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September 18th, 2025 :: 7:50 pm CDT   

Local Weather Report for
Grinnell
Iowa, United States

 Current Grinnell Weather Conditions Updated September 18th at 6:55 pm 
Temperature:20°C Dew Point:19°C
Barometer:101.6 kPa Wind:calm
Humidity:94.0% Visibility:0 Km
 
 Grinnell Weather Forecast Summary  
 
Today
Sep 18th
Friday
Sep 19th
Saturday
Sep 20th
Sunday
Sep 21st
Monday
Sep 22nd
Thundershowers Cloudy Cloudy Thundershowers Thundershowers
29°C
26°C
16°C
29°C
17°C
23°C
17°C
24°C
18°C
 
 Grinnell Detailed Weather Forecast  
 
Thursday, September 18th, 2025
Evening Temperature: 18°C
Cloudy with a few showers.
Friday, September 19th, 2025
Overnight Temperature: 16°C
Cloudy.
Morning Temperature: 22°C
A mix of sun and cloud. Slight chance of a thunderstorm.
Afternoon Temperature: 25°C
A mix of cloud and sun with a chance of showers or thundershowers.
Evening Temperature: 17°C
Cloudy.
Saturday, September 20th, 2025
Overnight Temperature: 18°C
Cloudy.
Morning Temperature: 22°C
Cloudy with sunny periods with a chance of showers.
Afternoon Temperature: 26°C
Cloudy. Windy at times.
Evening Temperature: 19°C
Cloudy with a chance of showers.
Sunday, September 21st, 2025
Overnight Temperature: 17°C
Cloudy with showers likely.
Morning Temperature: 20°C
Cloudy with rain. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 22°C
Cloudy with a chance of showers or thundershowers.
Evening Temperature: 19°C
Cloudy with showers likely. Chance of a thunderstorm.
Monday, September 22nd, 2025
Overnight Temperature: 18°C
Cloudy with a slight chance of showers. Windy at times.
Morning Temperature: 22°C
Cloudy with a chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 22°C
Cloudy with a few showers. Chance of a thunderstorm. Windy at times.
Evening Temperature: 19°C
Clear with showers likely. Chance of a thunderstorm.
Tuesday, September 23rd, 2025
Overnight Temperature: 17°C
Clear with cloudy periods. Slight chance of a thunderstorm.
Morning Temperature: 20°C
Cloudy with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 17°C
Cloudy with showers likely. Windy at times.
Evening Temperature: 14°C
Cloudy with showers likely.
Wednesday, September 24th, 2025
Overnight Temperature: 12°C
Clear with cloudy periods.
Morning Temperature: 18°C
Cloudy with a slight chance of showers or thundershowers.
Afternoon Temperature: 18°C
Mostly cloudy with showers likely.
Evening Temperature: 13°C
Cloudy with showers likely.
Thursday, September 25th, 2025
Overnight Temperature: 14°C
Cloudy with periods of rain. Windy at times.
Morning Temperature: 16°C
Cloudy with a chance of showers. Windy at times.
Afternoon Temperature: 16°C
Cloudy with sunny periods with a chance of showers. Windy at times.
Evening Temperature: 12°C
Clear.
Friday, September 26th, 2025
Overnight Temperature: 11°C
Clear with cloudy periods.
Morning Temperature: 18°C
Sunny.
Afternoon Temperature: 20°C
Sunny with cloudy periods.
Evening Temperature: 15°C
Clear.





 

  [ Local Weather Report ]
Westfield, IA 
6:55 PM  20°C
 
 
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6:55 PM  21°C
Mostly Clear
 
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Pella, IA 
6:55 PM  21°C
Overcast
 
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This WeatherCity Weather Forecast for Grinnell, Iowa, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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