Owatonna (MN) Temperature by Month

Owatonna, Minnesota, United States of America has an average annual maximum temperature of 13°C (55°F), ranging from -5°C (23°F) in January to 28°C (82°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

In Owatonna, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 17°C (63°F) in July to -15°C (5°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Owatonna by month:

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 342 hours of sunshine.

The chart below shows the average temperature throughout the year:

Owatonna's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Owatonna's weather, including monthly rainfall, sunshine hours, and humidity, visit our Owatonna climate page.