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      Heat Advisory
      until 8:00 PM EDT
      Elev 531 ft, 39.898 °N 76.878 °W

      Spring Grove, PA

      Spring Grove Station71°
      Updated: 2:31 AM EDT on September 3, 2026 (GMT -4)
      6 minutes ago
      79°
      68°
      71
      Feels Like 73
      Cloudy
      N
      5
      Higher 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
        Wed 09/02
        Low 70°f
         48% Precip. / 0.05 in
        Variable clouds with scattered thunderstorms. Gusty winds and small hail are possible. Low near 70F. Winds light and variable. Chance of rain 50%.
        Tomorrow
        Thu 09/03
        High 88°f
         76% Precip. / 0.08 in
        Showers and a possible thunderstorm in the morning will give way to partly cloudy skies late. High 88F. Winds WSW at 5 to 10 mph. Chance of rain 80%.
        Tomorrow night
        Thu 09/03
        Low 69°f
         20% Precip. / 0 in
        Partly cloudy in the evening with more clouds for later at night. Low 69F. Winds light and variable.
        Hourly Forecast
        Now
        72°
        3AM
        72°
        4AM
        48%
        71°
        5AM
        71°
        6AM
        71°
        6:37AM
        Sunrise
        7AM
        34%
        71°
        8AM
        76%
        72°
        9AM
        74°
        10AM
        78°
        11AM
        81°
        12PM
        84°
        1PM
        85°
        2PM
        86°
        3PM
        87°
        4PM
        87°
        5PM
        87°
        6PM
        85°
        7PM
        82°
        7:35PM
        Sunset
        8PM
        79°
        9PM
        78°
        10PM
        76°
        11PM
        75°
        12AM
        73°
        1AM
        72°
        2AM
        72°
        Precipitation
        76%
        Thunderstorms possible around 4:00 AM
        Pollen
        Grass Pollen
        Low
        Air Quality
        60
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.99 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point69°F
        5. Humidity 91%
        6. Rainfall 0.69 in
        7. Snow Depth 0 in
         KTHV Station History
        Almanac for September 3, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 79°F 84°F 103°F 1953
        4. Low 68°F 59°F 41°F 1916
        5. Rain/Snow Depth
        6. Precipitation 0.05 in 3.6 in -
        7. Snow 0 in 0 in -
        Almanac for September 4, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 87°F 84°F 99°F
        4. Low 68°F 58°F 41°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:37 AM 7:35 PM
        3. Civil Twilight 6:09 AM 8:03 PM
        4. Nautical Twilight 5:36 AM 8:35PM
        5. Astronomical Twilight 5:02 AM 9:09 PM
        1. Length of Visible Light 13h 53m
        2. Length of Day 12h 58m
        3. Tomorrow will be 2 minutes 32 seconds shorter
        1. Moon 11:00 PM 1:53 PM
        2. Waning Gibbous52% 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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