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

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Overcast

42°F

6°C

Humidity 78%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 4 Mar 8:15 pm CST
Extended Forecast for

Tama IA

  • Tonight

    Tonight: A chance of sprinkles before 2am, then a slight chance of rain between 2am and 5am, then a chance of sprinkles after 5am. Patchy fog after 1am. Otherwise, cloudy, with a low around 40. Calm wind. Chance of precipitation is 20%.

    Low: 40 °F

    Cloudy then
    Slight Chance
    Rain and
    Patchy Fog

  • Thursday

    Thursday: A chance of sprinkles before 7am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 55. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 55 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Patchy fog after 5am. Otherwise, increasing clouds, with a low around 44. Southeast wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Mostly Cloudy
    then Showers
    Likely and
    Patchy Fog

  • Friday

    Friday: Rain and possibly a thunderstorm. High near 69. South wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 69 °F

    Rain then
    Rain Likely

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm before midnight, then a chance of rain. Low around 35. South wind 11 to 14 mph becoming west northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 32.

    Low: 32 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Breezy.

    High: 60 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

Detailed Forecast

Tonight
A chance of sprinkles before 2am, then a slight chance of rain between 2am and 5am, then a chance of sprinkles after 5am. Patchy fog after 1am. Otherwise, cloudy, with a low around 40. Calm wind. Chance of precipitation is 20%.
Thursday
A chance of sprinkles before 7am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 55. Calm wind becoming east southeast around 6 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Patchy fog after 5am. Otherwise, increasing clouds, with a low around 44. Southeast wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Rain and possibly a thunderstorm. High near 69. South wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Rain and possibly a thunderstorm before midnight, then a chance of rain. Low around 35. South wind 11 to 14 mph becoming west northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
Clear, with a low around 32.
Sunday
Sunny, with a high near 60. Breezy.
Sunday Night
Clear, with a low around 43.
Monday
Sunny, with a high near 69.
Monday Night
A 30 percent chance of rain. Mostly clear, with a low around 44.
Tuesday
Rain likely. Partly sunny, with a high near 59. Breezy. Chance of precipitation is 60%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of snow. Partly sunny, with a high near 37. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Tama IA
 41.97°N 92.57°W
Last Update:
8:17 pm CST Mar 4, 2026
Forecast Valid:
8pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation