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      Flood Watch
      until 12:00 PM EDT
      Elev 154 ft, 39.688 °N 74.999 °W

      Williamstown, NJ

      Robanna Station72°
      Updated: 6:59 AM EDT on September 13, 2026 (GMT -4)
      2 minutes ago
      83°
      69°
      72
      Feels Like 72
      Rain
      N
      2
      Similar 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
        Sun 09/13
        High 83°f
         100% Precip. / 0.15 in
        Thunderstorms during the morning hours, then skies turning partly cloudy during the afternoon. High 83F. Winds W at 5 to 10 mph. Chance of rain 100%.
        Tonight
        Sun 09/13
        Low 69°f
         15% Precip. / 0 in
        Some clouds. Low 69F. Winds W at 5 to 10 mph.
        Tomorrow
        Mon 09/14
        High 76°f54°f
         8% Precip. / 0 in
        Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 76F. Winds NNW at 10 to 15 mph.
        Hourly Forecast
        Now
        72°
        7AM
        100%
        72°
        8AM
        61%
        73°
        9AM
        74°
        10AM
        75°
        11AM
        75°
        12PM
        77°
        1PM
        79°
        2PM
        80°
        3PM
        81°
        4PM
        82°
        5PM
        82°
        6PM
        82°
        7PM
        80°
        7:11PM
        Sunset
        8PM
        77°
        9PM
        76°
        10PM
        75°
        11PM
        74°
        12AM
        73°
        1AM
        72°
        2AM
        72°
        3AM
        72°
        4AM
        72°
        5AM
        72°
        6AM
        71°
        Precipitation
        100%
        Storms continuing through 9 AM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        29
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.91 in
        2. Visibility 4 miles
        3. Clouds Cloudy
        4. Dew Point71°F
        5. Humidity 95%
        6. Rainfall 0.06 in
        7. Snow Depth 0 in
         KPHL Station History
        Almanac for September 13, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 83°F 80°F 90°F 1983
        4. Low 69°F 61°F 40°F 2002
        5. Rain/Snow Depth
        6. Precipitation 0.15 in - in -
        7. Snow 0 in - in -
        Almanac for September 14, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 76°F 80°F 90°F
        4. Low 69°F 61°F 39°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:39 AM 7:11 PM
        3. Civil Twilight 6:12 AM 7:38 PM
        4. Nautical Twilight 5:40 AM 8:10PM
        5. Astronomical Twilight 5:07 AM 8:43 PM
        1. Length of Visible Light 13h 26m
        2. Length of Day 12h 32m
        3. Tomorrow will be 2 minutes 34 seconds shorter
        1. Moon 9:20 AM 8:10 PM
        2. Waxing Crescent6% 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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