Hazardous Weather Conditions
Current conditions at
Grinnell Municipal Airfield (KGGI)
Lat: 41.71°NLon: 92.73°WElev: 1007ft.
Fair
73°F
23°C
| Humidity | 67% |
| Wind Speed | SE 17 G 25 mph |
| Barometer | 29.89 in |
| Dewpoint | 61°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 14 Sep 6:15 pm CDT |
Extended Forecast for
Guernsey IA
Flood Watch September 14, 06:23pm until September 16, 01:00pm
NOW until 1:00pm Wed
Flood Watch
Tonight
Low: 67 °F
Chance
T-storms and
Breezy then
Heavy RainTuesday
High: 72 °F
Showers then
Chance
ShowersTuesday Night
Low: 59 °F
Mostly Cloudy
then Chance
ShowersWednesday
High: 73 °F
Showers
Wednesday Night
Low: 63 °F
Chance
T-storms then
ShowersThursday
High: 81 °F
Showers
LikelyThursday Night
Low: 65 °F
Chance
ShowersFriday
High: 83 °F
Chance
T-storms
Detailed Forecast
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Some of the storms could produce heavy rainfall. Low around 67. Breezy, with a south southeast wind 8 to 17 mph becoming west southwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Tuesday
Showers and thunderstorms before 1pm, then a chance of showers. High near 72. Southwest wind around 6 mph becoming north in the morning. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
A chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 59. Calm wind becoming north northeast around 5 mph after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 73. East northeast wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 63. Light east wind. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Friday Night
A 50 percent chance of showers. Partly cloudy, with a low around 67.
Saturday
A 50 percent chance of showers. Mostly sunny, with a high near 81.
Saturday Night
A 50 percent chance of showers. Partly cloudy, with a low around 62.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 75.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 58.
Monday
Partly sunny, with a high near 72.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Guernsey IA
41.66°N 92.34°W
41.66°N 92.34°W
4:57 pm CDT Sep 14, 2026
6pm CDT Sep 14, 2026-6pm CDT Sep 21, 2026
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