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      Elev 371 ft, 40.045 °N 75.361 °W

      Radnor, PA

      Radnor Station Station78°
      Updated: 5:39 PM EDT on September 16, 2026 (GMT -4)
      3 minutes ago
      83°
      58°
      78
      Feels Like 79
      Sunny
      N
      8
      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
        Wed 09/16
        Low 68°f
         9% Precip. / 0 in
        Partly to mostly cloudy. Low 68F. Winds SSW at 5 to 10 mph.
        Tomorrow
        Thu 09/17
        High 85°f
         15% Precip. / 0 in
        Considerable cloudiness. Slight chance of a rain shower. High around 85F. Winds SSW at 5 to 10 mph.
        Tomorrow night
        Thu 09/17
        Low 69°f
         45% Precip. / 0.03 in
        Showers in the evening with some clearing overnight. Low 69F. Winds WSW at 5 to 10 mph. Chance of rain 50%.
        Hourly Forecast
        Now
        79°
        6PM
        79°
        7PM
        77°
        7:08PM
        Sunset
        8PM
        74°
        9PM
        73°
        10PM
        72°
        11PM
        71°
        12AM
        71°
        1AM
        71°
        2AM
        70°
        3AM
        70°
        4AM
        70°
        5AM
        69°
        6AM
        69°
        6:44AM
        Sunrise
        7AM
        69°
        8AM
        70°
        9AM
        73°
        10AM
        74°
        11AM
        76°
        12PM
        78°
        1PM
        80°
        2PM
        81°
        3PM
        82°
        4PM
        83°
        5PM
        83°
        Precipitation
        15%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        32
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.27 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point63°F
        5. Humidity 58%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KLOM Station History
        Almanac for September 16, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 83°F 80°F 93°F 2008
        4. Low 58°F 58°F 36°F 2000
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 85°F 80°F 92°F
        4. Low 58°F 57°F 43°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:43 AM 7:08 PM
        3. Civil Twilight 6:16 AM 7:35 PM
        4. Nautical Twilight 5:44 AM 8:07PM
        5. Astronomical Twilight 5:11 AM 8:40 PM
        1. Length of Visible Light 13h 19m
        2. Length of Day 12h 24m
        3. Tomorrow will be 2 minutes 36 seconds shorter
        1. Moon 12:39 PM 9:45 PM
        2. Waxing Crescent29% 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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