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      Elev 328 ft, 42.357 °N 92.776 °W

      Grundy Center, IA

      Grundy Center Station64°
      Updated: 4:43 PM CDT on September 20, 2026 (GMT -5)
      32 seconds ago
      66°
      57°
      64
      Feels Like 64
      Cloudy
      N
      14
      Gusts 26 mph
      Lower 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
        Mon 09/21
        Low 54°f
         73% Precip. / 0.13 in
        Cloudy skies with periods of rain late. Low 54F. Winds ENE at 10 to 20 mph. Chance of rain 70%.
        Tomorrow
        Tue 09/22
        High 58°f
         65% Precip. / 0.24 in
        Rain showers in the morning with numerous thunderstorms developing in the afternoon. High 58F. Winds ENE at 10 to 15 mph. Chance of rain 70%.
        Tomorrow night
        Tue 09/22
        Low 51°f
         71% Precip. / 0.49 in
        Rain early...then remaining cloudy with showers late. Low 51F. Winds ENE at 5 to 10 mph. Chance of rain 70%. Rainfall around a half an inch.
        Hourly Forecast
        Now
        64°
        5PM
        64°
        6PM
        63°
        7PM
        62°
        7:11PM
        Sunset
        8PM
        61°
        9PM
        61°
        10PM
        60°
        11PM
        59°
        12AM
        59°
        1AM
        62%
        58°
        2AM
        70%
        58°
        3AM
        73%
        57°
        4AM
        57%
        57°
        5AM
        64%
        56°
        6AM
        71%
        55°
        6:57AM
        Sunrise
        7AM
        55%
        55°
        8AM
        66%
        55°
        9AM
        56%
        55°
        10AM
        59%
        55°
        11AM
        37%
        56°
        12PM
        34%
        56°
        1PM
        59%
        57°
        2PM
        51%
        57°
        3PM
        38%
        57°
        4PM
        52%
        58°
        Precipitation
        73%
        Pollen
        None
        Air Quality
        19
        Good
        UV Index
        1
        Low
        Additional Conditions
        1. Pressure 30.03 in
        2. Visibility 8 miles
        3. Clouds Cloudy
        4. Dew Point57°F
        5. Humidity 79%
        6. Rainfall 0.11 in
        7. Snow Depth 0 in
         KMIW Station History
        Almanac for September 20, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 66°F 74°F 93°F 1925
        4. Low 57°F 49°F 29°F 1991
        5. Rain/Snow Depth
        6. Precipitation 0.13 in 3.1 in -
        7. Snow 0 in 0 in -
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 59°F 74°F 93°F
        4. Low 57°F 48°F 28°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:56 AM 7:11 PM
        3. Civil Twilight 6:28 AM 7:39 PM
        4. Nautical Twilight 5:55 AM 8:12PM
        5. Astronomical Twilight 5:21 AM 8:46 PM
        1. Length of Visible Light 13h 11m
        2. Length of Day 12h 15m
        3. Tomorrow will be 2 minutes 49 seconds shorter
        1. Moon 4:23 PM 12:18 AM
        2. Waxing Gibbous68% of the Moon is Illuminated
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Precipitation
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