National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Partly Cloudy

87°F

31°C

Humidity 55%
Wind Speed S 5 G 17 mph
Barometer 29.87 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 16 Jun 5:55 pm CDT
Extended Forecast for

Guernsey IA

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 68. South wind around 7 mph.

    Low: 68 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 86. Southwest wind 6 to 8 mph becoming west northwest in the morning. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 65. North northeast wind 5 to 7 mph becoming southwest in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 81. East northeast wind 8 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. Northwest wind 6 to 10 mph.

    Low: 60 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 89. Breezy.

    High: 89 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Breezy.

    Low: 74 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 68. South wind around 7 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 86. Southwest wind 6 to 8 mph becoming west northwest in the morning. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 65. North northeast wind 5 to 7 mph becoming southwest in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 81. East northeast wind 8 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Mostly clear, with a low around 60. Northwest wind 6 to 10 mph.
Juneteenth
Sunny, with a high near 85.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 65.
Friday
Sunny, with a high near 89. Breezy.
Friday Night
Mostly clear, with a low around 74. Breezy.
Saturday
Sunny, with a high near 94. Breezy.
Saturday Night
Clear, with a low around 75.
Sunday
Sunny, with a high near 94. Breezy.
Sunday Night
Mostly clear, with a low around 73. Breezy.
Monday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 91. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Guernsey IA
 41.66°N 92.34°W
Last Update:
5:28 pm CDT Jun 16, 2025
Forecast Valid:
6pm CDT Jun 16, 2025-6pm CDT Jun 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation