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      Elev 499 ft, 40.228 °N 76.570 °W

      South Londonderry Township, PA

      Upper Lawn Station72°
      Updated: 12:01 AM EDT on September 2, 2026 (GMT -4)
      9 minutes ago
      93°
      70°
      72
      Feels Like 74
      Rain
      N
      4
      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
        Tonight
        Tue 09/01
        Low 69°f
         100% Precip. / 0.02 in
        Thunderstorms early, then cloudy skies after midnight. Low 69F. Winds light and variable. Chance of rain 100%.
        Tomorrow
        Wed 09/02
        High 79°f
         42% Precip. / 0.01 in
        Showers in the morning, then cloudy in the afternoon. High 79F. Winds ESE at 5 to 10 mph. Chance of rain 40%.
        Tomorrow night
        Wed 09/02
        Low 69°f
         65% Precip. / 0.33 in
        Scattered thunderstorms. A few storms may be severe. Low 69F. Winds SSE at 5 to 10 mph. Chance of rain 70%.
        Hourly Forecast
        Now
        72°
        1AM
        72°
        2AM
        72°
        3AM
        71°
        4AM
        72°
        5AM
        71°
        6AM
        71°
        6:34AM
        Sunrise
        7AM
        70°
        8AM
        72°
        9AM
        73°
        10AM
        33%
        73°
        11AM
        42%
        74°
        12PM
        74°
        1PM
        75°
        2PM
        76°
        3PM
        77°
        4PM
        78°
        5PM
        79°
        6PM
        78°
        7PM
        77°
        7:36PM
        Sunset
        8PM
        74°
        9PM
        61%
        74°
        10PM
        66%
        73°
        11PM
        44%
        73°
        12AM
        44%
        72°
        Precipitation
        66%
        Storms likely to end around 12:45 AM
        Pollen
        Grass Pollen
        Low
        Air Quality
        58
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.98 in
        2. Visibility 7 miles
        3. Clouds Mostly Cloudy
        4. Dew Point70°F
        5. Humidity 93%
        6. Rainfall 0.65 in
        7. Snow Depth 0 in
         KMDT Station History
        Almanac for September 2, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 93°F 80°F 94°F 2010
        4. Low 70°F 60°F 45°F 1987
        5. Rain/Snow Depth
        6. Precipitation 0.02 in 3.6 in -
        7. Snow 0 in 0 in -
        Almanac for September 3, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 79°F 80°F 93°F
        4. Low 70°F 60°F 42°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:34 AM 7:36 PM
        3. Civil Twilight 6:07 AM 8:04 PM
        4. Nautical Twilight 5:33 AM 8:37PM
        5. Astronomical Twilight 4:59 AM 9:11 PM
        1. Length of Visible Light 13h 57m
        2. Length of Day 13h 1m
        3. Tomorrow will be 2 minutes 34 seconds shorter
        1. Moon 10:12 PM 12:38 PM
        2. Waning Gibbous64% of the Moon is Illuminated
        Sep 4
        Waning Half Last Qtr
        Sep 10
        New Moon
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Precipitation
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