Current conditions at
Grinnell Municipal Airfield (KGGI)
Lat: 41.71°NLon: 92.73°WElev: 1007ft.
Fair
59°F
15°C
| Humidity | 36% |
| Wind Speed | Calm |
| Barometer | 29.92 in |
| Dewpoint | 32°F (0°C) |
| Visibility | 10.00 mi |
| Last update | 29 Mar 7:35 pm CDT |
Extended Forecast for
3 Miles NNW Hartwick IA
Tonight

Low: 45 °F
Mostly Clear
Monday

High: 83 °F
Sunny
Monday Night
Low: 56 °F
Chance
T-storms then
Rain LikelyTuesday
High: 75 °F
Chance Rain
and Breezy
then Chance
T-storms and
WindyTuesday Night

Low: 35 °F
Chance
Showers and
BreezyWednesday
High: 46 °F
Mostly Cloudy
then Chance
ShowersWednesday Night

Low: 31 °F
Rain/Snow and
BlusteryThursday

High: 46 °F
Rain/Snow
Likely and
BreezyThursday Night

Low: 32 °F
Chance Rain
Detailed Forecast
Tonight
Mostly clear, with a low around 45. South wind 5 to 10 mph.
Monday
Sunny, with a high near 83. Light south wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
A chance of rain and thunderstorms before 1am, then rain likely and possibly a thunderstorm between 1am and 4am, then rain likely after 4am. Mostly cloudy, with a low around 56. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of rain before 1pm, then a chance of rain and thunderstorms between 1pm and 4pm, then a chance of rain after 4pm. Partly sunny, with a high near 75. Windy, with a south southwest wind 14 to 22 mph becoming north northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 35. Breezy, with a north wind 13 to 20 mph, with gusts as high as 32 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 46. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain and snow. Low around 31. Blustery. Chance of precipitation is 80%.
Thursday
Rain and snow likely, becoming all rain after 1pm. Mostly cloudy, with a high near 46. Breezy. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 32.
Friday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 58.
Friday Night
Rain likely. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Saturday
Rain likely. Mostly cloudy, with a high near 57. Breezy. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 34. Breezy.
Sunday
Mostly sunny, with a high near 51. Breezy.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles NNW Hartwick IA
41.81°N 92.37°W
41.81°N 92.37°W
6:12 pm CDT Mar 29, 2026
7pm CDT Mar 29, 2026-6pm CDT Apr 5, 2026


