
        1AM
        46°
        2AM
        46°
        3AM
        46°
        4AM
        45°
        5AM
        45°
        6AM
        45°
        7AM
        44°
        Precipitation
        4%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        21
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.29 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point35°F
        5. Humidity 69%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KBED Station History
        Almanac for October 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 57°F 60°F 81°F 1979
        4. Low 43°F 39°F 19°F 1972
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.9 in -
        7. Snow 0 in 0 in -
        Almanac for October 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 64°F 60°F 86°F
        4. Low 43°F 39°F 22°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:04 AM 5:53 PM
        3. Civil Twilight 6:36 AM 6:22 PM
        4. Nautical Twilight 6:03 AM 6:54PM
        5. Astronomical Twilight 5:31 AM 7:27 PM
        1. Length of Visible Light 11h 45m
        2. Length of Day 10h 48m
        3. Tomorrow will be 2 minutes 41 seconds shorter
        1. Moon 3:42 PM 1:52 AM
        2. Waxing Gibbous78% of the Moon is Illuminated
        Oct 26
        Full Moon
        Nov 1
        Waning Half Last Qtr
        Nov 9
        New Moon
        Nov 17
        Waxing Half First Qtr
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