Grinnell (IA) Weather and Climate: A Comprehensive Guide
The climate in Grinnell is marked by big temperature swings throughout the year.
Temperatures range from warm during the warmest months
to very cold in the cooler months.
It also has a notably wet climate with much precipitation.
Let's now guide you through the climate details for a complete overview.
Average maximum day and minimum night temperature
In Grinnell, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 29°C in July, the warmest time of the year, to a very cold -2°C during cooler months like January.
At night, temperatures typically drop to an average of around -12°C during these months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Grinnell experiences significant rain/snowfall throughout the year, averaging 1041 mm of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, June receives high rainfall, averaging 158 mm of precipitation, recorded across 13 rainy days. In contrast, the drier season, January brings less snowfall, with 22 mm over 7 snowy days. For more details, please visit our Grinnell Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
overcast and heavy rain partly cloudy and no rain overcast and no rainForecast for Grinnell (IA)
3 m/s
3 m/s
3 m/s
The best time of year to visit Grinnell in the United States of America
During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
The hottest season / summer takes place in June, July, August and September.
The coldest season / winter is in the following months: January, February and December.
July has an average maximum temperature of 29°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of -2°C.
June tops the wettest month list with 158 mm of rainfall.
January is the driest month with 22 mm of precipitation.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
