Climate Insights for Owatonna

The climate in Owatonna is cool. The average annual temperature is 8°C and approximately 995mm 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 January, February, December, when temperatures can drop to -11°C. Snowfall occurs from January to December, with around 132cm 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 January, when overnight lows fall to -11°C and the daily average is -8°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 995mm of precipitation annually, which averages out to around 83mm per month. The wettest month is June, averaging 131mm of rainfall. May and August also tend to see above-average precipitation. The driest month is January, with just 33mm. That's 98mm less than June, 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 132cm accumulating over the season. January typically sees the most snow at around 29cm.

Owatonna is mildly breezy, with an average annual wind speed of 15km/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 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap 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 16km/h in winter, 16km/h in spring, 13km/h in summer, 16km/h in autumn.

It is currently summer in Owatonna, which began on June 21, 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 January near -11°C. Autumn is next, beginning on September 23, 2026 (8 days from now).

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.