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      Flood Watch
      until 1:00 AM CDT
      Elev 328 ft, 42.357 °N 92.776 °W

      Grundy Center, IA

      Grundy Center Station70°
      Updated: 11:18 AM CDT on September 29, 2026 (GMT -5)
      5 minutes ago
      73°
      54°
      70
      Feels Like 70
      Sunny
      N
      11
      Gusts 19 mph
      Similar temperature is expected today
      Wundermap
      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
        Today
        Tue 09/29
        High 73°f
         100% Precip. / 0.24 in
        A mix of clouds and sun this morning followed by some light rain this afternoon. High 73F. Winds S at 10 to 15 mph. Chance of rain 100%.
        Tonight
        Tue 09/29
        Low 64°f
         81% Precip. / 0.27 in
        Rain. Low 64F. Winds SSW at 5 to 10 mph. Chance of rain 80%. Rainfall near a quarter of an inch. Locally heavy rainfall possible.
        Tomorrow
        Wed 09/30
        High 70°f63°f
         62% Precip. / 0.23 in
        Overcast with rain showers at times. High around 70F. Winds SSW at 5 to 10 mph. Chance of rain 60%.
        Hourly Forecast
        Now
        70°
        12PM
        71°
        1PM
        71°
        2PM
        73°
        3PM
        71°
        4PM
        76%
        70°
        5PM
        100%
        69°
        6PM
        62%
        68°
        6:55PM
        Sunset
        7PM
        52%
        67°
        8PM
        48%
        66°
        9PM
        52%
        66°
        10PM
        68%
        65°
        11PM
        64%
        65°
        12AM
        69%
        65°
        1AM
        82%
        65°
        2AM
        72%
        66°
        3AM
        58%
        66°
        4AM
        40%
        66°
        5AM
        31%
        66°
        6AM
        66°
        7AM
        66°
        7:06AM
        Sunrise
        8AM
        66°
        9AM
        67°
        10AM
        68°
        11AM
        35%
        69°
        Precipitation
        100%
        Rain possible after 4 PM
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        56
        Moderate
        UV Index
        4
        Moderate
        Additional Conditions
        1. Pressure 29.91 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point51°F
        5. Humidity 52%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KMIW Station History
        Almanac for September 29, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 73°F 71°F 90°F 1953
        4. Low 54°F 45°F 26°F 1984
        5. Rain/Snow Depth
        6. Precipitation 0.5 in 2.9 in -
        7. Snow 0 in 0 in -
        Almanac for September 30, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 70°F 70°F 91°F
        4. Low 64°F 45°F 20°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:06 AM 6:55 PM
        3. Civil Twilight 6:38 AM 7:23 PM
        4. Nautical Twilight 6:05 AM 7:56PM
        5. Astronomical Twilight 5:32 AM 8:29 PM
        1. Length of Visible Light 12h 45m
        2. Length of Day 11h 49m
        3. Tomorrow will be 2 minutes 50 seconds shorter
        1. Moon 8:12 PM 10:41 AM
        2. Waning Gibbous86% of the Moon is Illuminated
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 25
        Full Moon
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