Historical weather data, all-time temperature records, and monthly climate averages for Spencer, IA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Spencer sits in that classic late-winter-meets-spring no-man's-land — expect a high around 54° and a low near 31°, with only a 23% chance of rain and almost no snow risk. But the date's history shows real range: it's hit 88° (1991) and plunged to 12° (1920), so don't put the jacket away just yet.
Spencer doesn't mess around at the extremes — this is a place that has cooked at 113° in July 1936 and frozen at -38° in January 1912, a swing of 151 degrees. That kind of range is a signature of northwest Iowa's continental climate, where the seasons don't transition so much as collide.
Summer is the sweet spot for visitors, with highs in the mid-80s from mid-July through August and the wettest stretch arriving in mid-June. Winters are serious — January averages just 26° for a high — so plan accordingly if you're heading there between December and February.