Climate Insights for Owatonna

The climate in Owatonna is cool. The average annual temperature is 8°C and approximately 979mm of precipitation falls per year. Owatonna receives a notable amount of rainfall throughout the year, including during its driest month. Owatonna is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are February, January, December, when temperatures can drop to -11°C. Snowfall occurs from January to December, with around 95cm accumulating over the season.

Owatonna has a wide annual temperature range, spanning 39°C from the coldest to warmest months. The warmest month is July, when average highs reach 28°C and the mean temperature sits around 23°C. The coldest month is February, when overnight lows fall to -11°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 9°C shift in average temperatures.

Owatonna is a moderately rainy area, receiving approximately 979mm of precipitation annually, which averages out to around 82mm per month. The wettest month is May, averaging 132mm of rainfall. June and August also tend to see above-average precipitation. The driest month is January, with just 33mm. That's 99mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 95cm accumulating over the season. January typically sees the most snow at around 21cm.

Owatonna is moderately windy, with an average annual wind speed of 23km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 26km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 7km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 23km/h in winter, 24km/h in spring, 20km/h in summer, 23km/h in autumn.

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It is currently spring in Owatonna, which began on March 20, 2026. Owatonna is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 28°C, while the coldest stretch bottoms out in February near -11°C. Summer is next, beginning on June 21, 2026 — 51 days from now.

The best time to visit Owatonna is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 94mm per month. By contrast, February can be quite cold with temperatures dropping to -11°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Owatonna based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.