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      Dense Fog Advisory
      until 10:00 AM CDT
      +1 more alert
      Elev 892 ft, 42.040 °N 92.899 °W

      Marshalltown, IA

      Marshalltown Station67°
      Updated: 4:52 AM CDT on September 17, 2026 (GMT -5)
      2 minutes ago
      75°
      65°
      67
      Feels Like 67
      Showers in Vicinity
      N
      4
      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
        Today
        Fri 09/18
        High 75°f
         97% Precip. / 0.03 in
        Areas of dense morning fog. Thunderstorms during the morning will give way to cloudy skies this afternoon. High near 75F. Winds N at 5 to 10 mph. Chance of rain 100%.
        Tonight
        Fri 09/18
        Low 64°f
         87% Precip. / 0.29 in
        Cloudy this evening with showers after midnight. Low 64F. Winds ENE at 5 to 10 mph. Chance of rain 90%.
        Tomorrow
        Sat 09/19
        High 75°f68°f
         87% Precip. / 0.34 in
        Cloudy with rain ending in the afternoon. High around 75F. Winds ESE at 10 to 20 mph. Chance of rain 90%. Rainfall near a quarter of an inch.
        Hourly Forecast
        Now
        66°
        5AM
        99%
        66°
        6AM
        55%
        66°
        6:54AM
        Sunrise
        7AM
        66°
        8AM
        16%
        67°
        9AM
        69°
        10AM
        70°
        11AM
        72°
        12PM
        73°
        1PM
        74°
        2PM
        74°
        3PM
        74°
        4PM
        75°
        5PM
        74°
        6PM
        73°
        7PM
        72°
        7:17PM
        Sunset
        8PM
        69°
        9PM
        68°
        10PM
        67°
        11PM
        67°
        12AM
        66°
        1AM
        66°
        2AM
        66°
        3AM
        66°
        4AM
        39%
        66°
        Precipitation
        99%
        Storms likely to end around 6:30 AM
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        62
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.16 in
        2. Visibility 6 miles
        3. Clouds Cloudy
        4. Dew Point66°F
        5. Humidity 100%
        6. Rainfall 0.15 in
        7. Snow Depth 0 in
         KMIW Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 75°F 75°F 95°F 1927
        4. Low 65°F 50°F 31°F 1894
        5. Rain/Snow Depth
        6. Precipitation 0.32 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 75°F 75°F 93°F
        4. Low 65°F 50°F 30°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:53 AM 7:17 PM
        3. Civil Twilight 6:25 AM 7:45 PM
        4. Nautical Twilight 5:52 AM 8:18PM
        5. Astronomical Twilight 5:19 AM 8:52 PM
        1. Length of Visible Light 13h 19m
        2. Length of Day 12h 23m
        3. Tomorrow will be 2 minutes 48 seconds shorter
        1. Moon 2:01 PM 10:32 PM
        2. Waxing Crescent40% 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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