Hazardous Weather Conditions
Current conditions at
Grinnell Municipal Airfield (KGGI)
Lat: 41.71°NLon: 92.73°WElev: 1007ft.
Fog/Mist
36°F
2°C
| Humidity | 87% |
| Wind Speed | Calm |
| Barometer | 30.15 in |
| Dewpoint | 32°F (0°C) |
| Visibility | 5.00 mi |
| Last update | 4 Mar 5:15 am CST |
Extended Forecast for
Sully IA
Today

High: 51 °F
Mostly Cloudy
Tonight

Low: 39 °F
Chance
Drizzle and
Patchy FogThursday
High: 61 °F
Chance
Drizzle and
Patchy Fog
then Mostly
SunnyThursday Night
Low: 47 °F
Partly Cloudy
then Showers
LikelyFriday

High: 69 °F
Showers and
BreezyFriday Night
Low: 35 °F
Showers then
Chance RainSaturday

High: 50 °F
Sunny
Saturday Night

Low: 35 °F
Clear
Sunday

High: 62 °F
Sunny and
Breezy
Detailed Forecast
Today
Mostly cloudy, with a high near 51. East northeast wind around 6 mph becoming calm in the afternoon.
Tonight
A chance of drizzle, mainly after 11pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 39. Calm wind.
Thursday
A chance of drizzle, mainly before 7am. Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 61. Calm wind becoming south southeast around 6 mph in the afternoon.
Thursday Night
Showers likely and possibly a thunderstorm after midnight. Increasing clouds, with a low around 47. Southeast wind 6 to 13 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
Showers and possibly a thunderstorm before noon, then rain likely between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. High near 69. Breezy, with a south southwest wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm before midnight, then a chance of rain after midnight. Low around 35. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Sunny, with a high near 50.
Saturday Night
Clear, with a low around 35.
Sunday
Sunny, with a high near 62. Breezy.
Sunday Night
Clear, with a low around 43.
Monday
Sunny, with a high near 71. Breezy.
Monday Night
A 30 percent chance of rain. Mostly clear, with a low around 50.
Tuesday
A 50 percent chance of rain. Partly sunny, with a high near 65. Breezy.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Sully IA
41.58°N 92.84°W
41.58°N 92.84°W
4:51 am CST Mar 4, 2026
5am CST Mar 4, 2026-6pm CDT Mar 10, 2026



