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      Flood Watch
      until 12:00 PM EDT
      Elev 12 ft, 39.863 °N 75.379 °W

      Chester, PA

      Brookhaven Station82°
      Updated: 4:40 PM EDT on September 12, 2026 (GMT -4)
      4 minutes ago
      83°
      60°
      82
      Feels Like 86
      Mostly Cloudy
      N
      11
      Gusts 17 mph
      Similar temperature is expected tomorrow
      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
        Tonight
        Sat 09/12
        Low 72°f
         75% Precip. / 0.36 in
        Rain showers this evening with numerous thunderstorms developing overnight. Low 72F. Winds SE at 10 to 15 mph. Chance of rain 80%. Locally heavy rainfall possible.
        Tomorrow
        Sun 09/13
        High 85°f
         79% Precip. / 0.05 in
        Rain showers early with some sunshine later in the day. High near 85F. Winds WNW at 5 to 10 mph. Chance of rain 80%.
        Tomorrow night
        Sun 09/13
        Low 71°f
         23% Precip. / 0 in
        Generally fair. Slight chance of a rain shower. Low 71F. Winds WNW at 5 to 10 mph.
        Hourly Forecast
        Now
        80°
        5PM
        80°
        6PM
        79°
        7PM
        78°
        7:15PM
        Sunset
        8PM
        76°
        9PM
        75°
        10PM
        74°
        11PM
        74°
        12AM
        40%
        74°
        1AM
        59%
        74°
        2AM
        56%
        73°
        3AM
        53%
        74°
        4AM
        57%
        74°
        5AM
        76%
        74°
        6AM
        75%
        74°
        6:40AM
        Sunrise
        7AM
        79%
        74°
        8AM
        39%
        74°
        9AM
        30%
        75°
        10AM
        41%
        76°
        11AM
        31%
        78°
        12PM
        79°
        1PM
        81°
        2PM
        82°
        3PM
        84°
        4PM
        83°
        Precipitation
        79%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        33
        Good
        UV Index
        1
        Low
        Additional Conditions
        1. Pressure 30.03 in
        2. Visibility 10 miles
        3. Clouds Mostly Cloudy
        4. Dew Point63°F
        5. Humidity 55%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KPHL Station History
        Almanac for September 12, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 83°F 82°F 99°F 1931
        4. Low 60°F 63°F 50°F 1967
        5. Rain/Snow Depth
        6. Precipitation 0.36 in - in -
        7. Snow 0 in - in -
        Almanac for September 13, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 85°F 81°F 95°F
        4. Low 60°F 63°F 49°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:39 AM 7:14 PM
        3. Civil Twilight 6:12 AM 7:42 PM
        4. Nautical Twilight 5:40 AM 8:14PM
        5. Astronomical Twilight 5:07 AM 8:47 PM
        1. Length of Visible Light 13h 29m
        2. Length of Day 12h 35m
        3. Tomorrow will be 2 minutes 35 seconds shorter
        1. Moon 8:15 AM 7:47 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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