Historical weather data, all-time temperature records, and monthly climate averages for Owatonna, MN. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Owatonna runs the full gamut — the date has seen a balmy 73° as recently as 2016, and a brutal 3° low just two years later in 2018. On average, expect a cool spring day in the upper 40s with a 31% chance of rain and a small but real 8% chance of snow still in the mix.
Owatonna earns its Minnesota stripes with a 137-degree swing between its all-time records: a scorching 102° in June 1985 and a bone-chilling -35° in January 1977. The extremes don't stop there — a single August day in 2007 dumped 6.47 inches of rain, and May 2013 buried the area under 15 inches of snow.
Summer is the clear sweet spot, with highs peaking around 83–84° in mid-July before a steady autumn slide back toward freezing. Winters are genuinely cold — January averages just 23° for a high — so plan accordingly. If you're watching for rain, mid-June is the wettest stretch of the year, averaging 1.5 inches in a single week.