Historical weather data, all-time temperature records, and monthly climate averages for Indianola, IA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Indianola tends to feel more like early spring than anything else — expect a high around 57° and a low dipping to 34°. The date has a wild range in the history books, from a balmy 82° back in 1991 to a bitter 13° as recently as 2018. Rain is a modest possibility at 25%, but snow is nearly off the table at just 2%.
Indianola has seen some genuine extremes over its 130+ years of records — a scorching 113° in August 1934 and a brutal -35° in February 1996 represent nearly 150 degrees of temperature swing. A single August day in 1977 dropped 8.9 inches of rain, and New Year's Day 1942 buried the area under 19 inches of snow.
Summer is the clear headliner, with the warmest week of the year running July 16–22 and average highs peaking at 87–88°. Winters are genuinely cold — early January averages just 31° for a high. If you're watching for rain, mid-June is the wettest stretch of the year, averaging 1.2 inches in a single week.