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      Elev 994 ft, 41.706 °N 92.770 °W

      Grinnell, IA

      West Westfield Station67°
      Updated: 12:47 AM CDT on September 20, 2026 (GMT -5)
      1 minute ago
      74°
      69°
      67
      Feels Like 67
      Thunderstorm
      N
      10
      Gusts 16 mph
      Lower 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
        Sun 09/20
        Low 62°f
         100% Precip. / 0.62 in
        Thunderstorms likely. Potential for severe thunderstorms. Low 62F. Winds N at 10 to 15 mph. Chance of rain 100%.
        Tomorrow
        Mon 09/21
        High 65°f
         64% Precip. / 0.09 in
        Occasional light rain tapering to a few showers late. High near 65F. Winds NE at 10 to 20 mph. Chance of rain 60%.
        Tomorrow night
        Mon 09/21
        Low 56°f
         54% Precip. / 0.16 in
        Cloudy with showers. Low 56F. Winds ENE at 10 to 15 mph. Chance of rain 50%.
        Hourly Forecast
        Now
        67°
        1AM
        100%
        67°
        2AM
        91%
        66°
        3AM
        48%
        66°
        4AM
        66°
        5AM
        79%
        66°
        6AM
        74%
        65°
        6:56AM
        Sunrise
        7AM
        54%
        64°
        8AM
        64%
        63°
        9AM
        64%
        63°
        10AM
        59%
        62°
        11AM
        60%
        62°
        12PM
        43%
        62°
        1PM
        30%
        62°
        2PM
        63°
        3PM
        63°
        4PM
        63°
        5PM
        62°
        6PM
        33%
        62°
        7PM
        36%
        61°
        7:11PM
        Sunset
        8PM
        35%
        61°
        9PM
        60°
        10PM
        33%
        59°
        11PM
        33%
        59°
        12AM
        38%
        59°
        Precipitation
        100%
        Thunderstorms likely to continue
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        63
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.86 in
        2. Visibility 2 miles
        3. Clouds Cloudy
        4. Dew Point66°F
        5. Humidity 96%
        6. Rainfall 0.98 in
        7. Snow Depth 0 in
         KGGI Station History
        Almanac for September 20, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 74°F 74°F 93°F 1931
        4. Low 69°F 49°F 27°F 1991
        5. Rain/Snow Depth
        6. Precipitation 0.62 in 3.1 in -
        7. Snow 0 in 0 in -
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 79°F 74°F 95°F
        4. Low 69°F 48°F 27°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 5:56 AM 8:11PM
        5. Astronomical Twilight 5:22 AM 8:45 PM
        1. Length of Visible Light 13h 10m
        2. Length of Day 12h 14m
        3. Tomorrow will be 2 minutes 46 seconds shorter
        1. Moon 4:20 PM 12:21 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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